JPH05150784A - Assigner for electronic musical instrument - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To provide an assigner that can rationally select a tone generation channel and an effect addition channel to be assigned to input performance information from a keyboard or the like in an electronic musical instrument that generates a tone with an effect added. . [Structure] A tone generation channel evaluation means for calculating an evaluation amount for channel selection based on the state of the tone generation channel 26, and a channel selection means for selecting a channel based on the evaluation amount of each channel calculated here. And an effect of calculating an evaluation amount for channel selection for each channel based on the state of the effect addition channel, and an effect of selecting a channel based on the evaluation amount of each effect addition channel calculated by this evaluation device An additional channel selection means is provided, and the tone generation channel selected by the tone generation channel selection means and the effect addition channel selected by the effect addition channel selection means are connected by the tone signal exchange device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument for producing musical sounds to which effects such as reverb (reverberation), chorus, pitch shift, phasor, and equalizer are added. The present invention relates to an assigner for selecting a tone generation channel and an effect addition channel assigned to performance information.

[0002]

2. Description of the Related Art Generally, an electronic musical instrument has a plurality of musical tone generating channels, and when musical tone information is input from a keyboard or the like,
One of the plurality of tone generation channels is selected in accordance with a predetermined rule, and the input tone information is assigned to the selected tone generation channel to generate a tone signal to be produced by a speaker or the like. There are various selection methods, for example, selection from an empty channel, selection in the order of key depression (history assign method), selection in the order of key release (history assignment method), and selection in the order of smaller sound volume of the tone generation channel ( Level assignment method),
Methods such as are known.

Further, in order to add an effect such as reverb to the generated musical sound, an effect adding channel for adding an effect such as reverb to the musical tone signal generated in the musical tone generating channel is provided in addition to the above musical tone generating channel. There is proposed a method of causing a speaker to generate a tone signal to which an effect has been added by this effect addition channel. In this method, a tone signal exchanging device is provided between the tone generating channel and the effect-added channel so that they can be arbitrarily connected and exchanged, and the combination of the connections can be arbitrarily changed according to the states of those channels. There is.

[0004]

Conventionally, there are various known techniques for selecting a tone generation channel for inputted tone information, but an electronic musical instrument of a type in which an effect addition channel and a tone generation channel are connected and exchanged. There is still no way to rationally select the effect-added channel and the tone-generation channel. As a method for selecting these, it is possible to apply the method used to select the tone generation channels in the past as it is, but when the tone generation channels and effect-added channels that are already connected are to be selected, Sometimes it is necessary to consider each other's condition.

For example, if the effect-added channel is selected first among the tone-generating channel and the effect-added channel in the connected state, even if the tone-generating channel that has been connected up to that point is still outputting the tone signal, that tone-sound is generated. Since the signal does not pass through the effect addition channel and is not output to the speaker, the pronunciation of the musical tone signal may suddenly stop, which makes the musical expression unnatural.

Further, when selecting a tone generation channel, it is possible to make a more appropriate selection by considering the effect added to the tone by the effect addition channel connected to it. For example, in the case of the level assign method, the selection is usually made in the order of smaller tone generation amount of the tone generation channel, but the tone generation amount of the tone generation channel itself is smaller, but the tone generation amount of the tone output from the effect addition channel connected to it is greater. If one is selected before the one with a large sound volume of the tone generation channel itself but with a small sound volume of the tone output from the effect-added channel connected to it, the musical sound actually output from the speaker is loud. Since it will be erased first and it will be unnatural in terms of performance expression, it is necessary to select in consideration of such cases.

The present invention has been made in view of such circumstances, and an object thereof is to provide an assigner capable of rationally selecting a tone generation channel and an effect addition channel in an electronic musical instrument capable of adding an effect to a generated tone. To provide.

[0008]

The assigner for an electronic musical instrument according to the present invention is effective for a plurality of musical tone generating channels for generating musical tone signals based on inputted musical tone information and musical tone signals output from the musical tone generating channels. Tone generation channel and effect addition channel used in an electronic musical instrument equipped with a plurality of effect addition channels for adding a tone and a tone signal exchanging device for connecting the selected tone generation channel and the effect addition channel Which is an assigner for selecting the tone generation channel, and the tone generation channel evaluation means for calculating the evaluation amount for selecting the tone generation channel for each tone generation channel based on the state of the tone generation channel and the tone generation channel evaluation means. A tone generation channel selection means for selecting a tone generation channel based on the evaluation amount of each tone generation channel, and Based on the effect addition channel evaluation means for calculating the evaluation amount for selecting the effect addition channel based on the state of the additional channel and the evaluation amount of each effect addition channel calculated by the effect addition channel evaluation means An effect-added channel selecting means for selecting an effect-added channel, wherein the tone-sound generating channel selected by the tone-sound-generating channel selecting means and the effect-adding channel selected by the effect-adding channel selecting means are connected to the tone signal exchanging device. It is configured to connect by.

The above-described effect-added channel selecting means, when the effect-added channel to be selected is already connected to the tone generation channel, the effect-added channel is selected until the connected tone generation channel is selected. Can be configured not to be selected.

Further, the tone generation channel evaluation means described above is
When the effect addition channel is connected to the tone generation channel, the evaluation amount can be calculated by performing the correction corresponding to the effect added by the effect addition channel.

[0011]

The tone generation channel evaluation means calculates an evaluation amount for selecting a tone generation channel for each tone generation channel based on the state of each tone generation channel. For example, when a tone generation channel is selected by the level assign method, the tone generation amount (envelope level, remaining tone generation amount, pseudo envelope level, etc.) of each tone generation channel is used as the evaluation amount. Also, in the case of the history assign method based on the key pressing order, the evaluation amount of each tone generation channel is determined so that the keys can be easily selected in the old order. The tone generation channel selection means selects a tone generation channel based on the evaluation amount of each tone generation channel obtained by the tone generation channel evaluation means.

In this case, the tone generation channel evaluating means may calculate the evaluation amount by performing correction corresponding to the effect added by the effect addition channel when the effect addition channel is connected to the tone generation channel. As a result, for example, in the case of the level assign method, the tone generation amount of the tone generation channel itself is small, but the tone generation amount of the tone output from the effect addition channel connected to it is large, but the tone generation amount of the tone generation channel itself is large, Musical tones output from the connected effect-added channels will not be selected earlier than those with a small sound volume, and unnaturalness in performance expression can be reduced.

The effect-added channel evaluation means calculates an evaluation amount for selecting the effect-added channels on the basis of the state of each effect-added channel. The evaluation amount is, for example, the amount of musical tones already stored in the effect-added channel, the effect-added channel that is output by adding the effect to the input musical sound signal (original sound) itself from the connected tone-generating channel. Of the original sound output signal, a sum of these sounds, or a sound amount of these sounds converted into a delay time is used. The effect-added channel selecting means selects the effect-added channel based on the evaluation amount of each effect-added channel obtained by the effect-added channel evaluation means.

In this case, the effect-added channel selection means is
When the effect addition channel to be selected is already connected to the tone generation channel, it is preferable not to select the effect addition channel until the connected tone generation channel is selected. As a result, the tone generation channel and the effect addition channel that are paired in the connection are selected first, so that the sound generation is stopped while the tone signal from the tone generation channel is still present. It is possible to prevent an unnatural feeling in performance from occurring.

In this way, the tone generation channel selected by the tone generation channel selection means and the effect addition channel selected by the effect addition channel selection means are mutually connected by the tone signal exchange device, and these become a pair. , A tone added to the newly input tone information is generated.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an electronic musical instrument to which an assigner as an embodiment of the present invention is applied. The electronic musical instrument of this embodiment is for a multi-timba electronic musical instrument having a plurality of independent tone color parts. In this multi-timba electronic musical instrument, performance information for a part is transmitted via MIDI channels corresponding to the respective parts. It is designed to be used and supplied.

In FIG. 1, reference numeral 20 is a MIDI circuit for receiving a MIDI signal. The MIDI circuit 20 receives a MIDI message from an external automatic performance device (not shown) through a MIDI bus (not shown) by a known technique, decodes the message to obtain performance information and the like.
Each time the reception of the DI message is completed, a corresponding interrupt is issued to the CPU 22 via the bus 21. For example, when a note-on and / or note-off message is received, a key data reception interrupt is issued. CPU2 in ROM23
Data and tables necessary for each processing are stored in advance together with the program to be executed by No. 2. R
In the AM 24, a working area including various registers necessary for executing a program is set. The timer 25 issues a timer interrupt to the CPU 22 at a predetermined time interval (1 mSec).

The CPU 22 executes a predetermined program, receives performance information and the like in response to an interrupt from the MIDI circuit 20, and writes it in a corresponding register of the RAM 24. The tone generation circuit 26 is controlled by executing a predetermined program based on the written data. The tone generation circuit 26 is controlled by the CPU 22 under the control of the R
The amplifier 2 generates a desired tone signal based on the tone generation parameter transferred from the AM 24, the target value for envelope control, the rate and the effector control parameter.
It is sent to the speaker 28 via 7 to generate a musical sound.

The tone generation circuit 26 comprises 16 tone generation channels, 20 effect addition channels and a tone signal exchange device. The tone generation channel generates a tone based on the tone generation parameter and generates a smooth envelope based on the target value and rate to control the amplitude of the tone. The effect addition channel is composed of an effect addition section and a mute section. The effect adding section adds a sound effect based on the effector control parameter to the musical sound. The mute section controls and outputs the passing amount of the musical tone signal. The tone signal exchanging device connects the tone generation channel and the effect addition channel based on the tone generation channel number and the effect addition channel number as allocation parameters, and transmits the tone generated in the tone generation channel to the effect addition channel. Note that the technique relating to the exchange of the tone generating channel and the effect-added channel in the tone signal exchanging device, which is well known in the field of communication, is applied to the technique relating to the exchange, so that the description thereof will be omitted.

In the tone generation circuit 26, when the tone generation start instruction is received, the tone signal exchanging apparatus causes the tone generation channel number and the effect addition channel corresponding to the tone generation channel number and the effect addition channel as allocation parameters, respectively. After disconnecting the previous connection of, the corresponding tone generation channel and the effect addition channel are connected, the tone generation channel starts generating the tone signal and the envelope, and the mute part of the effect addition channel sets the passage amount to the maximum passage amount. To do.

When the musical tone generation channel is instructed to perform rapid attenuation, the musical tone generation channel attenuates the envelope level at a predetermined rapid attenuation rate, and when the envelope level becomes "0", the musical tone generation circuit 26 is rapidly attenuated. The tone generation channel number is added to the end 1 FIFO.

Upon receiving an instruction for rapid attenuation to the effect-added channel, the mute section generates a rapid attenuation envelope of a predetermined shape, reduces the passing amount according to the rapid attenuation envelope, and finally sets it to "0". To do. When the rapid attenuation envelope level becomes "0", the effect adding section clears the tone signal stored inside the effect adding section. When the time required for clearing elapses, the tone generation circuit 2
The effect addition channel number is added to the rapid attenuation end 2 FIFO provided in 6.

In the present embodiment, it is assumed that the effect added by the effect addition channel is the reverb effect. Due to the addition of the reverb effect, the musical sounds are delayed and output sequentially as time passes. For example, no delay (original sound), 4 mSec delay, 27 mSec delay, ...

As various maps set in a predetermined area of the RAM 24, a MIDI channel map for storing information on MIDI channels, a part map for storing information on parts, and a task management for storing information for task management. There are a map, a tone generation channel management map for managing tone generation channels, an envelope management map for storing information for envelope channel management, an effect addition channel management map for storing information for effect addition channel management, and the like.

First, the outline of the operation of the electronic musical instrument of this embodiment will be described. In the electronic musical instrument of this embodiment, various tasks, that is, a key data receiving task, a main assigner task, a sounding task, a pre-assigner task, an envelope task, and a manipulator data receiving task are managed by the monitor program. It is executed by multi-tasking while performing priority processing between. Here, the monitor program includes a reset routine, an event wait monitor call routine, an event occurrence monitor call routine,
There are a timer interrupt processing routine, a key data reception interrupt processing routine, and an operator data reception interrupt processing routine.

Further, in the electronic musical instrument of this embodiment, a so-called pre-assigner system is used as a method of selecting the tone generation channel and the effect addition channel. According to this pre-assigner method, the pre-assigner task performs a predetermined time (5
For each mSec) interval, an appropriate tone generation channel and effect addition channel are selected in advance, and when new tone information is input, this tone assignment channel is assigned with reference to the result of this pre-assignment. By determining the effect addition channel and the effect addition channel, it is possible to promptly select a tone generation channel and an effect addition channel to be assigned to new input of tone information.

The operation of various tasks will be described below. The key data reception task (FIG. 13) reads musical tone information (note-on and / or note-off message) from the MIDI circuit 20, performs note-on processing at the time of note-on message, and activates the main assigner.

The main assigner task (FIG. 14) selects the tone generation channel and the effect addition channel in accordance with the assigned order set based on the pre-assignment order of the tone generation channel and the effect addition channel set in the pre-assigner task. , Make a pronunciation request to the pronunciation task.

The sounding task (FIGS. 15 and 16) performs a process of stopping the sound generation of the tone generation channel selected by the main assigner task if it is sounding, and the sound generation is stopped. If or when stopped,
Based on the inputted musical tone information, various parameters necessary for the musical tone generating channel to generate the musical tone information are calculated, and the calculated parameters are transferred to the musical tone generating channel to instruct the start of sound generation. Also, for the effect-added channel selected in the main assigner task, if there is a musical tone stored in it, it is muted, and if no musical tone is stored Based on the above, various parameters and the like required in the effect addition channel for adding the effect are calculated, and the calculated parameters and the like are transferred to the effect addition channel. It also instructs the connection of the selected tone generation channel and the selected effect addition channel.

The pre-assigner task (FIG. 17) is periodically activated by a timer to read the tone generation amount of each tone generation channel from the tone generation channel management map, set this as the pre-assigner tone generation amount, and based on this pre-assigner tone generation amount. Pre-assign order setting routine (Figs. 18 to 20)
Set the pre-assignment order of the tone generation channel according to. Further, the sound output amount of each effect addition channel is read from the effect addition channel management map, and this is set as the pre-assigner sound output amount, and the pre-assign order of the effect addition channels is similarly set based on this pre-assigner sound output amount. In this pre-assignment order setting routine, the pre-assignment order of each tone generation channel is set, in principle, in ascending order of the pre-assigner tone generation amount of the tone generation channel. Also, as a general rule, set the pre-assignment order of each effect-added channel in the order of decreasing pre-assigner sound output of the effect-added channels, but do not set it higher than the pre-assigned order of the connected tone generation channels. To do.

