JPH10319952A - Musical sound synthesizing device and musical sound parameter setting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the electronic musical instrument in which the capabilities of plug-in boards are fully exploited. SOLUTION: The devices are provided with a playing information input terminal (a MIDI input terminal 118), a tone color setting control circuit which sets musical sound parameters when tone color setting information (a parameter change) of a prescribed standard (an XG standard) is inputted from the terminal 118 based on the information (a CPU 101) and connectors (121 to 129) to which extension boards are inserted as required having a first sound source (a musical sound generator 108), that generates first musical sound signals based on the parameters, and a second sound source that generates second musical sound signals. The circuit 101 supplies the tone color setting information with the prescribed standard through the connectors 121 to 129 and the musical sound parameters of the second sound source are set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tone synthesizer and tone parameter setting device suitable for use in electronic musical instruments.

[0002]

2. Description of the Related Art Conventionally, there has been known an electronic musical instrument in which various plug-in boards can be mounted on a motherboard of a main body. In a personal computer or the like, various plug-in boards can be similarly mounted on a motherboard. Generally, in a personal computer, after inserting a plug-in board, software for operating the plug-in board is installed from a CD-ROM or a floppy disk.

[0003]

In the case of an electronic musical instrument, a CD-ROM is used as in a personal computer.
Although it is possible to provide an auxiliary storage device such as a drive or a floppy disk drive, it is often not provided to increase costs. Therefore, when a plug-in board having a function not assumed at the time of designing the electronic musical instrument main body is developed, there is a problem that it is difficult to sufficiently exert the capability of the plug-in board. The present invention has been made in view of the above-described circumstances, and has as its object to provide an electronic musical instrument that can fully exhibit the capabilities of a plug-in board.

[0004]

According to a first aspect of the present invention, a performance information input terminal (M) is provided.
When the timbre setting information (parameter change) is input to the IDI input terminal 118), the timbre setting control circuit (CPU) sets tone parameters based on the timbre setting information.
101) and performance information (MID) from the performance information input terminal.
When an I signal is input, a first tone generator (tone generator 108, DSP 104) for generating a first tone signal based on the performance information and the tone parameters, and a second tone signal are generated. And a connector (121 to 129) into which an extension board having a second sound source is inserted as necessary. The tone setting control circuit supplies the tone setting information by supplying the tone setting information via the connector. The tone parameters of the second sound source are set.

[0005] Further, in the structure of claim 2,
2. The tone synthesis device according to claim 1, wherein the timbre setting control circuit sends the timbre setting information to the second sound source after supplying identification information (model ID) indicating a type of the timbre setting information to the second sound source. It is characterized in that it is supplied to a second sound source.

Further, in the configuration according to claim 3,
2. The tone synthesizing apparatus according to claim 1, wherein the tone display parameter is displayed in correspondence with the tone parameters of the first sound source, the tone parameters of both the second sound source, and the tone parameters of the second sound source. ) Is displayed.

Further, in the configuration according to the fourth aspect, a display device (panel display 160) for displaying the name and value of the musical tone parameter, and a parameter editing operator (panel) for instructing increase or decrease of the musical tone parameter. Switch 15
(Increment / decrement key of 0) and when the parameter editing operator is operated, the operation information is output, and the name and value of the tone parameter are displayed on the display device based on the received display information. 1
And a control circuit for storing the current value of the tone parameter,
When the operation information is supplied from the first control circuit,
A second control circuit for correcting the current value based on the operation information and supplying the corrected result to the first control circuit as the display information.

[0008] Further, in the structure of claim 5,
5. The musical tone parameter setting device according to claim 4, wherein the first control circuit is provided in a main body of the musical sound synthesizer, and the second control circuit is detachably mounted on the main body. It is characterized by being provided in.

Further, in the configuration of claim 6, when the performance information input terminal (MIDI input terminal 118) and the effect setting information (parameter change) are input,
Effect setting control circuit (CPU 101) for setting effect parameters based on this effect setting information
And performance information (MIDI signal) from the performance information input terminal.
Is input, a sound source for generating the performance information and the first tone signal, and an extension board for giving an effect to the first tone signal and outputting the second tone signal as necessary. And the effect setting control circuit sets the effect parameters of the extension board by supplying the effect setting information via the connector.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

1. 1. Overview of Embodiment 1.1. Editing Parameters Specific to Plug-in Board Next, an outline of the electronic musical instrument of the present embodiment will be described with reference to FIGS. FIG. 6 shows a schematic flowchart in the case of editing parameters unique to the plug-in board. In addition,
The "parameters" referred to here are parameters for setting a tone and an effect, and the contents thereof differ depending on the type of the plug-in board. The flow on the left side of the figure shows the processing executed by the CPU on the motherboard, and the flow on the right side shows the processing executed by the CPU on the plug-in board.

In the figure, when the process proceeds to step SP101, a target plug-in board is selected on the motherboard. That is, in the present embodiment, a plurality of plug-in boards can be mounted, and it is necessary to specify which of the plug-in boards to communicate with. Here, one plug-in board is selected according to a user's operation of a panel switch or the like. Next, in step SP102, address information and a model ID for specifying parameters to be set are transmitted from the motherboard to the plug-in board. In the plug-in board, the address information and the like are received in step SP201, and in step SP202, the current value of the designated parameter is transmitted to the motherboard.

When the current value is received by the motherboard (step SP103), the name of the parameter and the current value are displayed on the display device of the main body (step SP1).
04). Next, increment / decrement of the parameter is designated by the user. Specifically, it is assumed that the user looks at the display value and operates the increment / decrement key on the panel of the electronic musical instrument, and the operation is detected in this processing. When this designation is detected, an instruction for increment / decrement is transmitted from the motherboard to the plug-in board (step SP106).

Next, step SP2 of the plug-in board
When this instruction is received in 03, the process proceeds to step SP204, and the current value is updated in the plug-in board according to the instruction. At this time, limit processing is performed on parameter values as necessary, but it is sufficient that the contents of this processing be recognized only by the plug-in board.

When the current value is updated, the process proceeds to step S
Proceeding to P205, the update result is transmitted to the motherboard. In the motherboard, the update result is received in step SP107, and the update result is displayed to the user in step SP108. In this series of flow, any parameter unique to the plug-in board can be displayed on the display on the panel of the electronic musical instrument, and the set value is edited by operating the switch on the panel. It is possible.

1.2. Editing Parameters of Plug-in Board and Motherboard Common Data Next, an outline of a process of editing parameters shared by the plug-in board and the motherboard will be described with reference to FIG. First, in step SP111, the editing instruction by the user is detected by the motherboard. Here, the editing instruction by the user is performed by operating an editing-related switch on the panel. Next, when the process proceeds to step SP112, the values of the parameters are updated and displayed based on the edit instruction.

Next, when the process proceeds to step SP113, the updated address information, model ID and set value of the parameter are transmitted to the plug-in board. When the plug-in board receives the address information, the model ID, and the set value in step SP211, the internally stored set value is updated based on the address information, the model ID, and the set value (step SP212). As described above, according to this flow, parameters commonly provided in the motherboard and the plug-in board can be simultaneously edited by operating the operators on the electronic musical instrument panel.

1.3. Next, an outline of processing for selecting a tone color when the plug-in board is a sound source will be described with reference to FIG. In the figure, when the process proceeds to step SP121, a target plug-in board is selected on the motherboard. Next, in step SP122, a request for a tone color map (a map indicating which tone colors are supported) is transmitted from the motherboard to the plug-in board.

In the plug-in board, step S
This request is received in P221, and step SP2
At 22, the timbre map is transmitted to the motherboard.
In the motherboard, the tone color map is received in step SP123, and in step SP124, which tone color is used is specified. That is, the operation of the switch on the panel by the user is detected, and in accordance with the operation, the user selects one of the plurality of tones included in the received tone color map. Next, when the process proceeds to step SP125, a request for the tone name of the selected tone color is transmitted to the plug-in board.

In the plug-in board, step S
When the request is received in P223, step SP
In 224, ASCII data representing the tone color name is transmitted to the motherboard. On the other hand, in the motherboard, the ASCII data is received in step SP126, and the ASCII data is displayed on the display in step SP127.

If the tone needs to be switched, signals called program change and bank select are issued on the motherboard (step SP12).
8). These signals are transmitted to the plug-in board in step SP129. Then, the plug-in board receives these signals in step SP225, and switches to the tone color specified in step SP226.