The tone generation amount of the tone generation channel management map and the tone generation amount of the effect-added channel management map are sequentially updated by the envelope task. In the envelope task (FIGS. 21 and 22), it is checked whether or not the tone generation of the tone generation channel is finished, and if the tone generation is finished, the tone generation amount is set to "0". For those that have not finished sounding, it is checked whether the musical sound is a decaying sound system or a continuous sound system, and for the decaying sound system, the amount of pronunciation of the decaying sound system that matches it is calculated (Fig. 23). The amount of sound of the continuous tone system that matches the calculation is calculated (FIG. 24). When updating the tone generation amount of the tone generation channel management map, the influence of the connected effect addition channel is reflected. In addition, the amount of generated musical tones stored in the effect addition channel is calculated (FIG. 25).

Detailed Description of Various Maps Next, various maps set in a predetermined area of the RAM 24 will be described with reference to FIGS. 2 to 7 show a part of these maps. The MIDI channel map (FIG. 2) "0 to 15" stores the following in correspondence with the MIDI channel numbers indicating the types of 16 MIDI channels. (1) Part number: The type of 16 parts is "0-15"
I will show you.

The part map (FIG. 3) "0 to 15" stores the followings corresponding to the part numbers indicating the types of 16 parts. (1) Tone number: Indicates a tone color. (2) Truncate prohibition phase number: Indicates the final number of the phase in which allocation of new musical sounds is prohibited. That is, the time to reach this number [= phase number x predetermined unit time (5 mS
ec)] Prohibit the allocation of new musical tones. In this embodiment, it is the phase number until the attack ends. (3) Continuous tone system flag: The continuous tone system tone is indicated by "1" and the attenuated tone system tone is indicated by "0".

Task management map (FIG. 6) "1 to 6" stores the following items corresponding to task numbers indicating the types of tasks. The task number is
"1" is a key data receiving task, "2" is a main assigner task, "3" is a pronunciation task, "4" is a pre-assigner task, "5" is an envelope task, and "6" is an operator data receiving task. Yes, the lower the number, the higher the priority. (1) Timer processing request flag: Indicates that timer processing is necessary with "1". (2) Status: "0" indicates that the task status is RUN, and "1" indicates that the task status is READY.
The weight is indicated by "2". (3) Waiting event value: Indicates the type of waiting event whose status is wait. (4) Event occurrence flag: The event occurrence is indicated by "1" for each event of the task.

Music tone generation channel management map (FIG. 7) The following are stored corresponding to the tone generation channel numbers indicating 16 tone generation channels by the numbers "0 to 15". (1) Pronunciation amount: The pronunciation amount of the musical sound currently being generated is set to "0000."
It is indicated by "H" to "FFFFH". (2) Truncate prohibition flag: Indication of prohibition of allocation of a new musical tone is indicated by "1". (3) Rapid decay flag: The previous musical tone is being rapidly attenuated. Is indicated by “1.” (4) Processing wait flag 1: Waiting for the first processing in the sounding task is indicated by “1.” (5) Processing wait flag 2: Waiting for the second processing in the sounding task Is indicated by “1.” (6) Processing wait flag 3: Waiting for the third processing in the sounding task is indicated by “1.” (7) Note number: Indicates the pitch of a musical tone. (8) Velocity : Indicates the velocity of musical sound (9) Musical tone generation parameter group: Indicates the values of various parameters related to musical tone generation (10) Key pressing order: Note-on The reception order is indicated by "0-15", the oldest note-on Receive order is indicated by "0" (11) Notes status: the note-on with "1",
Note-off is indicated by "0". (12) Part number (13) Connection destination effect additional channel number: Indicates the effect additional channel number of the effect additional channel to be connected.

Envelope management map (FIG. 4) The following are stored corresponding to the envelope channel numbers indicating 16 envelope channels by the numbers "0 to 15" corresponding to each tone generation channel. (1) Envelope level: Envelope level is "00"
00H "to" FFFFH "(2) Target value: The envelope level to be reached next is" 0 "
000H "to" FFFFH ". (3) Rate: Indicates the amount of change in the envelope level per predetermined time (5 mSec). Specifically, the sign bit indicating positive and negative and the absolute value are" 0000H "to" FFFFH ". (4) Phase number: Indicates the current phase number (elapsed stage from the start of tone generation) (5) Truncate prohibition phase number: Final phase number that prohibits allocation of a new tone (6) Envelope generation parameter group: Shows the values of various parameters related to the envelope generation of musical sounds.

Effect-added channel management map (FIG. 5) The following are stored corresponding to the effect-added channel numbers indicating 20 effect-added channels by the numbers "0 to 19". (1) Sound generation amount (2) Truncate prohibition flag (3) Rapid decay flag (4) Effector control parameter group: Indicates the values of various parameters that control the acoustic effect added to the musical sound. (5) Output coefficient group: Shows the ratio of the envelope level of the musical sound output from the envelope level of the musical sound input to the effect-added channel. The output coefficient of the original sound shows the ratio of the musical sound output without delay. The output coefficient of the sound effect indicates the ratio of the musical sound output in each elapsed phase (1 phase = 5 mSec) for each elapsed phase number from 1 to 400. For example, if the number of elapsed phases is "1", the output coefficient is "elapsed phase 1" (immediately after input, up to 5 mSec)
Indicates the ratio of the musical sound output by (for example, 4 mSec delay). The total sum is the total sum of the output coefficients of the original sound and the sound effect. (6) Maximum number of elapsed phases: Indicates the maximum number of elapsed phases with an output coefficient of 0.05 or more. (7) Processed flag: “1” indicates that the sound volume calculation process has been completed. (8) Connected tone generation channel number: Indicates the tone generation channel number of the connected tone generation channel.

Description of Envelope Level Buffers Next, 20 envelope level buffers set in a predetermined area of the RAM 24 corresponding to 20 effect-added channels will be described. Each envelope level buffer is a buffer that sequentially stores envelope levels, and is virtually configured in a ring shape. When the writing is instructed, the writing is performed to the address indicated by the writing pointer, and when the writing is completed, the writing pointer is advanced. When the reading is instructed, the reading is performed to the address indicated by the read pointer. When clearing is instructed, "0" is written in all storage areas.
Each envelope level buffer can store 400 pieces of envelope level data.

Detailed Description of Various Variables Various variables used in the flowcharts of various tasks executed in the present electronic musical instrument will be described in detail below. First, the various variables used in the flowcharts of FIGS. 8 to 25 are as follows. NSTK request source task number: Indicates the task number of the task that made the monitor call. NSET Request source event value: Indicates the type of event to be processed next in the task that made the monitor call. NDTK request destination task number: Shows the task number of the next scheduled task. NDET Request event value: Indicates the type of event to be processed in the task scheduled to be executed next. IEDF initial setting completion flag: Indicates the completion of initial setting in all tasks with "1". TCTN Timer interrupt processing target number: Indicates the task number of the timer interrupt processing target. TCNE [N] Nth task timer counter value: Indicates the value of the timer counter for the task whose task number is N. TCND [N] Nth task time interval: Indicates the time interval for issuing a timer event to the task with task number N. TCNE [TCTN] No. TCTN task timer counter value: Indicates the value of the task timer counter whose task number is the timer interrupt processing target number TCTN. TCND [TCTN] TCTN task time interval: Indicates the time interval for issuing a timer event to the task whose task number is the timer interrupt processing target number TCTN.

[Key Data Reception Task] NTNM Note Number: Indicates the pitch of performance information based on a note-on and / or note-off message. NTST note status: "1" indicates performance information based on the note-on message, and "0" indicates performance information based on the note-off message. NTVL velocity: Indicates the velocity of performance information based on the note-on message. MCNM MIDI channel number: Indicates the MIDI channel number of performance information based on the note-on and / or note-off message. PTNM part number

[Main Assigner Task] MASS [N] N-th assigned tone generation channel number:
The tone generation channel number of the tone generation channel whose assignment order is the Nth assignment order (Nth assignment order) is shown. TASN Target Assignment Order: Indicates the assignment order number of the assignment target. MAEF Main assigner processing flag: Indicates that the main assigner task has performed new assignment processing with "1". MASS [TASN] Musical tone generation channel number of assignment order TASN: Indicates the tone generation channel number of the tone generation channel whose assignment order is the target assignment order TASN. GACN Number of assignable tone generation channels: Shows the number of assignable tone generation channels. MESS [N] Nth assign order effect additional channel number MESS [TASN] Assign order TASN effect additional channel number

[Sound Generation Task] GCTN Sound Generation Channel Number for Sound Generation Processing: Indicates the sound generation channel number for processing. TDNF Flag for rapid attenuation incomplete: Indicates that one of the tone generation channels is in rapid attenuation with "1".

[Pre-Assigner Task] GN Music Sound Generation Channel Number PLEV [GN] Pre-Assigner Sound Generation Amount of Music Sound Generation Channel Number GN PACT [GN] Pre-Assigner Rapid Decaying Flag of Music Sound Generation Channel Number GN PAIT [GN] Music Sound Generation Channel Number GN Pre-assigner truncate prohibition flag PAPN [GN] Pre-assigner key pressing order for tone generation channel number GN PACN Pre-signer number of assignable tone generation channels: Indicates the number of tone generation channels that can be assigned in the pre-assigner task. N pre-assigned order RN pre-assigned reverse order PASS [N] N-th pre-assigned order Musical tone generation channel number:
The tone generation channel number of the tone generation channel with the pre-assigned rank N is shown. PN processing target key pressing order PESS [N] Nth pre-assigned order effect-added channel number: Indicates the effect-added channel number of the effect-added channel whose pre-assignment order is the N-th order. EN effect addition channel number PELV [EN] Effect addition channel number EN pre-assigner sound output PECT [EN] Effect addition channel number EN pre-assigner rapid decay flag PEIT [EN] Effect addition channel number EN pre-assigner truncate prohibition flag PASG compatible Tone generation channel pre-assignment order: Shows the pre-assignment order of the tone generation channel corresponding to the effect-added channel to be processed. CN Replacement target order PESS [CN] CN pre-assign order effect effect channel number PASS [CN] CN pre-assign order Music tone generation channel number

[Envelope task] ECTN Envelope processing target number EPNM Envelope processing target part number ELEN Envelope level ERTE rate FNOW phase number FPSN Shortest key pressing phase number: At least the final phase number of the phase predicted to be in the note-on state. FPCN Number of key press continuation phases: Indicates the length of note-on continuation. FVCN Number of continuous sounding phases EVOL Sound volume: Sound volume of tone generation channel EEVL Sound volume: Sound volume of effect-added channel ETWT Total output coefficient: Shows total output coefficient group. ETWM output coefficient sum maximum value: Indicates the maximum sum of output coefficient groups. EFMN Maximum number of elapsed phases: Indicates the maximum number of elapsed phases. ELFN Number of elapsed phases: Indicates the number of elapsed phases to be processed in the calculation of the pronunciation volume accumulated in the effect-added channel. Next, each flow will be described in detail. First, the monitor program will be described with reference to the flowcharts shown in FIGS.

Detailed Description of Flowcharts for Various Tasks The flowcharts for various tasks will be described in detail below. First, the monitor program will be described with reference to the flowcharts shown in FIGS. Reset Routine (FIG. 8) This is a routine that is executed when a reset is applied when the power is turned on. The processing in each step ZA1 to ZA3 is as follows. [ZA1] The statuses of all task numbers in the task management map are set to "1: ready", and the timer processing request flag, the wait event value, and the event occurrence flag are set to "0". Further, initial setting such as setting the initial setting completion flag IEDF to “0: incomplete initial setting” is performed. [ZA2] The request source task number NSTK is updated to "1: key data reception task", and the status of the task number "1: key data reception task" in the task management map is set to "0: run". [ZA3] The key data reception task is executed.

Event wait monitor call routine (FIG. 9) This routine is executed when an executing task makes an event wait monitor call. The processing in each step ZB1 to ZB5 is as follows. [ZB1] For the task number corresponding to the request source task number NSTK in the task management map, one of the event occurrence flags corresponding to the bit that is "1" in the binary representation of the request source event value NSET is "1: event occurrence". It is determined whether or not it is ". If any of the corresponding event occurrence flags is "1: event occurrence", the process returns to the task that made the event wait monitor call. In determining the event occurrence flag, for example, if the request source event value NSET is “1”, the first event occurrence flag, if the request source event value NSET is “2”, the second event occurrence flag, Request source event value NS
When ET is "3", the first and second event occurrence flags are determined.

[ZB2] In the determination in step ZB1, if none of the event generation flags to be determined indicate "1" and no event has occurred, the request source task number NSTK in the task management map is satisfied. Set the task number status to "2: wait" and set the wait event value to the request source event value.
Set to NSET. In addition, in preparation for the resumption of processing, interrupt processing (hereinafter simply referred to as interrupt processing of the request source task) such as saving the contents of registers and the like being used in the request source task to the stack area is performed. [ZB3] By checking the task management map, a task having a priority lower than that of the task that made the event waiting monitor call and the corresponding status is "1: ready" is searched for in the order of task numbers. If there is no task indicating this ready, the request source task number NSTK is set to "7" indicating sleep, and sleeps. In addition, from sleep, timer 25
Alternatively, based on a hardware interrupt from the MIDI circuit 20, a timer interrupt processing routine, a key data reception interrupt processing routine, or an operator data reception interrupt processing routine, which will be described later, is activated. [ZB4] When the highest priority ready task is found in step ZB3, the request source task number NSTK is updated to the task number of the task, and the task number status of the task in the task management map is set to "0: run". To do. [ZB5] The task corresponding to the request source task number NSTK is executed. When executing a task, a restart process (hereinafter simply referred to as a restart process) such as returning the data saved in the stack area to the original register in the interrupt process of the task is performed.