In this series of flows, the tone possessed by the plug-in board can be efficiently selected by the operator of the panel of the electronic musical instrument, and the tone name of the selected tone is displayed on the display of the panel. Can be. In this flow, the tone color is finally switched by the program change and bank select signals. As a result, selection can be made in the same form as that of a MIDI signal input from the outside, and consistency between selection on the panel and selection from the outside can be maintained.

Note that the above procedure is not limited to the case of selecting a tone color, but the case of selecting all effect data, waveform data, rhythm data, and automatic performance data of the plug-in board. Can be widely applied.

2. Hardware configuration of embodiment 2.1. Overall Configuration Next, the configuration of the electronic musical instrument of the present embodiment will be described with reference to FIG. In the figure, reference numeral 100 denotes a motherboard;
Reference numerals 199 to 199 denote plug-in boards that are detachable from the motherboard 100. Inside the motherboard 100, the CPU 101 controls each unit based on a control program stored in the ROM 102. A RAM 103 is used as a work memory or a data memory of the CPU 101. Each of the plug-in boards 191 to 199 includes a CPU, a RAM, a ROM, and the like, and exchanges various data while operating independently of the CPU 101 of the motherboard 100.

Reference numeral 108 denotes a tone generator, which is a CPU 101
The tone signal is synthesized on the basis of the performance information supplied from. Reference numeral 104 denotes a DSP that performs processing such as filtering on musical tone signals of a plurality of channels. Reference numeral 110 denotes an analog input terminal.
The signal is converted into a digital signal via the / D converter 109. Reference numerals 121 to 129 denote connectors, which are fitted with connector portions of the plug-in boards 191 to 199, respectively.

Reference numeral 107 denotes a serial IO port, which converts a supplied parallel signal into a serial signal and supplies it to the connectors 121 to 129.
129 or a serial signal received via the A / D converter 109 is converted into a parallel signal. A mixer 106 mixes various supplied tone signals. The mixer 106 performs mixing with a different mixing ratio for each output supply destination by time-division multiple-channel operation.

Here, the tone signal to be mixed is the tone signal generated by the tone generator 108, DSP1
Tone signal processed at 04, serial IO port 107
Is a musical tone signal supplied through the. The mixing result is output to the serial IO port 107 or the DSP 104.
Supplied to The DSP 104 can process tone signals of a plurality of channels, of which two channels are output channels to the outside.

That is, after the tone signal supplied to the output channel is subjected to the filtering process, the D / A
The signal is converted into an analog signal via the converter 105 and is sounded via the sound system 200.

Next, reference numeral 111 denotes a timer,
A timer interrupt is generated for 1. Reference numeral 170 denotes a disk drive, which records data supplied via the bus 115 and the IO port 112 on the disk 180, reads data recorded on the disk 180, and reads the data recorded on the disk 180 via the IO port 112 and the bus 115.
Output to RAM 103 and the like.

Reference numeral 160 denotes a panel display which displays data supplied via the IO port 113. Also, 1
Reference numeral 50 denotes a panel switch provided with various operators that can be operated by a user. For example, here
A numeric keypad for inputting numerical values of "0" to "9", an enter key for confirming the input numerical value, a cursor key for moving a cursor up, down, left and right, a panel display 16
A scroll key for scrolling the screen 0, an increment / decrement key for specifying increment and decrement of various parameters, and the like are provided. The operation event and the operation amount of these operators are notified to the CPU 101 via the IO port 114 and the bus 115.

Reference numeral 118 denotes a MIDI input terminal.
M from an external MIDI device (sequencer, keyboard, etc.)
Receive an IDI signal. 117 is a photocoupler,
The MIDI input terminal 118 and the circuit in the motherboard 100 are electrically insulated. The input MIDI signal output from the photocoupler 117 is supplied to the CPU 101 via the serial IO port 116 and
It is also supplied directly to the plug-in boards 191 to 199 through 1 to 129. That is, the same MIDI signal is supplied to the motherboard 100 and the plug-in board 191 at the same timing.

Here, there is one of the features of the present embodiment. That is, in the present embodiment, since the MIDI signal is supplied to the plug-in boards 191 to 199 without passing through the CPU 101, it is possible to prevent the supply of the MIDI signal to the plug-in boards 191 to 199 from being delayed. it can. In other words, the input MIDI signal is supplied to both the motherboard 100 and the plug-in boards 191 to 199, and both CPUs perform preset operations. For example, when a tone supported by the plug-in board 191 is selected, the tone synthesis is performed by the plug-in board 191 by its own judgment, and the tone synthesis is prohibited by the motherboard 100 by its own judgment. is there.

A driver 120 amplifies the MIDI signal supplied from the CPU 101 via the bus 115 and the serial IO port 116 and outputs the amplified signal via a MIDI output terminal 119. The plug-in boards 191 to 19
When it is necessary to output the MIDI signal generated by the CPU 9 to the outside, the MIDI signal is supplied to the CPU 101 via the serial IO port 116. CPU10
1, the MID generated by the motherboard 100
The I signal and the MIDI signal generated by the plug-in boards 191 to 199 are merged after the timing adjustment,
The merged MIDI signal is sent to the serial IO port 11
6. Output via the driver 120.

2.2. Channel Configuration Next, the channel configuration of the present embodiment will be described with reference to FIG. The above-described tone generator 108 includes “16” parts (parts correspond to “1” MIDI channels),
The mixer 106 is a digital mixer having a number of input and output channels. The mixer 106 allocates an input “2” channel and an output “2” channel to the plug-in boards 191 to 199, respectively, and allocates an input “2” channel to the A / D converter 109.

Further, the mixer 106 allocates “16” channels as inputs and outputs to the DSP 104, respectively. The “2” channel among these output channels is an output channel to the outside, and the tone signal related to the output channel is subjected to filtering processing and the like via the DSP 104 and then to the D / A converter 1.
05.

2.3. Signal flow of tone signal Mixer 106, DSP 104, tone generator 108, plug-in boards 191-199, and A / D converter 1
The flow of the musical tone signal between the sound signals 09 is determined by the set state of the mixer 106 and the microprogram for the DSP 104, and can be expressed as such a signal flow as shown in FIG.

In FIG. 3, reference numerals 201 and 203 denote a first part and a third part of the tone generator 108, and a second part 202 is realized by a plug-in board of a physical model sound source. 211 is an A / D part,
This is realized by the A / D converter 109.

Reference numeral 209 denotes an insertion effect, which gives various effects to the tone signal of the first part. Note that the insertion effect is an effect applied to the "1" part of the tone signal. 2
Reference numeral 10 denotes a hammer effect part, which is a kind of insertion effect, and is realized by a plug-in board (hammer board or the like). Here, the hamori effect is to add a musical tone having a predetermined pitch relationship to an input waveform or waveform data to produce a hamori effect.

Reference numerals 204 to 208 denote mixer sections, which are realized by the mixer 106. Reference numeral 212 denotes a chorus effect unit, and 213, a reverb unit.
A chorus effect and a reverb effect are given to the mixing result of 207. The mixing result of the mixer unit 208 is an output channel to the outside, and after the equalizing process is performed via the equalizer 214,
/ A converter 105.

The insertion effect 209, the chorus effect section 212, the reverb section 213, and the equalizer 214 are realized by time-division processing of the DSP 104. Of these, the chorus effect section 212 and the reverb section 21
The equalizer 3 and the equalizer 214 add effects to the mixing results of the tone signals of a plurality of parts. These are called system effects. Also, the mixer unit 2
Mixers capable of inputting a plurality of parts, such as 06 to 208 and 254, are called "groups".

Next, another signal flow is shown in FIG.
In the figure, reference numeral 252 denotes a second part of the tone generator 108, and reference numeral 253 denotes a 16-part sound source provided independently of the tone generator 108. Reference numeral 255 denotes a three-dimensional localization effect unit that applies a three-dimensional localization effect to the mixing result of the mixer unit 208.

254 is the first part 201-A /
This is a mixer unit for synthesizing tone signals of the D part 211, the 16 part sound source 253, the three-dimensional localization effect unit 255, and the like. The mixer unit 254 is realized by the mixer 106, and the 16-part sound source 253 and the three-dimensional localization effect unit 255 are realized by a plug-in board.