Event occurrence monitor call routine (Fig. 1
0) This routine is executed when the task being executed makes an event occurrence monitor call. The processing in each step ZC1 to ZC7 is as follows. [ZC1] For the task number corresponding to the requested task number NDTK in the task management map, the event occurrence flag corresponding to the bit that is "1" in the binary representation of the requested event value NDET is set to "1". For example, the first event occurrence flag is set to "1" when the request destination event value NDET is "1", and the second event occurrence flag is set to "1" when the request destination event value NDET is "2". [ZC2] It is determined whether or not the status of the task number corresponding to the requested task number NDTK in the task management map is "2: wait" and the wait event value corresponds to the requested event value NDET. If the status is not "2: wait" or the wait event value does not correspond to the request destination event value NDET, the task that returned this monitor call is returned. It should be noted that whether or not the wait event value corresponds to the request destination event value NDET is determined by the bit in the binary representation of the request destination event value NDET corresponding to the bit that is "1" in the binary representation of the wait event value. Judgment is made based on whether any one of the bits is "1". For example, when the wait event value is "1", the first bit of the request destination event value NDET is "1", and when the wait event value is "2", the second bit of the request destination event value NDET is " When the wait event value is "1" and the wait event value is "3", it is determined that the request destination event value NDET corresponds when the first or second bit is "1".

[ZC3] In the determination in step ZC2, when the status to be determined is "2: wait" and the waiting event value corresponds to the requested event value NDET, this status is set to "1: ready". To do. [ZC4] Request destination task number NDTK is the request source task number
Whether or not the priority of the requested task is higher than that of the requested task is determined by whether or not it is less than NSTK. If the request destination task number NDTK is not less than the request source task number NSTK and the priority of the request destination task is not high, the process returns to the task that made this monitor call. [ZC5] If it is determined in step ZC4 that the requested task number NDTK is less than the requested task number NSTK and the requested task has a high priority, the status of the task number corresponding to the requested task number NSTK in the task management map. Is set to “1: ready”, and the request source task is interrupted in preparation for the resumption of processing. [ZC6] Request source task number NSTK to request destination task number
While updating to NDTK, the status of the task number corresponding to the requested task number NDTK in the task management map is set to "0: run". [ZC7] The task having the task number corresponding to the requested task number NDTK is executed. When executing a task, the task is restarted.

Timer Interrupt Processing Routine (FIG. 11) In this timer interrupt processing routine, the timer 25
When a timer interrupt occurs from, first check the timer counter corresponding to each task, and if the value exceeds "1", decrement the timer counter by "1",
When it does not exceed "1", the first event occurrence flag of the task number in the task management map is set to "1: event occurrence", and when the status of the task is "2: wait", the status is changed. Set to "1: Ready". Next, it is judged in order from the task with the highest priority whether or not the task should be executed, and the task satisfying the condition is executed first. Each step ZD
The processing in 1 to ZD16 is as follows. [ZD1] It is determined whether or not the initialization completion flag IEDF is "1: initialization completed". If the initialization completion flag IEDF is not "1", the initialization of all tasks has not been completed yet, so the timer interrupt processing is terminated and the processing before the timer interrupt is returned to "1". Since the initial setting of each task described later has been completed, the process proceeds to the next step ZD2.

[ZD2] The timer interrupt processing target number TCTN indicating the task number of the timer interrupt processing target is set to "6". [ZD3] It is determined whether or not the timer process request flag of the task number corresponding to the timer interrupt process target number TCTN in the task management map is "1: request". If the timer processing request flag is not "1", the process proceeds to step ZD8. [ZD4] In the determination in step ZD3, if the timer processing request flag to be determined is “1: request”, the TCTN task timer counter value TCNE [TCTN]
It is determined whether or not exceeds "1". If the TCTN task timer counter value TCNE [TCTN] exceeds "1", the process proceeds to step ZD10.

[ZD5] If it is determined in step ZD4 that the TCTN task timer counter value TCNE [TCTN] does not exceed "1", first the TCTN task timer counter value TCNE [TCTN] is set to the TCTN task time. Interval TCND [T
CTN] is added and this value is set as a new TCTN task timer counter value TCNE [TCTN]. Next, set the first event generation flag of the task number corresponding to the timer interrupt processing target number TCTN in the task management map to "1: Event generation".
Set to. [ZD6] The status of the task number corresponding to the timer interrupt processing target number TCTN in the task management map is "2: wait", and the first bit in the binary representation of the wait event value of the task is "1" (for example, wait event It is determined whether or not the value is "1", "3").
If the status is not "2: wait" or the first bit in the binary representation of the wait event value is not "1", the process proceeds to step ZD8.

[ZD7] In the determination in step ZD6, when the status of the determination target is “2: wait” and the first bit in the binary representation of the wait event value of the determination target is “1”, task management Set the status of the task number corresponding to the timer interrupt processing target number TCTN in the map to "1: ready". [ZD8] It is determined whether the timer interrupt processing target number TCTN exceeds "1". If the timer interrupt processing target number TCTN does not exceed "1", all the event occurrence flag setting processing has been completed, so step Z
Proceed to D11. [ZD9] In the determination in step ZD8, if the timer interrupt processing target number TCTN exceeds "1", the timer interrupt processing target number TCTN is decremented by "1" and the process returns to step ZD3. [ZD10] In the determination in step ZD4,
If the TCTN task timer counter value TCNE [TCTN] exceeds "1", the TCTN task timer counter value TCNE
Decrement [TCTN] by "1" and proceed to step ZD8.

[ZD11] Timer interrupt processing target number
In this routine, the TCTN determines whether or not it is less than the request source task number NSTK indicating the processing before the timer interrupt occurs. If the timer interrupt processing target number TCTN is not less than the request source task number NSTK, the priority of the task being executed when the timer interrupt occurs is not lower than the priority of the task corresponding to the processing target number TCTN. Finish the process and return to the task. [ZD12] In the determination at step ZD11, the timer interrupt processing target number TCTN is the request source task number.
If it is less than NSTK, it is determined whether or not the status of the task number corresponding to the timer interrupt processing target number TCTN in the task management map is "1: ready". If this status is not "1", step ZD1
Proceed to 6.

[ZD13] In the determination in step ZD12, the status of the determination target is "1: ready".
If it is, the status of the task number corresponding to the request source task number NSTK in the task management map is “1:
In addition to setting to "Ready", the task corresponding to the request source task number NSTK is interrupted in preparation for restarting the process. [ZD14] The request source task number NSTK is updated to the timer interrupt processing target number TCTN, and task management is performed. The status of the task number corresponding to the timer interrupt processing target number TCTN in the map is set to “0: run.” [ZD15] A timer event occurs.
Executes the task with the task number corresponding to the timer interrupt processing target number TCTN. When executing a task, the task is restarted. [ZD16] In the determination in step ZD12, if the determination target status is not "1: ready", the timer interrupt processing target number TCTN is incremented by "1" and the process returns to step ZD11.

Key data reception interrupt processing routine (see FIG. 1
2) This routine is executed when an interrupt is received from the MIDI circuit 20 to generate a key data reception event. The processing in each step ZE1 to ZE6 is as follows. [ZE1] It is determined whether or not the initialization completion flag IEDF is "1: complete". If the initialization completion flag IEDF is not "1", the initialization of all the tasks has not been completed yet, so the key data reception interrupt process is terminated and the process returns to the process before the generation of the key data reception interrupt. [ZE2] If the initial setting completion flag IEDF is "1: complete" in the judgment at step ZE1, the first event occurrence flag of the task number "1: key data receiving task" in the task management map is "1: occurred". Set to ". [ZE3] It is determined whether or not the status of the task number "1: key data reception task" in the task management map is "2: wait" and the wait event value is "1: wait for key data reception event". If this status is not "2: wait" or the wait event value is not "1: wait for key data reception event",
The key data reception interrupt process is terminated and the process returns to the process before the key data reception interrupt occurred.

[ZE4] In the determination at step ZE3, when the status of the determination target is "2", the wait event value is "1" and the key data reception event is waited, a key data reception interrupt is generated in this routine. It is determined whether the request source task number NSTK indicating the previous process is less than “7”. When the request source task number NSTK is less than “7”, the status of the task number corresponding to the request source task number NSTK in the task management map is set to “1: ready” and a timer interrupt is provided in preparation for restarting the process. Performs the process of interrupting the task before it occurs.
If it is not less than "7", no special processing is required. [ZE5] Request source task number NSTK is changed to task number "1:"
In addition to updating to the "key data reception task", the status of the task number "1: key data reception task" in the task management map is set to "0: run." [ZE6] A key data reception event occurs. Executes the data reception task.When executing the task, the key data reception task is restarted.

Manipulator data reception interrupt processing routine This is executed when a manipulator data reception interrupt is received from the MIDI circuit 20, and an operator data reception request event is generated. The processing in each step ZG1 to ZG7 is as follows. [ZG1] It is determined whether or not the initialization completion flag IEDF is "1: complete". If the initialization completion flag IEDF is not "1", the initialization of all the tasks has not been completed yet, so the manipulator data reception interrupt routine is terminated and the process returns to the process before the occurrence of the manipulator data reception interrupt. . [ZG2] If the initial setting completion flag IEDF is "1: complete" in the determination in step ZG1, the first event occurrence flag of the task number "6: operator data reception task" in the task management map is "1:". Occurrence ”
Set to. [ZG3] The status of the task number “6: operator data reception task” in the task management map is “2:
It is determined whether the status is "wait" and the wait event value is "1: wait for manipulator data reception event" .This status is not "2: wait" or the wait event value is "1: manipulator data reception event". If it is not "wait", the manipulator data reception interrupt process is terminated and the process returns to the process before the manipulator data reception interrupt. [ZG4] In the determination at step ZG3, the task number "6: Manipulator data reception" in the task management map When the status of the "task" is "2: wait" and the wait event value is "1", this status is set to "1: ready".

[ZG5] It is determined whether or not the priority of the request source task is lower than the priority of the operator data receiving task depending on whether or not the request source task number NSTK exceeds “6”. If the request source task number NSTK does not exceed "6" and the priority of the request source task is not lower than the priority of the operator data reception task, it indicates the task that was executed before the operator data reception interrupt. Requesting task number
Return to NSTK task. [ZG6] If the request source task number NSTK exceeds "6" in the determination in step ZG5 and the priority of the request source task is lower than the priority of the operator data reception interrupt task, the request source task number NSTK is set to " 6: update the operator data receiving task "and set the status of the task number" 6: operator data receiving task "in the task management map to" 0: run ". [ZG7] An operator data reception event occurs. That is, the manipulator data reception task is executed. When the task is executed, the operator data reception task is restarted. When returning to the task that was executed before the operator data reception interrupt in the determination at step ZG5, if the condition is satisfied in the event wait monitor call routine based on the event wait monitor call in any task, the operator data is satisfied. Execute the receive task.

Next, each task is a key data receiving task,
The main assigner task, the pronunciation task, the pre-assigner task, the envelope task, and the operator data receiving task will be described in this order. In addition, at the time of the first processing in each task after the reset is applied at the time of turning on the power, etc., it starts from the first step, for example, the key data receiving task described below from step A1. Further, when interrupting the processing of a certain task and restarting the processing after that, the interrupted processing is restarted so that the processing at the time of interruption in the task is continued. For example, step A2 of the key data reception task
If an event wait monitor call is made in step S3, and the event wait monitor call routine determines that an interrupt event is not generated and the key data receive interrupt is subsequently generated and the key data receive interrupt routine is restarted, step A2 The process is restarted from step A3 following the event waiting monitor call.

Key Data Reception Task (FIG. 13) When a key data reception event occurs, the key data reception task reads performance information based on the note-on and / or note-off message from the MIDI circuit 20 and generates an assign request event. . Each step A1
The processing in A7 is as follows. [A1] Variables and the like occupied by this key data reception task are set to initial values. [A2] The request source event value NSET is set to "1" and an event wait monitor call is made. When the key data reception event occurs, the process proceeds to the next step A3. [A3] Task number “1:” in the task management map
The first event occurrence flag of the "key data reception task" is set to "0" and the wait event value is set to "0". [A4] First, performance information based on the note-on and / or note-off message is sent from the MIDI circuit 20. MIDI channel number MCNM, note number NTNM, note status NTST and velocity NT, which correspond to the MIDI channel number, note number, note status and note velocity of the read performance information.
VL. Next, the MI in the MIDI channel map
Let the part number of the MIDI channel number corresponding to the DI channel number MCNM be the part number PTNM.

[A5] Note status NTST is "1:"
If the note status NTST is not "1", the process proceeds to the next step A6, and if it is "1", the process proceeds to step A7. [A6] Note off process The tone generation channel management map is searched for the tone generation channel number whose part number and note number are the part number PTNM and note number NTNM, and the note status is "1", in the order of smallest key depression order, and the lowest key depression order. The note status of the tone generation channel number is set to “0.” Return to step A2 [A7] Note-on processing An assign request event is generated, that is, the requested task number NDTK is set to “2: Main assigner task”. Then, the requested event value NDET is set to "1" and an event occurrence monitor call is performed, and the process returns to step A2.

Main Assigner Task (FIG. 14) When an assign request event occurs, the main assigner task writes a note number in a predetermined area of the tone generation channel management map based on the assign order set in the pre-assigner task described later. Write NTNM etc. and generate a pronunciation request event. The processing in each of the steps B1 to B7 is as follows. [B1] The tone generation channel management map and the effect addition channel management map are initialized, and variables and the like occupied by the main assigner task are set to initial values. The key pressing order of each tone generation channel number in the tone generation channel management map means the tone generation channel number, and the connected tone generation channel number of each effect addition channel management number in the effect addition channel management map means no connection. Set to "99". Also, the N-th assigned order musical tone generation channel number MASS [N] and the N-th assigned order effect addition channel number MESS [N] (N is 0, 1, to 15)
Are set to the corresponding "N (= 0,1, -15)".
Further, the target assign order TASN is set to "0", and the number of assignable tone generation channels GACN is set to the maximum number "16". [B2] The request source event value NSET is set to "1" and an event wait monitor call is made. When the assignment request event occurs, the process proceeds to the next step B3. [B3] Task number “2: in task management map”
Set the wait event value of "main assigner task" to "0",
The first event occurrence flag is set to "0".

[B4] It is determined whether or not the target assign order TASN is less than the number of allocatable tone generation channels GACN. If the number of allocatable tone generation channels is not less than GACN, there is no more tone generation channel to be assigned anymore, and the process returns to step B2. [B5] If it is determined to be less than in step B4,
Assignment order TASN in the tone generation channel management map
Tone generation channel number MASS [TASN] of the tone generation channel number processing waiting flag 1, processing waiting flag 2 and processing waiting flag 3 to "1: waiting", part number to the part number PTNM, note Number the note number NTNM
The note status is set to “1”, the velocity is set to velocity NTVL, and the connection effect addition channel number is set to the effect addition channel number MESS [TASN] of the assign order TASN. Further, the main assigner processing flag MAEF is set to "1: main assigner processing". Also, the effect of the assignment order TASN in the effect addition channel management map is the order of assignment TA of the tone generation channel number of the connection destination of the effect addition channel number corresponding to MESS [TASN]
Set to SN musical tone generation channel number MASS [TASN]. [B6] A sounding request event is generated. That is, the request destination task number NDTK is set to "3: sounding task", the request destination event value NDET is set to "2", and an event occurrence monitor call is performed. [B7] The target assignment order TASN is incremented by "1" and the process returns to step B2.

Sounding Task (FIGS. 15 and 16) The sounding task gives an instruction to start rapid attenuation if the previous sounding has not ended in the sound generation channel that generates a new musical sound when a sounding request event occurs. . Further, when the previous musical sound is accumulated according to the effect-added channel connected to the musical sound generation channel, the start of rapid attenuation is instructed (first processing). Further, the parameters relating to the tone generation and effect addition are calculated and set based on the note number NTNM and the like (second process). If the sound generation of the tone generation channel ends, or if there is no tone accumulated in the connected effect addition channel, or if there is no tone, the new generation is instructed to the tone generation channel and Instruct to connect (third process). The processing in each of steps C1 to C25 is as follows. [C1] The variables and the like occupied by this sounding task are set to initial values, and the rapid decay end 1 FIFO, the rapid decay end 2 FIFO, and the envelope level buffer that store the tone generation channel number for which the rapid decay has ended are cleared. , The tone generation circuit 26 is initialized. Also, the third task timer counter value TCNE [3] and the third task time interval TCND [3] are set to "0", and the timer processing request flag of the task number "3: sounding task" in the task management map. Is set to “1: Requested”. [C2] The request source event value NSET is set to "2" and an event wait monitor call is performed. When the pronunciation request event occurs, the process proceeds to the next step C3.

[C3] First, the waiting event value of the task number "3: sounding task" in the task management map is set to "0", and the second event occurrence flag is set to "0". Set the generation channel number GCTN to "0". [C4] It is determined whether or not the processing wait flag 1 of the tone generation channel number corresponding to the tone generation target tone generation channel number GCTN in the tone generation channel management map is "1: waiting for processing". This processing wait flag 1 is "1"
If it is, the process proceeds to the next step C5, and if it is not "1" and the first process (step C5) is unnecessary, the process proceeds to step C6.

[C5] The first process is performed as follows. It is determined whether or not the envelope level of the envelope channel number corresponding to the tone generation channel number GCTN to be sounded in the envelope management map is "0". When the envelope level is not "0", the process proceeds to the next step. When the envelope level is "0" and the rapid attenuation processing is unnecessary, the process proceeds to. Set the rapid decay flag of the tone generation channel number corresponding to the tone generation channel number GCTN to be sounded in the tone generation channel management map to "1: rapid decay" and start rapid decay for the corresponding tone generation channel. Instruct and proceed to. When instructing to start the rapid attenuation, the target value is set to "0" and the rate is set to the rapid attenuation rate, and the channel is transferred to the corresponding tone generation channel. Set the truncation inhibition flag of the tone generation channel number corresponding to the tone generation channel number GCTN to be sounded in the tone generation channel management map to "1: truncate inhibition" and the tone generation amount to "FFFFH", and proceed to.

Sound generation channel in the tone generation channel management map Sound generation channel number of the tone generation channel number corresponding to the tone generation channel number corresponding to the tone generation channel number It is determined whether or not If the sound generation amount is not "0", the process proceeds to the next step, and if it is "0", the process proceeds to. Sound generation channel in the tone generation channel management map Sound generation channel number to be sounded Connection destination of tone generation channel number corresponding to GCTN Effect corresponding to additional channel number Effect of additional channel management map Rapid decay flag of additional channel number is set to "1:" Set to “during rapid decay” and instruct the corresponding effect addition channel to start rapid decay, and proceed to. Sound generation channel in the tone generation channel management map Sound generation channel number for tone generation Connection destination of tone generation channel number corresponding to GCTN Effect corresponding to additional channel number Effect of additional channel management map Truncate prohibition flag of additional channel number is "1: Truncated" Set "Prohibition" to "FFFFH" and set to "FFFFH", and proceed to. Set the process wait flag 1 of the tone generation channel number corresponding to the tone generation channel number GCTN to be sounded in the tone generation channel management map to "0"
Proceed to 6.

[C6] It is determined whether the tone generation channel number GCTN to be sounded is less than "15". If the tone generation channel number GCTN to be tone processed is less than "15", the process proceeds to the next step C7. Go to step C8. [C7] The tone generation channel number GCTN to be sounded is incremented by "1" to prepare for the processing of the next tone generation channel, and the process returns to step C4. [C8] The tone generation channel number GCTN to be sounded is set to "0". [C9] It is determined whether the processing wait flag 2 of the tone generation channel number corresponding to the tone generation target tone generation channel number GCTN in the tone generation channel management map is "1: waiting for processing". This processing wait flag 2 is "1"
If it is, the process proceeds to the next step C10, and if it is not "1" and the second process (step C10) is unnecessary, the process proceeds to step C11.

[C10] Sound processing target sound generation channel management map of the sound generation channel corresponding to the sound generation channel number GCTN The tone number of the tone generation channel number corresponding to the tone generation channel number GCTN, the velocity, and the tone color number of the part number in the part map corresponding to the part number of the tone generation channel number are stored in the ROM 23 corresponding to the tone number. The tone generation parameter group of the tone generation channel number corresponding to the tone generation channel number GCTN subject to the tone generation processing in the tone generation channel management map and the envelope On the management map Tone generation target tone generation channel number Corresponding parameter of envelope generation parameter group corresponding to tone generation channel number and tone generation target tone generation channel number in tone generation channel management map Effect corresponding to additional channel number Effect of additional channel management map Set to effector control parameter group, output coefficient group and maximum elapsed phase number of additional channel number. In addition, the envelope level buffer corresponding to the connection destination effect addition channel number is cleared. At the same time, the processing wait flag 2 is set to "0".

Also, the truncation prohibition phase number of the envelope channel number corresponding to the tone generation target tone generation channel number GCTN in the envelope management map is set to the truncation prohibition phase number of the part number in the part map. The tone generation channel number GCTN to be sounded in the tone generation channel management map
The key-depressing order of the tone-generating channel number corresponding to the above is updated as follows. The tone generation channel number GCTN corresponding to the tone generation target tone generation channel number is decremented by "1", and the tone generation channel number corresponding to the tone generation target tone generation channel number GCTN is depressed. Set the key rank to "15". For example, when a new musical tone is assigned to the musical tone generation channel whose key pressing order is "5", the key pressing order is "6" to "1".
The key depression order of the tone generation channel of 5 "is" 5 "to" 14 "
, And the key depression order of the tone generation channel to which a new tone is assigned is set to “15”.

[C11] It is determined whether or not the tone generation target tone generation channel number GCTN is less than "15". If the tone generation channel number GCTN to be sounded is less than "15", the process proceeds to the next step C12, where "1" is set.
If it is not less than 5 ", the process proceeds to step C13. [C12] The tone generation target tone generation channel number GCTN is incremented by" 1 "and the process returns to step C9. [C13] The rapid decay incomplete flag TDNF is set to" 0 ". The tone generation target tone generation channel number GCTN is set to “0.” [C14] In the tone generation channel management map, the processing wait flag 3 of the tone generation channel number corresponding to the tone generation target tone generation channel number GCTN is set to “1”. : Waiting for processing ”
Or not. When the processing wait flag 3 is "1", the process proceeds to the next step C15,
Not "1" but the third process (steps C15, C16, C
When step 19) is unnecessary, the process proceeds to step C17. [C15] The tone generation target tone generation channel number GCTN in the tone generation channel management map and the rapid decay flag of the tone generation channel number corresponding to the tone generation channel number GCTN and the tone generation target tone generation channel number GC in the tone generation channel management map
Effect of connection destination of tone generation channel number corresponding to TN Effect corresponding to additional channel number Effect of additional channel management map Whether any of rapid addition flag of additional channel number is "1: rapid attenuation" To judge. If both of the rapid damping flags are not "1", the process proceeds to the next step C16, and if any of them is "1", the process proceeds to step C19.

[C16] The target value and rate for the first phase are calculated based on the envelope generation parameter group of the envelope channel number corresponding to the tone generation channel number GCTN to be sounded in the envelope management map, and the envelope management map is calculated with the target value and rate. Set the target value and rate of, and set the phase number to "1",
Set the envelope level to "0". In addition, the tone generation amount of the tone generation channel number corresponding to the tone generation target channel number GCTN in the tone generation channel management map is set to a value obtained by adding “8000H” to the upper 15 bits of the attack level included in the envelope generation parameter group. Set. Also, the tone generation parameter group of the tone generation channel number corresponding to the tone generation target tone generation channel number GCTN in the tone generation channel management map and the target value of the envelope channel number corresponding to the tone generation target tone generation channel number GCTN in the envelope management map And the rate are transferred to the tone generation channel corresponding to the tone generation channel number GCTN targeted for tone generation in the tone generation circuit 26. In addition, the tone generation channel number in the tone generation channel management map is connected to the tone generation channel number corresponding to the tone generation channel number GCTN. The effect corresponding to the additional channel number is added. The effect of the additional channel management map is set to the effector control parameter group of the additional channel number. Transfer to the corresponding effect-added channel in the generation circuit 26.
The tone generation circuit 26 generates a tone generation target tone generation channel number GCTN and a tone generation channel number GCTN corresponding to the tone generation target tone generation channel number GCTN in the tone generation channel management map. Instruct the start of the outbreak. Then, the processing wait flag 3 is set to "0".

[C17] It is judged whether or not the tone generation target tone generation channel number GCTN is less than "15". If the tone generation channel number GCTN to be sounded is less than "15", the process proceeds to the next step C18 and is "15".
If it is not less than, it proceeds to step C20. [C18] The tone generation target tone generation channel number GCTN is incremented by "1", and the process returns to step C14. [C19] The rapid decay incomplete flag TDNF is set to "1: incomplete", and the process proceeds to step C17. [C20] It is determined whether or not the rapid decay incomplete flag TDNF is "1: incomplete". When the rapid decay incomplete flag TDNF is "1", the process proceeds to the next step C21,
If it is not "1" and all tone generation processing has been completed, the process returns to step C2. [C21] The request source event value NSET is set to "3" and an event wait monitor call is performed. When either the pronunciation request event or the timer event for the pronunciation task occurs, the process proceeds to the next step C22. [C22] The second event occurrence flag of the task number “3: Sounding task” in the task management map is “1”
Or not. If the second event occurrence flag is not "1", proceed to the next Step C23,
If it is "1", it means that a sounding request event has occurred, and therefore the process returns to step C3. [C23] The first event occurrence flag of the task number “3: Sounding task” in the task management map is “1”
Since the timer event occurs, the wait event value of the task number “3: sounding task” in the task management map is set to “0” and the first event generation flag is set to “0”.
Set to.

[C24] Rapid attenuation end 1FIFO and rapid attenuation end 2F provided in the tone generation circuit 26
Determine if both IFOs are empty. If both the rapid decay end 1 FIFO and the rapid decay end 2 FIFO are empty, the process returns to step C21, and if neither is empty, the process proceeds to the next step C25. [C25] If the rapid decay end 1FIFO is not empty, the musical tone generation channel numbers of the musical tone generation channels whose envelope levels have become “0” by the rapid damping process are sequentially lowered from the rapid decay end 1FIFO, and the lowered musical tone generation channel numbers The rapid decay flag of the tone generation channel number in the tone generation channel management map corresponding to is set to "0". If the rapid attenuation end 2FIFO is not empty, the effect addition channel number that clears the tone signal stored inside the effect addition channel by the rapid attenuation process 2FIFO is sequentially lowered to correspond to the lowered effect addition channel number. The rapid attenuation flag of the effect addition channel number in the effect addition channel management map is set to "0". Then, the process returns to step C13.

Pre-assigner task (FIG. 17) The pre-assigner task starts execution when a timer event for the pre-assigner task occurs, and in principle updates the assigning order based on the amount of sound generation. Each step D
The processing in 1 to D11 is as follows. [D1] Variables and the like occupied by this pre-assigner task are set to initial values. Also, the fourth task timer counter value
Set TCNE [4] to “5” and the fourth task time interval TCND [4] to “4”. Further, the timer processing request flag of the task number “4: pre-assigner task” in the task management map is set to “1: request”. [D2] The request source event value NSET is set to "1" and an event wait monitor call is made. When a timer event for the pre-signer task occurs, the next step D3
Proceed to. [D3] Task number “4: in task management map”
The wait event value of the “pre-signer task” is set to “0” and the first event occurrence flag is set to “0.” [D4] The main assigner processing flag MAEF is set to “0”.

[D5] Steps C5 and C of the sounding task
The tone generation amount of each tone generation channel number of the tone generation channel management map, which is set in step 16 and is updated in step E18 of the envelope task to be described later, is defined as the pre-assigner tone generation amount PLEV [GN] of the corresponding tone generation channel number GN. To do. Also, the rapid decay flag of each tone generation channel number in the tone generation channel management map is set as the pre-assigner rapid decay flag PACT [GN] of the corresponding tone generation channel number GN, and the tone prohibition flag corresponds to each tone generation channel. The pre-assigner sequence prohibition flag PAIT [GN] of number GN is set, and the key pressing order is set to the pre-assigner key pressing order PAPN [GN] of the corresponding tone generation channel number GN. In addition, the pronunciation amount of each effect addition channel number of the effect addition channel management map set in steps C5 and C16 of the sound generation task and updated in step E27 of the envelope task is set to the pre-assigner sound generation amount of the corresponding effect addition channel number EN. PELV [EN]. In addition, the rapid attenuation flag of each effect addition channel number in the effect addition channel management map is set as the corresponding pre-assigner rapid attenuation flag PECT [EN] of the effect addition channel number EN, and the trunking prohibition flag is set to the corresponding effect addition channel. The pre-assigner trunk prohibition flag PEIT [EN] with the number EN is set.