2.4. Types of Plug-in Boards The plug-in boards 191 to 199 include the following four types. (1) Single-part sound source The single-part sound source has a sound source unit composed of a single part like the second part 202 described above.
In other words, in MIDI, "16 channels" MIDI
Although the performance data based on the channel can be transmitted, the single part sound source is a sound source that generates a musical tone in response to the performance of only one of the MIDI channels. The tone signal output from the single-part sound source is handled in the same manner as each part of the tone generator 108, and the DSP 10
4 can be used.

(2) Multi-part sound source The multi-part sound source has a sound source of a plurality of parts like the above-mentioned 16-part sound source 253, and outputs a tone signal of each part in a mixed state. The multi-part sound source is a sound source that generates musical tones of a corresponding plurality of parts in response to input of a plurality of MIDI channels among the above-mentioned “16 channel” MIDI channels. So-called G
The M (General MIDI) sound source is also one of the multi-part sound sources.

(3) Insertion effect The insertion effect is an effect applied to the "1" part of the tone signal as described above.
A plug-in board that implements the hamo effect unit 210 corresponds to this.

(4) System Effect As described above, the system effect gives an effect to the result of mixing the tone signals of a plurality of parts, and is a plug-in board for realizing the three-dimensional localization effect unit 255. Corresponds to this. In addition, there are also system effects that provide general effects such as reverb.

3. Protocol of Embodiment 3.1. Tone Color Mapping In this embodiment, tone color mapping of the XG standard is adopted. In the XG standard, a tone is represented by an "8" -byte bank select MSB, an "8" -byte bank select LSB, and a "8" -byte program change.

Here, regarding the bank select MSB, "0" is a melody tone, "64" is an SFX tone,
“126” is assigned to the SFX kit, and “127” is assigned to the drum voice (other values are currently prohibited). In addition, the bank
Program change at select LSB = "0" is compatible with GM standard program change,
"Acoustic Grand Piano" of "128" basic tones,
"Bright Acoustic Piano", ......, "Gunshot" are assigned.

Also, by bank select LSB,
The variations of these basic timbres are mapped.
That is, when the bank select LSB is "0", the basic tone color is obtained, and when "1" to "127", the variation is obtained. Thus, in the XG standard, a maximum of “4
× 128 × 128 = 65536 ”types of timbres can be mapped.

3.2. General Method of Tone Selection Next, a general method of tone selection based on bank select LSB and program change in the XG standard will be described. Here, as an example, the program change is “17” (drawbar organ), the bank select LSB is “0” (basic tone),
It is assumed that "1" and "2" (variations) are mapped.

Here, when only the program change "17" is specified without specifying the bank select LSB, "0" is set to ensure compatibility with the GM standard.
(Basic tone) is selected. Also, bank select L
When "0", "1" or "2" is designated as the SB, the tone corresponding to the bank select LSB is naturally selected. If a bank select LSB not mapped (for example, “3”) is specified, “0” (basic tone color) is selected.

Next, it is assumed that the basic timbre "0" is not mapped, and only the variations "1" and "2" are mapped. In such a case, "1"
Alternatively, when the bank select LSB of “2” is designated, the tone color of the corresponding variation is selected. However, when only a program change is designated, or when a bank select LSB other than "1" or "2" is specified.
Is specified, one of the variations "1" or "2" is selected.

3.3. Communication mode Plug-in boards 191-199 and motherboard 100
In the above, a tone signal (waveform data) and a control signal are exchanged. Of these, the tone signal is the serial IO
The control signal is transmitted via the port 107 and the control signal is transmitted via the serial IO port 116. Here, the control signal has the same format as the MIDI signal.

That is, the CPU 1 of the motherboard 100
01 to the plug-in boards 191 to 199 to make various inquiries and settings.
When a response is sent from the .about.199 to the CPU 101, MIDI system exclusive is used. At this time, the following two communication modes are used.

(1) Mode 1 In mode 1, bidirectional communication is performed between the motherboard 100 and one of the designated plug-in boards. The mode 1 is used, for example, for inquiring of the plug-in board about the editing state of the tone color and for responding to the inquiry.

(2) Mode 2 In mode 2, one-way communication is performed from the motherboard 100 to all plug-in boards. This mode 2 is used when performing unilateral data transmission at the time of initial setting or tone color editing.