[D6] The order of pre-assignment is set. The contents of this process will be described later in detail with reference to the flowcharts of FIGS. [D7] Lock the task. That is, MIDI
Interrupts from the circuit 20 and the timer circuit 25 are prohibited. Execution of other tasks is prohibited until the task lock is released, and the continuation of execution of this task is guaranteed. [D8] It is determined whether or not the main assigner processing flag MAEF is "0: Not processing". When this main assigner processing flag MAEF is "0", step D1
Go to 0. [D9] If the main assigner processing flag MAEF is not “0” in the determination of step D8, that is, the interrupt is generated from the MIDI circuit 20 based on the note-on message received via the MIDI bus during the processing of steps D5 and D6. When the main assigner task is executed by a series of processes, the tone generation mode of the tone generation channel is different from that at the start of step D5, and therefore the process returns to step D4 to release the task lock and reset. [D10] First, the N-th pre-assigned priority sound generation channel number PASS [N] is set as the N-th assigned sound generation channel number MASS [N], and the N-th pre-assigned priority effect added channel number PESS [N] is set as the first. The N-assign order effect addition channel number is set to MESS [N] and the target assign order TASN is set to "0". Next, the number of musical sound generation channels that can be assigned by pre-assigner PACN is set as the number of musical sound generation channels that can be assigned GACN. [D11] The task lock is released and the process returns to step D2. An interrupt that occurs during task lock is executed after the task lock is released.

Preassign order setting routine (FIG. 18-
FIG. 20) The pre-assignment order setting routine in step D6 sets the pre-assignment order of the tone generation channel and the effect addition channel. The processing of steps D601 to D627 is as follows. [D601 to D607] The pre-assignment order of the tone generation channels is set as described below. The pre-assignment order of the tone generation channels during rapid decay and attack is set from the latter order, and the pre-assignment order of the other tone generation channels is set based on the sound output. In addition, the pre-assignment order of the effect-added channels corresponding to the tone generation channels during rapid decay and attack is also set from the later order. [D601] The pre-assign order N is set to "0", the pre-assign reverse order RN and the key depression order PN to be processed are set to "15". [D602] It is determined whether or not the key depression order PN to be processed is less than "0". If the key depression order PN to be processed is not less than "0", the process proceeds to the next Step D603, and is "0".
If it is less than this, the process proceeds to step D607.

[D603] The tone generation channel number GN is the tone generation channel number having the same pre-assigner key depression order PAPN [GN] as the key depression order PN to be processed. [D604] Pre-assigner rapid decay flag PACT [GN] of tone generation channel number GN or tone generation channel number
It is determined whether or not any of the GN pre-assigner truncate prohibition flags PAIT [GN] is "1". If any of the judgment objects is "1", the process proceeds to step D606, and if none of them is "1", the next step D6.
Go to 05.

[D605] First, the Nth preassigned tone generation channel number PASS [N] is set to the tone generation channel number GN. Next, the pre-assigner key depression order PN is decremented by "1", the pre-assign order N is incremented by "1", and the process returns to step D602. [D606] First, the tone generation channel number of the RN-th pre-assigned order whose pre-assigned order is the pre-assigned reverse order RN
Set PASS [RN] to the tone generation channel number GN. Next, the connection destination of the tone generation channel number corresponding to the tone generation channel number GN in the tone generation channel management map is the effect addition channel number EN, and the pre-assignment order is the pre-assignment reverse order RN plus 4 (RN
+4) Channel number with pre-assigned rank effect PESS [RN + 4]
Is set to the effect addition channel number EN. Further, the pre-assign key depression order PN and the pre-assign reverse order RN are decremented by "1" and the process returns to step D602.

[D607] The pre-sign order is "0".
To N minus 1 to a value obtained by subtracting 1 from the N-th pre-assigned order musical tone generation channel number PASS [N] is rearranged in ascending order of the pre-assigner pronunciation amount PLEV [GN] of the corresponding musical tone generation channel number GN. For example, PASS [0] = 1, PASS [1] = 3, PASS
[2] = 5, ..., PLEV [1] = 0080H, PLEV [3] =
0040H, PLEV [5] = 0000H, ... And N
= 3, PASS [0] = 5, PASS [1] = 3, PA
Set SS [2] = 1. Also, the number PACN of tone generation channels that can be assigned to pre-assigners is set to the pre-assignment rank N. [D608 to D613] As will be described below, the pre-assigned ranks of the effect-added channels that do not correspond to the tone generation channels during the rapid decay and attack are set based on the sound output.

[D608] The pre-sign rank N and the effect addition channel number EN are set to "0". [D609] It is determined whether the effect-added channel number EN is less than "20". This effect additional channel number EN
Is less than “20”, the process proceeds to the next step D610, and if not less than, the process proceeds to step D613. [D610] Pre-assigner rapid attenuation flag PECT [EN] of effect addition channel number EN or effect addition channel number
It is determined whether or not any of the EN truncation prohibition flags PEIT [EN] is "1". If either is “1”, the process proceeds to step D612, and both are “1”.
If not, the process proceeds to the next Step D611.

[D611] First, the N-th pre-assigned rank effect addition channel number PESS [N] is set to the effect addition channel number EN. Next, the pre-assignment rank N and the effect-added channel number EN are each incremented by "1" and the process returns to step D609. [D612] The effect-added channel number EN is incremented by "1" and the process returns to step D609. [D613] Nth pre-assigned rank effect-added channel number PESS [N] from the pre-assigned rank "0" to the value obtained by subtracting 1 from the pre-assigned rank N. Sort in ascending order of [EN].

[D614 to D627] As will be described below, the pre-assignment order of the effect addition channel connected to the tone generation channel being sounded should not be lower than the pre-assignment order of the connected tone generation channel. Reset. [D614] The pre-sign rank N is set to "0". [D615] It is determined whether the pre-assignment rank N exceeds the number of musical sound generation channels PACN that can be assigned to pre-assigners. If it does not exceed, the process proceeds to the next step D616, and if it does, the routine ends and the process proceeds to step D7. [D616] The tone generation channel number GN is defined as the connection destination tone generation channel number of the effect channel addition number corresponding to the Nth pre-assigned rank effect channel number PESS [N] in the effect channel management map.

[D617] It is determined whether the tone generation channel number GN is "99". "99" indicating a tone generation channel in which this tone generation channel number GN does not exist
If it is, it proceeds to step D620, and if it is not "99", it proceeds to the next step D618. [D618] Preassign order of tone generation channel number GN to Nth preassigned order tone generation channel number PASS
Obtained from [N], corresponding tone generation channel pre-assignment rank P
ASG. [D619] It is determined whether the pre-assigned rank N is less than the corresponding tone generation channel pre-assigned rank PASG. If it is less than, it proceeds to step D621, and if it is not less, it proceeds to next step D620. [D620] The presign rank N is incremented by "1" and the process returns to step D615.

[D621 to D627] As will be described below, the pre-assignment order of the effect-added channels is set to a larger order (post-order) so as not to be lower than the pre-assignment order of the connected tone generation channels. An effect-added channel that satisfies the above condition is selected from the lower ranks and is set as the rank. [D621] The substitution target rank CN is set to a value obtained by adding "1" to the preassign rank N. [D622] Cth in effect added channel management map
N Pre-assigned rank Effect added channel number The tone generation channel number GN is the tone generation channel number of the connection destination of the effect addition channel number corresponding to PESS [CN]. [D623] It is determined whether the tone generation channel number GN is "99". If the tone generation channel number GN is "99" indicating a tone generation channel that does not exist, the process proceeds to step D627, and if it is not "99", the process proceeds to step D624. [D624] Preassign order of tone generation channel number GN to CNth preassigned order tone generation channel number PASS
Obtained from [CN], target sound generation channel pre-assignment ranking
PASC.

[D625] It is determined whether the pre-assign rank N is lower than the target tone generation channel pre-assign rank PASC. If it is less than the next step D62
If not, the procedure advances to Step D627. [D626] The substitution target rank CN is incremented by "1" and the process returns to step D622. [D627] First, the pre-assigned ranks of the N-th pre-assigned rank effect-added channel number PESS [N] are incremented by "1" from the pre-assigned rank N to a value obtained by subtracting 1 from the substitution target rank CN. Channel number PESS
Let [CN] be the preassigned rank N.
For example, N = 3, CN = 5, PESS [3] = 7, PESS [4] = 8,
When PESS [5] = 9, PESS [3] = 9, PESS [4] =
7. PESS [5] = 8. Next, the preassigned rank N is incremented by "1". And step D61
Return to 9.

Envelope task (FIGS. 21 and 22) The envelope task starts execution when a timer event for the envelope task occurs, and sequentially updates the tone generation amount of each tone generation channel and effect-added channel, as well as the note status and A new target value and a new rate are calculated based on the envelope generation parameter and transferred to the tone generation channel of the tone generation circuit 26. The processing in each of steps E1 to E27 is as follows. [E1] Clear the envelope management map, set the variables occupied by this envelope task to the initial values, set the fifth task timer counter value TCNE [5] to "4", and set the fifth task time interval TCND [5 ] To “4”. Further, the timer processing request flag of the task number “5: envelope task” in the task management map is set to “1: request”. [E2] Set the request source event value NSET to "1" and make an event wait monitor call. When the envelope task timer event occurs, the process proceeds to the next step E3.

[E3] The wait event value of the task number "5: envelope task" in the task management map is set to "0", the first event occurrence flag is set to "0", and the envelope processing target number ECTN is set to "0". Set to ". Also, the processed flag of each effect-added channel number in the effect-added channel management map is set to "0",
The maximum sum of the output coefficient groups for each effect-added channel number is the maximum output coefficient sum ETWM. [E4] Lock the task. [E5] It is determined whether or not the processing wait flag 3 of the tone generation channel number corresponding to the envelope processing target number ECTN in the tone generation channel management map is "1: waiting for processing". If the process wait flag 3 is not "1", the process proceeds to step E9. If the process wait flag 3 is "1", the envelope process by this envelope task is unnecessary, and the process proceeds to the next step E6. [E6] The task lock is released. [E7] It is determined whether the envelope processing target number ECTN is less than "15". When the envelope processing target number ECTN is less than “15”, the next step E
8. If it is not less than "15", go to step E2.
Proceed to 7. [E8] The envelope processing target number ECTN is incremented by "1" and the process returns to step E4.

[E9] The part number of the tone generation channel number corresponding to the envelope processing target number ECTN in the tone generation channel management map is set as the envelope processing target part number EPNM. [E10] It is determined whether the continuous sound system flag of the envelope processing target part number EPNM in the part map is "1". If the continuous tone system flag is not "1", the process proceeds to the next step E11, and if it is "1", the process proceeds to step E20. [E11] It is determined whether the target value of the envelope channel number corresponding to the envelope processing target number ECTN in the envelope management map is "0" and the envelope level is "0". When the target value is "0" and the envelope level is "0", the sound generation has ended, so the routine proceeds to step E19, and when either is not "0", the routine proceeds to next step E12. [E12] The envelope level and rate of the envelope channel number corresponding to the envelope processing target number ECTN in the envelope management map are added to form a new envelope level and envelope level ELEN, and the phase number is incremented by "1". Also, the envelope level ELEN is written in the envelope level buffer corresponding to the connection destination effect added channel number of the tone generation channel number corresponding to the envelope processing target number ECTN in the tone generation channel management map.

[E13] It is determined whether or not the note status of the tone generation channel number corresponding to the envelope processing target number ECTN in the tone generation channel management map is "1: note on". If the note status is not "1", the process proceeds to the next step E14,
If it is "1", the process proceeds to step E15. [E14] Envelope processing corresponding to the note-off sounding state is performed. That is, the target value and rate of the envelope channel number corresponding to the envelope processing target number ECTN in the envelope management map is calculated and updated based on the note status being note-off and the envelope generation parameter group, and the target value and rate are also updated. It is transferred to the corresponding tone generation channel of the tone generation circuit 26. When the process is completed, the process proceeds to step E16. [E15] Envelope processing corresponding to the note-on tone generation state is performed. That is, the target value and rate of the envelope channel number corresponding to the envelope processing target number ECTN in the envelope management map is calculated and updated based on the note status of note-on and the embedding generation parameter, and the target value and rate are generated. Transfer to the corresponding tone generation channel of the circuit 26. When the processing is completed, the next step E
Proceed to 16.

[E16] It is determined whether or not the phase number of the envelope channel number corresponding to the envelope processing target number ECTN in the envelope management map exceeds the truncation prohibited phase number. If the phase number does not exceed the truncate prohibition phase number, the process proceeds to step E6, and the tone generation amount is not updated. If the phase number exceeds the truncate prohibition phase number, the process proceeds to step E17 to calculate the tone generation amount. [E17] The tone generation amount of the tone generation channel is calculated. The details of this processing will be described later in detail with reference to the flowchart of the calculation routine of the sound volume of the attenuated sound system in FIG. [E18] First, the sum of the output coefficient group of the effect addition channel number of the effect addition channel management map corresponding to the connection destination effect addition channel number of the tone generation channel number corresponding to the envelope processing target number ECTN in the tone generation channel management map is output. The sum of coefficients is ETWT. Next pronunciation EV
OL is multiplied by the output coefficient sum ETWT, and the multiplication result is divided by the output coefficient sum maximum value ETWM to obtain the sound generation amount EVOL. Further, the tone generation amount of the tone generation channel number corresponding to the envelope processing target number ECTN in the tone generation channel management map is updated to the tone generation amount EVOL, and the truncation prohibition flag is updated to "0". Further, the processed flag of the effect addition channel number of the effect addition channel management map corresponding to the connection destination effect addition channel number of the tone generation channel number corresponding to the envelope processing target number ECTN in the tone generation channel management map is set to “1”, Update the truncation prohibition flag to "0". When the processing is completed, the process proceeds to step E6.

[E19] The tone generation channel management map and the like are updated as follows. It is determined whether or not the connection destination effect addition channel number of the tone generation channel number corresponding to the envelope processing target number ECTN in the tone generation channel management map is "99". If it is "99", go to Step E6,
If it is not "99", proceed to the next step. The tone generation amount of the tone generation channel number corresponding to the envelope processing target number ECTN in the tone generation channel management map is set to "0", the truncation prohibition flag is set to "0",
Set the destination effect addition channel number to "99". In addition, the truncation prohibition flag of the effect addition channel number of the effect addition channel management map corresponding to the connection destination effect addition channel number of the tone generation channel number corresponding to the envelope processing target number ECTN in the tone generation channel management map is set to "0". To do. Then, the process proceeds to step E6.

[E20] The note status of the tone generation channel number corresponding to the envelope processing target number ECTN in the tone generation channel management map is not "1" and the envelope channel number corresponding to the envelope processing target number ECTN in the envelope management map is It is determined whether the target value is "0" and the envelope level is "0". The note status is not "1", the target value is "0", and the envelope level is "0".
If so, it means that the pronunciation has ended, so step E19.
Go to, note status is not "1", target value is not "0", or envelope level is "0".
If not, the process proceeds to the next step E21. [E21] The same process as step E12 is performed. [E22] The same judgment as in step E13 is made. If the note status to be judged is not "1", the process proceeds to the next step E23, and if it is "1", the process proceeds to step E26.

[E23] The same process as step E14 is performed. [E24] The same judgment as in step E16 is performed. If the phase number exceeds the truncate prohibition phase number, the process proceeds to the next step E25, and if not, the process proceeds to step E6. [E25] The tone generation amount of the tone generation channel is calculated. The details of this processing will be described later in detail with reference to the flowchart of the sounding amount calculation routine of the continuous tone system in FIG. When the processing is completed, the process proceeds to step E18. [E26] The same process as step E15 is performed. When the processing is completed, the process proceeds to step E24. [E27] The effect addition channel management map is updated. The details of this processing will be described later in detail with reference to the flowchart of FIG. When the processing ends, step E2
Return to.

Routine for calculating the sound volume of the attenuated sound system (see FIG. 2
3) In the calculation routine of the sound volume of the attenuated sound system in step E17, the sound volume of the sound sound of the attenuated sound system in the tone generation channel is calculated based on the note status, the envelope level, the rate and the phase number. If the note status of the tone generation channel is the note-on tone generation state, the note-on state is maintained until the shortest key depression phase number and the key depression continuation phase number. The processing of steps E1701 to E1713 is as follows. [E1701] First, the shortest key depression phase number FPSN is set to "100" and the key depression continuation phase number FPCN is set to "50". Next, the rate of the envelope channel number corresponding to the envelope processing target number ECTN in the envelope management map is set as the rate ERTE, and the phase number is set as the phase number FNOW. [E1702] It is determined whether or not the rate ERTE is less than “0”. If the rate ERTE is less than "0", the process proceeds to the next step E1703, and if it is not less than "0", the process proceeds to step E1704.

[E1703] Let the absolute value of the rate ERTE be the rate ERTE. This is a process for converting the decaying rate to a positive value because the rate is a negative value. When the process is completed, the process advances to step E1705. [E1704] The rate ERTE is set to "1", and the process proceeds to step E1705. [E1705] Envelope level ELEN rate ERTE
Divide by and the result is FVCN, which is the number of sound continuation phases. [E1706] The same determination process as in step E13 is performed. The note status of the judgment target is "1: note on"
If not, proceed to the next Step E1707, and set to “1”
When it is, it progresses to step E1711. [E1707] Number of pronunciation continuation phases FVCN is "400"
It is determined whether it is less than. Number of this pronunciation continuation phase
If FVCN is less than "400", the next step E1
If it is not less than "400", the process proceeds to step E1709. [E1708] First, the envelope level ELEN is multiplied by the sound production continuation phase number FVCN. Then, the multiplication result is divided by "1600", and the tone amount EVOL is set, and this routine is ended.

[E1709] Number of key-depression continuation phases FPCN
Is set to "400". [E1710] First, the value obtained by multiplying the rate ERTE by the key depression continuing phase number FPCN is divided by “2” is subtracted from the envelope level ELEN. Then, the value obtained by multiplying the subtraction result by the key-depression continuation phase number FPCN is divided by "800", and this tone generation amount EVOL is ended. [E1711] It is determined whether or not the phase number FNOW is less than the value obtained by subtracting the key-depression continuation phase number FPCN from the shortest key-depression phase number FPSN. If the phase number FNOW is less than that value, the procedure goes to the next step E1712, and if it is not less than that value, the procedure goes to step E1713. [E1712] The value obtained by subtracting the phase number FNOW from the shortest key depression phase number FPSN is set as the key depression continuation phase number FPCN. [E1713] It is determined whether the number FVCN of continuous tone generation phases is less than the number FFPCN of continuous key depression phases. If it is less than, it proceeds to step E1708, and if it is not less than, it proceeds to step E1710.

Routine amount calculation routine (FIG. 2)
4) In the routine for calculating the amount of sound of the continuous tone system in step E25, the amount of sound of the tone of the continuous tone system in the tone generation channel is calculated by a process according to the routine for calculating the amount of sound of the decay tone system. Each step E2501 to E2512
The processing in is as follows. [E2501] The same process as step E1701 is performed. [E2502] The same determination process as in step E1706 is performed. If the note status to be judged is not "1: note on", the flow advances to step E2503,
If it is “1”, the process proceeds to step E2510. [E2503] to [E2506] Step [E170
2) to [E1705] are performed. [E2507] The same determination process as in step E1707 is performed. Number of pronunciation continuation phases to be judged FVCN is “40
If it is less than 0 ", the process proceeds to the next step E2508, and if it is not less than" 400 ", step E2509.
Proceed to.

[E2508] First, the envelope level ELEN is multiplied by the sound production continuation phase number FVCN. Then, the multiplication result is divided by "1600", and the tone amount EVOL is set, and this routine is ended. [E2509] First, the value obtained by multiplying the rate ERTE by “200” is subtracted from the envelope level ELEN. Then, the subtraction result is divided by "2" to set the tone generation amount EVOL, and this routine ends. [E2510] The same determination process as in step E1711 is performed. If the phase number FNOW to be judged is less than the value obtained by subtracting the key-depression continuation phase number FPCN from the shortest key-depression phase number FPSN, the process proceeds to the next step E2511, and if it is not less than that value, the process proceeds to step E2512. [E2511] First, the value obtained by subtracting the phase number FNOW from the shortest key depression phase number FPSN is the key depression continuous phase number FP.
Let it be CN. Then, a value obtained by multiplying the key-depression continuation phase number FPCN by the envelope level ELEN is divided by "800" to obtain a sound generation amount EVOL. This routine ends. [E2512] The value obtained by multiplying the key-depression continuation phase number FPCN by the envelope level ELEN is divided by "800", and this routine is ended with the sound generation amount EVOL.

Update routine of effect added channel management map (FIG. 25) In the update routine of the effect added channel management map in step E27, the amount of musical tones accumulated in the effect added channel is calculated to update the effect added channel management map. To do. The processing in steps E2701 to E2714 is as follows. [E2701] The envelope processing target number ECTN is set to "0". [E2702 to E2705] The connection state with the tone generation channel and the tone generation state of the corresponding tone generation channel are determined, and the process proceeds to each process. In addition, preparation is made to calculate the tone generation amount of the effect-added channel that is not substantially connected to the tone generation channel. [E2702] First, the sum of the output coefficient groups of the effect addition channel numbers corresponding to the envelope processing target number ECTN in the effect addition channel management map is the output coefficient sum ETWT, and the maximum elapsed phase number is the maximum elapsed phase number EFMN. Next, the output coefficient of the original sound of the output coefficient group of the effect-added channel number is subtracted from the total output coefficient ETWT. Further, the elapsed phase number ELFN is set to "1" and the pronunciation amount EEVL is set to "0".

[E2703] It is determined whether the processed flag of the effect addition channel number corresponding to the envelope processing target number ECTN of the effect addition channel management map is "0". If the processed flag is "0", the process proceeds to the next step E2704, and if it is not "0", the process proceeds to step E2712. [E2704] It is determined whether or not both the rapid decay flag and the truncation prohibition flag of the effect addition channel number corresponding to the envelope processing target number ECTN of the effect addition channel management map are “0”. If both are "0", the process proceeds to the next step E2705, and if either is not "0", the tone generation amount updating process is unnecessary, so the process proceeds to step E2710. [E2705] Preparation is made as follows to calculate the sound output of an effect-added channel that is not substantially connected to the tone generation channel. First, "0" is written in the envelope level buffer corresponding to the envelope processing target number ECTN. Next, the read pointer of the envelope level buffer corresponding to the envelope processing target number ECTN is set immediately after the write pointer. In addition, the connected tone generation channel number of the effect addition channel number corresponding to the envelope processing target number ECTN of the effect addition channel management map is set to "9.
Update to 9 ".

[E2706 to E2709] Envelope levels are sequentially read from the envelope level buffer, and the tone generation amount after that envelope level is accumulated to calculate the tone generation amount accumulated in the effect addition channel. [E2706] First, the envelope level read from the envelope level buffer corresponding to the envelope processing target number ECTN is set as the envelope level ELEN, and the read pointer is further set to prepare for reading the next and previous envelope levels. Next, a value obtained by multiplying the total output coefficient ETWT by the envelope level ELEN is added to the pronunciation amount EEVL. [E2707] It is determined whether the elapsed phase number ELFN is less than the maximum elapsed phase number EFMN. If it is less than this, it proceeds to step E2709, and if it is not less than it, it proceeds to next step E2708. [E2708] First, the pronunciation amount EEVL is output coefficient sum maximum value.
Divide by ETWM, then divide by "800", and sound volume EEVL
And Next, the pronunciation amount of the effect addition channel number corresponding to the envelope processing target number ECTN in the effect addition channel management map is updated to the pronunciation amount EEVL, and step E271.
Go to 0.

[E2709] First, from the output coefficient sum ETWT, the elapsed phase number of the effect sound of the output coefficient group of the effect added channel number corresponding to the envelope processing target number ECTN in the effect added channel management map is the elapsed phase number ELFN.
Subtract the output coefficient of. Next, the elapsed phase number ELFN is incremented by "1" and the process returns to step E2706. [E2710] Envelope processing target number ECTN is "1"
It is determined whether or not it is less than 9 ". If it is less than 9, proceed to the next step E2711, and if it is not less, this routine is finished and returns to step E2. [E2711] Envelope processing target number ECTN It increments by "1" and returns to step E2702.

[E2712 to E2714] Preparation is made to calculate the tone generation amount of the effect addition channel which is connected to the tone generation channel and whose tone generation amount of the corresponding tone generation channel is updated. [E2712] The phase number FNOW is the phase number of the envelope channel number of the envelope management map corresponding to the connected tone generation channel number of the effect addition channel number corresponding to the envelope processing target number ECTN in the effect addition channel management map. The read pointer of the envelope level buffer corresponding to the envelope processing target number ECTN is set immediately after the write pointer. [E2713, E2714] The sound amount calculation processing range is limited to the range in which the data of the envelope level buffer is written as follows. Determine whether the maximum elapsed phase number EFMN exceeds the phase number FNOW, and if not, set the maximum elapsed phase number EFMN to the phase number
Set to FNOW. When the processing ends, step E2706
Proceed to.

Manipulator Data Receiving Task When a manipulator data receiving task occurs, the manipulator data receiving task reads manipulator data from the MIDI circuit 20 and stores it in a predetermined area. [G1] The MIDI channel map, the part map, and the variables occupied by this operator data reception task are set to initial values. [G2] The request source event value NSET is set to "1", the initialization completion flag is set to "1", and an event wait monitor call is performed. When an operator data reception event occurs, the process proceeds to the next step G3. [G3] Task number “6: in task management map”
Wait event value of "Operator data reception task" is "0"
Then, the first event occurrence flag is set to "0".

[G4] The operator data is read from the MIDI circuit and the corresponding data in the MIDI channel map and part map is updated. For example, regarding the data on the tone color number, the part number of the MIDI channel number corresponding to the MIDI channel number included in the data is checked in the MIDI channel map, and the tone color number of the part number corresponding to the part number on the part map is related to the tone color number. The data is updated, and the truncate prohibition phase number and the continuous tone system flag corresponding to the tone color number are read from the ROM 23 and stored in the corresponding area. When the corresponding process ends, the process returns to step G2.

Multitasking Processing The electronic musical instrument of this embodiment uses multitasking for executing each task. Below, an outline of operations relating to this multitasking will be described. (1) Initialization When the power is turned on, after the processing by the monitor program reset routine ZA (steps ZA1 to ZA3), the key data receiving task (routine A), the main assigner task (routine B), the sounding task (routine C) , Pre-assigner task (routine D), envelope task (routine E) and manipulator data receiving task (routine G) are sequentially performed in accordance with the task priority order (steps A1, A2, steps B1, B2,
Steps C1, C2, Steps D1, D2, Step E
1, E2, steps G1, G2).

(2) Sound Generation Processing by Received Note-on Message The note-on message is received via the MIDI bus and M
When the IDI circuit 20 receives an interrupt, the key data reception interrupt processing routine ZE of the monitor program is started.

(2-1) Since the key data reception interrupt processing routine ZE is waiting for a key data reception event (steps ZE1 and ZE3), the status of the task number "1: key data reception task" in the task management map Is set to "0: Run" (step ZE
5). Next, the key data reception task is executed (steps A2 to A7), the performance information is read from the MIDI circuit, the note map is updated based on the performance information, and if the note is on, an event occurrence monitor call is performed. (Step A7).

(2-2) In the event generation monitor call routine ZC of the monitor program, the task number "2: Main assigner task" in the task management map
The first event occurrence flag is set to "1" (step ZC1), and the status is set to "1: ready" (steps ZC2 and ZC3). Since the task priority of the key data reception task is higher than the task priority of the main assigner task, the key data reception task is restarted (step ZC4), and an event wait monitor call is made in this key data reception task ( Step A2).