3.4. Communication Contents (1) Signal Format Next, the motherboard and the plug-in board exchange information by exchanging “messages”.
When transmitting a message, a MIDI system exclusive message, a "model ID" indicating the type of the message, and an "address" indicating what parameter the message relates to are transmitted to the other party in advance. .

(1-1) Model ID There are three types of model IDs: "4C", "4E", and "4F". Here, “4C” is used for communication between the motherboard and the plug-in board, and
This indicates that control is also possible with the DI signal. “4E” is used for communication between the motherboard and the plug-in board.

"4F" indicates a special command for communication between the motherboard and the plug-in board.
In the special command, before the model ID, a “special command identifier” indicating a classification (first or second special command group) of the special command, and “request” or “r”
“direction identifier” indicating any one of “eply (response)”. An argument can be added to “request”, and the data length of “reply” is also variable.

(1-2) Address For example, from the motherboard to the plug-in board, M
MidiRe to specify not to receive IDI signal
It is necessary to transmit a message of ceiveEnable / Disable (details will be described later). In this case, first, MidiReceiveEnable /
Disable address (for example, 0x001002) is transmitted and Mid
"0" is specified as the value of iReceiveEnable / Disable. Hereinafter, main messages among various messages used in the present embodiment will be described below.

(2) Normal command As a standard for controlling a sound source, “General MIDI System Le
vel 1 "(so-called GM standard) and XG standard are known. The motherboard and the plug-in board of the present embodiment can exchange all commands specified by the GM standard and the XG standard, thereby enabling the motherboard to edit various parameters used in the plug-in board. Can be. There are a wide variety of commands defined by the GM and XG standards. Here, parameter changes that are frequently used in this embodiment will be described.

The model ID of the normal command is “4C”,
The address of the parameter to be changed is "3" in the address.
Set in bytes. The parameter change message itself is generally “1” byte. The “1” byte message is used, for example, for switching on / off, setting data in a range of “−64 to +63”, or setting data in a range of “0 to 127”.

(3) System Setup The messages described below are mainly exchanged between the motherboard and the plug-in board during system setup (when power is turned on), and the model ID is “4”.
E ". (3-1) DeviceNo DeviceNo is a "1" byte message for setting any device number from "1 to 16" from the motherboard to the plug-in board.

(3-2) ForceDamp ForceDamp is a message for instructing a force dump from the motherboard to the plug-in board. When the value is "00 to 1F", the part number for which the force dump is to be performed is specified. And "7F"
If, the force dump of all parts is considered to be performed.

(3-3) MidiReceiveEnable / Disable MidiReceiveEnable / Disable is a message for designating whether or not a MIDI signal should be received from the motherboard to the plug-in board.
“0” indicates that no data is received.

(3-4) SinglePartTgParameterBaseAdd
ress SinglePartTgParameterBaseAddress is a message for designating the base address from the motherboard to the plug-in board when the plug-in board is a single-part sound source. In the plug-in board, an address for changing various parameters is determined based on the base address.

(3-5) InsertionEffectParameterBase
Address and SystemEffectParameterBaseAddress InsertionEffectParameterBaseAddress is a message that specifies the base address when the plug-in board is an insertion effect. Similarly, SystemEffectParameterBaseAddress is a message for specifying a base address when the plug-in board is a system effect.

(3-6) SameTypePbTotalNo and SameT
ypePbSerialNo SameTypePbTotalNo and SameTypePbSerialNo are messages transmitted from the motherboard to these plug-in boards when there are a plurality of plug-in boards of the same type. That is, SameTy
pePbTotalNo reports how many boards of the same type exist in total, and SameTypePbSerialNo reports the serial number assigned to each board for each board.

(3-7) MotherDisplayLevel MotherDisplayLevel is a message for notifying each plug-in board of the number of characters displayed on the main body.

(4) PB System Information The message described below is mainly notified from the plug-in board to the motherboard at the time of system setup (when the power is turned on), and the model ID is “4E”.
It is.

(4-1) PbName PbName is an ASCII code of a maximum of 14 bytes (28 characters) from each plug-in board to the motherboard.
It notifies the model name of each plug-in board (for example, “VH10-prg”).

(4-2) PbIconData PbIconData is a message that has a data length of 30H (= 48) bytes and notifies the motherboard of the bitmap data of the icon from each plug-in board.