(2-3) In the event waiting monitor call routine ZB of the monitor program, it is checked whether a key data reception event has occurred (step Z).
B1). As a result of the examination, the next key data reception event has not occurred yet, so the status of the task number "1: key data reception task" in the task management map is set to "2: wait" (step ZB2), and the task Examine the management map (step ZB3). As a result of checking this task management map, the status is "1: ready"
Since the task number of the highest priority task of "2: Main Assigner Task" is "2: Main Assigner Task", the status of this task number "2: Main Assigner Task" is set to "0: Run" (step ZB4). The main assigner task is executed (step ZB5). In this main assigner task, note numbers NTNM and the like are written in the tone generation channel management map (steps B2 to B5). Next, an event occurrence monitor call is made (step B6).

(2-4) In the event generation monitor call routine ZC of the monitor program, the second event generation flag of the task number "3: sounding task" in the task management map is set to "1" and the status is set to "1". : Ready ”. Since the task priority of the main assigner task is higher than the task priority of the pronunciation task, restart the main assigner task,
In this main assigner task, the target assign order is incremented by "1" to update to the next assign order (step B7), and an event wait monitor call is made (step B2).

(2-5) It is checked whether or not an assignment request event has occurred in the monitor call event waiting monitor call routine ZB of the monitor program. As a result of the examination, since the next assign request event has not yet occurred, the status of the task number “2: main assigner task” in the task management map is set to “2: wait” and the task management map is examined. As a result of checking the task management map, the task number of the highest priority task whose status is "1: ready" is "3: sound task",
The status of the task number “3: pronunciation task” is set to “0: run” and the pronunciation task is executed. In this tone generation task, various parameters relating to the tone generation are calculated and set based on the note number NTNM written in the tone generation channel management map and the start of tone generation is instructed (steps C2-C25). Next, an event wait monitor call is made (step C2).

(2-6) It is checked in the event waiting monitor call routine ZB of the monitor program whether or not a tone generation request event has occurred. As a result of the examination, since the next pronunciation request event has not occurred yet, the status of the task number “3: pronunciation task” in the task management map is set to “2: wait” and the task management map is examined. As a result of checking the task management map, if the statuses of all the task numbers are “2: wait”, the task sleeps.

(3) When the corresponding timer event occurs, the pre-signer task (routine D) updates the assignment order based on the tone generation amount of the tone generation channel management map (steps D2 to D11). Next, an event wait monitor call is made (step D2).

(4) When the corresponding timer event occurs, the envelope task (routine E) generates the tone amount of the tone generation channel management map and the envelope of the envelope management map based on the note status, the tone generation channel management map and the envelope management map. The level and the like are updated (steps E2 to E27). Next, an event wait monitor call is made (step E
2).

As described above, in the electronic musical instrument of this embodiment, the tone generation channel to which a new tone is to be assigned is being rapidly attenuated for assigning the tone generation, or during a so-called attack in which a predetermined time has not elapsed from the start of tone generation. The tone generation channels excluding the tone generation channels are selected as the selection targets. Also, for effect addition channels to which new musical tones are assigned, the effect addition channels corresponding to the tone generation channels that are being rapidly attenuated for sounding assignment or during so-called attack in which a predetermined time has not elapsed since the start of sounding are selected. The target is selected from them. It should be noted that the tone generation channels to be selected are set in the selection order based on the sound output of the tone generation channels, and the effect addition channels are selected based on the sound output amount of the effect addition channels and the selection order of the corresponding tone generation channels. The ranking is set.

Here, in the present embodiment, the tone generation amount of the tone generation channel is the tone generation amount output from the connected effect addition channel, and is calculated as follows. First, the sound volume based on the musical tones predicted to be generated in the musical sound generation channel after the calculation of the sound volume is calculated based on the envelope level and rate, and then the sound volume corresponds to the addition of the acoustic effect in the effect addition channel. I am correcting it. The tone generation amount of the effect addition channel is the tone generation amount of the musical sound accumulated in the effect addition channel, and is calculated based on the envelope level before the calculation time of the tone generation amount. When setting the selection order of the effect-added channels, do not set the selection order earlier than the selection order of the corresponding tone generation channel.

Various Modifications In order to simplify the processing, the tone generation amount of the tone generation channel and the tone generation amount of the effect addition channel may be the tone generation amount output from the effect addition channel. In this case, the order of selecting the effect-added channels will not be earlier than the order of selecting the corresponding tone-generating channels.
In the preassign order setting routine, step D61
When the processes of 4 to D627 are omitted and the process of step D613 is completed, the pre-assign order setting routine is completed. Specifically, the sound production amount is calculated as follows.

The tone generation amount of the tone generation channel is divided by "2" by adding the tone generation amount of the tone generation channel calculated in the embodiment to the tone generation amount of the connected effect-added channel calculated in the embodiment. Set to the value. It should be noted that the tone generation amount of the tone generation channel that has finished tone generation and the tone generation channel that is not connected to the effect addition channel is "0". Set the sound volume of the effect-added channel connected to the tone generation channel to the same sound volume as that of the connected music-tone generation channel, and terminate the effect-added channels and sound generation that are not connected to the tone generation channel. The tone generation amount of the effect addition channel connected to the tone generation channel is set to a value obtained by dividing the tone generation amount of the tone stored in the effect addition channel calculated in the embodiment by "2".

Further, the following processing may be performed. First, a tone generation channel is selected based on the sound output of the tone generation channel. When the tone generation amount of the tone generation channel whose assignment order is "0" is "0", the effect addition channel whose corresponding tone generation channel has finished generating sound and the effect addition channel not connected to the tone generation channel Select the effect-added channel that produces the least amount of sound. If the tone generation amount of the tone generation channel having the assignment order of “0” is not “0”, the effect addition channel corresponding to the tone generation channel having the assignment order of “0” and the corresponding tone generation channel have finished producing sound. Select the effect-added channel that produces the least amount of sound among the effect-added channels that are present and the effect-added channels that are not connected to the tone generation channel. The same applies to subsequent assignment orders. However, the effect-added channels that have already been selected are excluded.

Further, this processing may be simplified as follows. First, the tone generation channel is selected based on the sound output of the tone generation channel. Regarding the effect-added channel, first, the effect-added channel whose corresponding tone generation channel has finished sounding,
And an effect-added channel that is not connected to the tone generation channel is selected based on the sound output of the effect-added channel.
Next, the effect-added channels whose corresponding tone generation channels have not finished sounding are selected in the same order as the corresponding tone generation channels.

The tone generation amount of the tone generation channel may be calculated by various methods proposed in Japanese Patent Laid-Open No. 1-1649496. For example, in step E2512 of the processing routine of the sound volume of the continuous tone system, the sound volume of the note-on sound state at step E2512 is simulated for a predetermined period,
Alternatively, it is calculated as follows. The ROM 23 stores in advance the tone generation amount in each phase number in correspondence with the tone color, tone pitch, velocity, and the like. The total amount of sound generation for a corresponding tone color, pitch, velocity, etc. for a predetermined period is set as the sound generation amount.

For the tone generation channel in the note-on tone generation state, the tone generation amount is calculated only for the note-on tone generation period for simplification of processing.
The tone generation amount after note-off may be calculated according to the processing of the note-off tone generation state, and may be added to the tone generation amount calculated for the period of the note-on tone generation state. Further, this sound generation amount may be calculated based on the pseudo envelope level, the envelope level detected from the amplitude level of the sound signal to be sounded, and the like. Further, in the embodiment, the sound generation amount until the end of sound generation is calculated, but the sound generation amount until the envelope level reaches a predetermined level may be calculated,
The predetermined level may be set according to the tone color and tone pitch.

Further, in calculating the amount of sound generation, weighting may be performed according to the envelope level. For example, in steps E17 and E25, a coefficient is multiplied according to the envelope level. Envelope level EL as a coefficient
If EN is less than "4000H", "1/4", and envelope level ELEN is "4000H" to "8000".
If it is less than H, it is "1/2", if the envelope level ELEN is from "8000H" to less than "C000H", it is "3/4", and the envelope level ELEN is "C0.
When it is 00H or more, it is set to "1".

Further, the process of correcting the tone generation amount of the tone generation channel in response to the addition of the acoustic effect in the effect addition channel may be simplified. For example, a correction coefficient is set in advance that is similar to the correction when the effect is added according to the effect addition mode (type of effect, degree of effect, effector control parameter, etc., or an appropriate combination thereof). The correction amount is stored, and the correction coefficient is multiplied by the correction coefficient in accordance with the effect addition mode to perform correction.

Further, in calculating and / or comparing the pronunciation amount of the tone generation channel, the pronunciation amount is set so that the pronunciation of the musical tone having high usefulness in performance expression is continued preferentially over the musical tone having low usefulness. You may make it correct according to the usefulness of a musical sound. For example, when the usefulness of a musical tone changes based on the degree of effect on the musical tone, a correction coefficient corresponding to the change in usefulness of the musical tone based on the degree of the effect is set and stored in advance. When calculating the amount, the tone amount calculated in the embodiment is multiplied by a correction coefficient corresponding to the degree of the effect on the musical sound. In this case, the parameters that change the usefulness of the musical sound are
In addition to the degree of effect described above, the type of effect, the type of effect and the degree of effect, the effector control parameter, the tone color, the pitch, etc., or an appropriate combination thereof may be used.

Further, it is preferable to correct the following musical tones as highly useful musical tones so as to increase the pronunciation amount. In other words, in the case of playing a musical tone in the pitch or range that is a low-pitched tone, the highest tone of the melody part, a musical tone of a solo tone, and performance information from the automatic performance device and performance information from the keyboard. A musical tone based on performance information that is important in the performance (for example, a musical tone of a part used on the keyboard), a main tone among them when the musical tone is composed of multiple tones such as partial tones, or the note status is on. In the case where it is desired to further emphasize a musical sound that is "1" or a musical sound whose sostenuto status is ON, the musical sound to be warped and the like is corrected as a highly useful musical sound so that its pronunciation amount is increased.

When the so-called continuous hitting process is performed, the tone generation channels having the continuous hitting relationship may be considered to have low usefulness, and the assignment order may be increased. For example, after the processing of step D5 of the pre-assigner task is completed, a tone generation channel in a continuous hitting relationship that produces musical tones with the same pitch in the same part is detected, and the pre-assigner pronunciation level PLEV [GN of the tone generation channel number GN is detected. Is corrected as follows, and then the process proceeds to step D6. That is,
For the tone generation channel whose note status is Note-on and which has a continuous hit relationship with the tone generation channel whose note status is Note-on, change the pre-assigner pronunciation amount PLEV [GN] of the tone generation channel number GN to 1/10 of that value. Make a correction. If the note statuses of all the tone generation channels that are in the continuous hit relationship are note-off, the tone generation channels that are in the continuous hit relationship except the pre-assigner pronunciation amount PLEV [GN] of the largest tone generation channel number GN are Correction is performed to change the pre-assigner pronunciation amount PLEV [GN] of the tone generation channel number GN to 1/10 of that value.

Further, the correction of the tone generation amount according to the degree of consonance disclosed in Japanese Patent Laid-Open No. 64-42695 may be performed in accordance with the continuous hitting process. Further, instead of the process of prioritizing the derived sound over the key depression sound, which is disclosed in Japanese Patent Publication No. 62-52319, the amount of the derived sound is corrected according to the usefulness of the derived sound (for example, a coefficient is multiplied by 1/10). ) May be used to balance the evaluation of the derived sound and the key depression sound. Further, the tone generation amount of the effect addition channel may be corrected based on the usefulness of the tone signal during the effect addition, the usefulness of the effect addition mode, and the like.

When a new tone is assigned, if the tone generation channel to which the tone is assigned is being sounded, a new tone is assigned to the tone generation channel and the previous tone generation is continued on the tone generation channel. In this case, it may be determined in advance which one has less discomfort in performance expression, and if it is less discomfort to continue the previous sound generation, a new musical tone may not be assigned. To do this, for example, step B5 of the Main Assigner task.
The following processing is performed prior to the processing of. First, a new tone generation amount (including the tone generation amount added with the addition of an effect) is calculated according to the embodiment. Next, the amount of sound generation of the new musical tone is compared with the amount of sound generation of the assigned tone generation channel. If the volume of the new musical sound is large, step B5
If not, go back to step B2.

If the user wants to give priority to a new pronunciation,
It is also possible to correct the tone generation amount of a new musical tone by multiplying it by a tone generation priority coefficient having a value greater than 1. On the contrary, when it is desired to suppress a new sound, the sound volume of the new musical sound may be corrected by multiplying the sound suppression coefficient of a value smaller than 1. Further, it is preferable to correct the pronunciation amount based on the usefulness in expression of performance.

Further, the musical sound of the musical tone generation channel to which no effect is added may be directly output without passing through the effect added channel. For example, the effect addition channel number “21” is prepared in the effect addition channel management map, and
The amount of sound generation is set to "0" and the total sum of output coefficients is set to "1". Here, the effect-added channel with the effect-added channel management number “21” is virtual. In addition, a target assignment order for effect-added channels is separately provided. Prior to the processing of step B5 of the main assigner task, it is determined whether or not the effect is added based on the part number PTNM or the like. If it is determined that the sound does not have an effect added, step B5
The tone generation channel number MGCH to be processed is set in accordance with the above process, and the note number and the like of the tone generation channel management map are set. In addition, the connection destination effect addition channel number is set to "21". Then, the process proceeds to step B6. The effect-added channel management map is not updated. If it is determined that the sound is a tone to which an effect is added, the process proceeds to step B5. The target assignment order for the effect-added channel is incremented by "1". When the tone signal exchange apparatus is instructed to connect the tone generation channel and the effect addition channel "21", the tone generation channel is disconnected from the previous effect addition channel and then the tone generation circuit is set to the tone generation circuit. 26 output. Therefore, the input of a new musical tone signal to the effect-added channel that was previously connected to the designated musical tone generation channel is blocked, but the addition of the effect to the already input musical tone is continued. At the same time, all the tone generation channels are added to the effect addition channel "2
Can be connected to 1 ".

In addition, when assigning a new musical tone, if the effect-added channel of the assignee is adding effects,
Which one has less discomfort in performance expression between adding an effect to a new musical sound and adding no effect to a new musical sound (still adding the previous effect on the effect addition channel of the assignee) If there is less discomfort if you do not add the effect to the new musical sound,
The effect may not be added to the new musical sound. For example, in the case of making a judgment based on the sum of the sound production amount to which the sense of discomfort is added in the effect addition channel and the sound production amount accumulated in the effect addition channel, the following is performed. The tone generation amount added in the effect addition channel is a value obtained by subtracting the tone generation amount before the change from the tone generation amount after the change in step E18 of the envelope task. First, the following process is added to the process of step B5 of the main assigner task. Compare the amount of sound added in the effect addition channel during sounding of a new musical tone to the sum of the amount of sound added in the effect addition channel of the allocation destination and the amount of sound accumulated in the effect addition channel. .. When the tone generation amount added by the effect addition channel is large during the generation of a new musical tone, the process of step B5 is performed as it is. If it is not large, the processing according to the processing relating to the musical tone of the musical tone generating channel to which the above effect is not added is performed.

Further, in order to give priority to the addition of an effect to a new musical sound, the sound production amount added in the effect addition channel during the sounding of a new musical sound is multiplied by a sounding priority coefficient having a value greater than 1. You may correct it. On the contrary, in order to suppress the addition of the effect to the new musical sound, the amount of sound added in the effect addition channel during the sounding of the new musical sound is corrected by multiplying by the sounding suppression coefficient of 1 or the like. May be. In addition, each pronunciation amount may be corrected based on the usefulness in performance expression. In the case of performing the above-described processing, the assignment order of the effect addition channels may be set based on the sum of the sound production amount added by the effect addition channel and the sound production amount accumulated in the effect addition channel. Further, the assignment order of the effect-added channels may be set by comparing with the usefulness or the like set based on the type of effect instead of the sound generation amount. Further, in the case where the effect is not added to the new musical sound, the effect may be added using the effect addition channel when the effect addition in any one of the effect addition channels is finished thereafter.

If the effect being added in the assignable effect-adding channel and the effect added to the new musical tone are the same or different in the allowable range, the effect-adding channel may be shared. In this case, the addition of the effect being added in the effect addition channel continues. Further, the output of the effect addition channel may be output via the effect addition device for adding the common effect so that the common effect is added to all the musical tones. Also, in order to add a common effect to multiple parts, only the output of the effect addition channel connected to the tone generation channel to which the musical sounds of those parts are assigned is passed through the effect addition device for adding the common effect. You may make it output it. Note that it is preferable to further correct the tone generation amount of the tone generation channel and / or the effect addition channel in accordance with the effect added additionally.

In the above-mentioned embodiment, the truncate prohibition phase number is set as the phase number at which the attack period ends. You may change the truncation prohibition phase number. For example, a decay period may be included.

The tone generation continuation phase number FVCN of the note-on tone generation state in the calculation of the tone generation amount changes as follows when the note-on tone generation state continues. In other words, the number FVCN of the continuation pronunciation phase is the shortest key depression phase number FPSN.
To the number of continuous key depression phases
When FPCN is reached, it keeps that value. In this transition, the reduction amount may be changed according to the progress of the phase. Shortest key depression phase number FP in the calculation of this pronunciation
The SN and the key-depression continuation phase number FPCN may be appropriately set and changed according to the tempo of the performance, the musical idea, and the like.

Further, in order to simplify the rearrangement process based on the amount of sound generation, the tone generation channels for which sound generation has ended may be set to a lower order of assignment prior to the rearrangement process. For example, prior to the processing of steps D602 to D606 of the preassign order setting routine, the tone generation channel numbers of the tone generation channels whose sound generation has ended are sequentially set to the Nth preassigned tone generation channel number PASS [N]. To do.

Further, in order to simplify the assigning order setting process based on the sound generation amount, the assigning order of the tone generation channels whose sound generation amount is equal to or lower than a predetermined value is set to the key pressing order, the tone generation channel number order, and the predetermined value or less. You may set it in the order that it became.

Further, in order to simplify the processing, the assigning order may be set based only on the pre-assigner sound level. For example, preassign order setting routine D
In 601 to D607, pre-assigner pronunciation level PLEV [GN]
Only the process of setting the Nth preassigned tone generation channel number PASS [N] is performed in ascending order. In this case, the order of key depression is desirable as the order of selection of the tone generation channels during rapid decay, so it is preferable to add "FFF0H" to the value of the key depression as the sound generation amount of the tone generation channels during rapid decay.

MODIFIED EXAMPLE 1 A specific example in which the key pressing order is used as the evaluation reference instead of using the tone generation amount as the evaluation reference as in the above-described embodiment will be described below. In this case, the effect added by the effect-added channel is converted into the delay time and used as the evaluation reference of the effect-added channel. The difference from the above-described embodiment will be described. In this modified example 1, the tone generation amount of the tone generation channel is calculated as follows. That is, step C of the pronunciation task
In 16, the tone generation amount is set to “8000H” as the number of phases corresponding to the delay time in the effect-added channel at the connection destination.
Set to the value obtained by adding. In the envelope task, the tone generation amount is decremented by "1" until the tone generation amount becomes "0" except for the tone generation channel which is being rapidly attenuated.

Further, in this modification 1, the tone generation amount of the effect-added channel is calculated as follows. Step C of pronunciation task
At 16, the tone generation amount is set to the number of phases corresponding to the delay time in the effect addition channel. In the envelope task, the sound generation amount of the effect addition channel connected to the tone generation channel whose sound generation is terminated or the effect addition channel not connected to the tone generation channel is decremented by "1" until it reaches "0". To do. Here, the number of phases corresponding to the delay time in the effect-added channel is calculated as follows. The output coefficients are sequentially accumulated from the maximum number of elapsed phases toward the smaller number of elapsed phases (in other words, the delay time is short), and the accumulated value is 0.
The number of elapsed phases exceeding 3 is the number of phases to be obtained. The total sum of the envelope levels of the musical tones output after the number of phases corresponding to the delay time in the effect-added channel calculated in this manner is about 30% of the envelope level of the inputted musical tones. Note that the calculation process may be simplified by setting the number of phases to be obtained to the maximum value of the number of elapsed phases having an output coefficient of which the output coefficient is 0.2 or more.

In the first modification, the selection order of the tone generation channels may be based on the key pressing order in the embodiment. Further, in this modification 1, the key release order, the pronunciation ending order,
The processing may be appropriately changed and applied based on the remaining pronunciation time.

Modified Example 2 A case will be described below in which an envelope level is used as an evaluation reference in an electronic musical instrument which produces a musical sound of a damped sound system. First, in the second modification, the tone generation amount of the tone generation channel is calculated as follows. The tone level of the tone generation channel is set to a value obtained by multiplying the envelope level by the output coefficient of the original tone and dividing it by "2". It should be noted that this envelope level may be weighted based on the note-on sounding state. In the second modification, the sound output amount of the effect-added channel is calculated as follows.
The envelope levels are sequentially read from the envelope level buffer, the values obtained by multiplying the read envelope levels by the output coefficients are accumulated, and the values are divided by "800" to obtain the tone generation amount.

When this modified example 2 is applied to an electronic musical instrument which generates a continuous tone type musical tone in place of the above-mentioned attenuated tone type system,
The tone generation amount of the tone generation channel is calculated as described above for the tone-off tone-like tone, and for the note-on tone-like tone, the sum of the output coefficients and the correction coefficient (greater than 1 are added to the envelope level. It is good to calculate by multiplying by (value). It should be noted that the above-described embodiment, the first modification, and the second modification may be appropriately combined.

Further, according to the present invention, in the musical tone generating circuit in the embodiment or the modified example, a single musical tone is composed of a plurality of constituent sounds, and the output of the musical sound generating channel for generating each constituent sound is made into those constituent sounds. The present invention can also be applied to a case where a sound effect is added to a common effect addition channel and a processing such as sound generation is performed in units of musical sound.

In this case, at the time of comparing the sound amounts in the selection of the allocation target, the sound amount of the tone generation channel is determined by the sum of the sound amounts of the constituent sounds forming the same musical sound or the importance of each constituent sound. The weighted sum of the pronunciation amounts, the maximum pronunciation amount, or the pronunciation amounts of the constituent sounds of high importance are used. The instruction to start the pronunciation of a musical tone is given in units of musical tone when all the component sounds are ready. In this case, since the number of tone generation channels is handled in units of tone, it is substantially less than the number of effect-added channels.

Further, in consideration of the difference in sounding mode between parts, the reserve processing is performed based on the method proposed in Japanese Patent Laid-Open No. 64-19393 of the present applicant, and at the same time, the tone generation channels exceeding the number of reserves are generated. The present invention may be applied to the selection.

The effect to be added in the effect addition channel may be changed when the note-off sound is produced, as proposed in Japanese Patent Laid-Open No. 2-110500. When changing the effect to be added, the output coefficient or the like may be changed correspondingly.

In the above embodiment, the case where the reverb effect is added in the effect addition channel has been described.
The present invention is not limited to this, and can be applied to the case of adding another acoustic effect or the case of adding a plurality of acoustic effects in combination.

Further, in the present invention, the assigning order may be set by setting the link as in the technique disclosed in Japanese Patent Laid-Open No. 64-19393. Further, although the multi-timbre electronic musical instrument has been described in the above-mentioned embodiments, it goes without saying that the present invention can be applied to an electronic musical instrument which produces a musical sound of a single tone color. Further, although the present embodiment is based on multitask processing, it may be carried out by single task processing.

Further, in the present embodiment, the so-called pre-assignment processing in which the assigning order is set in advance and selected in accordance with the set assigning order is used. The tone generation channel and the effect addition channel may be selected according to a general process of selecting the tone generation channel to be assigned. In this case, the effect-added channel may be selected as follows. First, an effect addition channel that is not connected to the tone generation channel or an effect addition channel in which the sound generation of the connected tone generation channel is completed is selected. If there is no such effect-added channel, the effect-added channel is selected by the method of the embodiment. Instead of the effect addition channel for which the addition of the effect has been completed, an effect addition channel whose sound generation amount is equal to or less than a predetermined value may be used. The tone generation channel may be similarly selected. First, a tone generation channel that has finished sounding may be selected, and if there is no such tone generation channel, a tone generation channel may be selected by the method of the embodiment or the like. Instead of the tone generation channel that has finished sounding, a tone generation channel whose sound generation amount is a predetermined value or less may be used.

Further, although an electronic musical instrument having no keyboard portion has been described in this embodiment, it is needless to say that the present invention can be applied to an electronic keyboard musical instrument having a keyboard portion or an automatic rhythm.

[0157]

As described above, according to the present invention, the tone generation channel and the effect addition channel can be rationally selected. For example, if only the effect-adding channel of the connected tone generation channel and effect-adding channel is selected first, that tone may suddenly be stopped, or useful tones with large effect addition may be stopped first. It is possible to reduce unnaturalness in expression of performance due to being lost.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an electronic musical instrument to which an assigner as an embodiment of the present invention is applied.

FIG. 2 is a diagram showing a MIDI channel map.

FIG. 3 is a diagram showing a part map.

FIG. 4 is a diagram showing an envelope management map.

FIG. 5 is a diagram showing an effect-added channel management map.

FIG. 6 is a diagram showing a task management map.

FIG. 7 is a diagram showing a tone generation channel management map.

FIG. 8 is a flowchart showing a reset routine.

FIG. 9 is a flowchart showing an event wait monitor call routine.

FIG. 10 is a flowchart showing an event occurrence monitor call routine.

FIG. 11 is a flowchart showing a timer interrupt processing routine.

FIG. 12 is a flowchart showing a key data reception interrupt processing routine.

FIG. 13 is a flowchart showing a key data reception task.

FIG. 14 is a flowchart showing a main assigner task.

FIG. 15 is a flowchart showing a pronunciation task (1/2).

FIG. 16 is a flowchart showing a pronunciation task (2/2).

FIG. 17 is a flowchart showing a pre-assigner task.

FIG. 18 is a flowchart showing a pre-assign order setting routine (1/3).

FIG. 19 is a flowchart showing a pre-assign order setting routine (2/3).

FIG. 20 is a flowchart showing a preassign order setting routine (3/3).

FIG. 21 is a flowchart showing the envelope task (1/2).

FIG. 22 is a flowchart showing an envelope task (2/2).

FIG. 23 is a flow chart showing a calculation routine of a sound generation amount of the attenuated sound system.

FIG. 24 is a flowchart showing a routine for calculating a sound volume of a continuous sound system.

FIG. 25 is a flowchart showing an effect addition channel management map updating routine.

[Explanation of Codes] 20 MIDI Circuit 21 Bus 22 CPU (Central Processing Unit) 23 ROM (Read Only Memory) 24 RAM (Random Access Memory) 25 Timer 26 Musical Sound Generation Circuit 27 Amplifier 28 Speaker

Claims (3)

[Claims] 1. A plurality of tone generation channels for generating a tone signal based on inputted tone information, a plurality of effect addition channels for adding an effect to a tone signal output from the tone generation channel, and a selected tone. An assigner for use in an electronic musical instrument equipped with a tone signal exchanging device for connecting a tone generation channel and an effect addition channel, the assigner selecting a tone generation channel and an effect addition channel to be assigned to input tone information, comprising: A tone generation channel evaluation means for calculating an evaluation amount for selecting a tone generation channel for each tone generation channel based on the state, and a tone generation based on the evaluation amount of each tone generation channel calculated by the tone generation channel evaluation means. A tone generation channel selection means for selecting a channel, and an effect addition channel based on the state of the effect addition channel. Effect addition channel evaluation means for calculating an evaluation amount for each effect addition channel, and an effect of selecting an effect addition channel based on the evaluation amount of each effect addition channel calculated by the effect addition channel evaluation means An electronic musical instrument assigner equipped with additional channel selection means. 2. The effect-added channel selecting means, when the effect-added channel to be selected is already connected to the tone generation channel, adds the effect until the connected tone generation channel is selected. The electronic musical instrument assigner according to claim 1, wherein no channel is selected. 3. The tone generation channel evaluation means calculates the evaluation amount by performing correction corresponding to the effect added by the effect addition channel when the effect addition channel is connected to the tone generation channel. The electronic musical instrument assigner according to Item 1 or 2.