(4-3) PbType PbType is data of “3” bytes, and is a message for notifying the plug-in board type from each plug-in board to the motherboard. Each byte of PbType is
They are called PbTypeMsb, PbTypeLsb and VersionNo.

Here, PbTypeMsb takes a value of “0 to 3”, “0” indicates a single-part sound source, “1” indicates a multi-part sound source, “2” indicates an insertion effect, and “3” indicates a system effect. . PbTypeLsb represents a subclassification for each type. For example, if the plug-in board is a single part sound source, PbTypeLsb indicates a sound source system (physical model sound source, PCM sound source, FM sound source, etc.). VersionNo indicates the version number of the plug-in board.

(4-4) TotalNativeSystemParameterNo The TotalNativeSystemParameterNo is used by the plug-in board and notifies the CPU 101 of the number of system parameters to be edited by the general-purpose parameter editor (program for editing parameters) stored in the ROM 102 of the motherboard 100. Is what you do. The system parameters refer to parameters used for setting the mode of the plug-in board.

(4-5) TotalNativePartParameterNo TotalNativePartParameterNo is a message for notifying the motherboard of the number of part parameters output by the plug-in board. The part parameters are the number of parameters to be set for each part of the plug-in board.

(4-6) TotalNativeEffectParameterNo The TotalNativeEffectParameterNo is a message for notifying the motherboard of the number of selectable effect parameters when the plug-in board is an effector.

(4-7) TotalVoiceMapNo The TotalVoiceMapNo notifies the motherboard of the number of selectable tone colors when the plug-in board is a sound source. Here, the “1” map is one bank
This is the content of the program change corresponding to the select MSB and one bank select LSB.

(4-8) TotalInsertionEffectMapNo The TotalInsertionEffectMapNo notifies the motherboard of the types of effects that can be selected when the plug-in board is an insertion effect. For example, if vocoder, detune, chordal, and chromatic effects can be selected as the insertion effect, the total number “4” is notified to the motherboard.

(5) First special command group “TotalNative... Paramet” in the PB system information
The parameter having the name “erNo” indicates “number” such as the number of timbres and the number of effects. The first special command group includes “re” for specific contents of these tones and effects.
It is for exchanging necessary information as a premise of “quest” and “reply”.

(5-1) NativeSystemParameterInforma
tion The "request" of the specific contents of the system parameters from the motherboard to the plug-in board is "1".
This is a byte message and only the parameter number is reported. Here, the parameter number has a minimum value of “0” and a maximum value of “the return value of TotalNativeSystemParameterNo−1”.
become.

As in the above-described example, if the plug-in board is an insertion effect that performs detune or the like, for example, “0” if a melody channel parameter is required, and “1” if a harmony channel parameter is required. It is good to set to.

The plug-in board is NativeSystemParame
Upon receiving the terInformation "request",
The “reply” of “5” bytes is supplied to the motherboard. This response consists of a "1" byte Mo
delID, AddressHi, AddressMid, AddressLow, and Da
Consists of taSize.

The “reply” is information that is required when the motherboard later requests character information or the like from the plug-in board (the details will be described in the description of the second special command group). First, ModelID is for notifying a model ID to be given in a second special command output from the motherboard later.
Mid and AddressLow are for notifying an address to be given in the second special command. Also, Data
"Size" is for notifying the data size of character information and the like transmitted from the plug-in board to the motherboard as "reply" of the second special command.

As described above, the “direction identifier” indicating “reply (response)” and the model ID
(“4F”) and an address representing NativeSystemParameterInformation are added. These are the "reply"
ModelID, AddressHi, AddressMid, Addres contained in
Needless to say, it is separate from sLow.

(5-2) NativePartParameterInformati
on and NativeEffectParameterInformation NativePartParameterInformation and NativeEffectPa
rameterInformation is used to acquire information on part parameters and effect parameters. NativeSy above
As with stemParameterInformation, "requ."
"est (request)" is a message of "1" bytes,
"Reply" from plug-in board is also NativeSystemParam
It becomes a message of "5" bytes similar to "reply" of eterInformation.

(5-3) VoiceName VoiceName is a parameter used for inquiring the timbre name when the plug-in board is a single part sound source. The “request (request)” from the motherboard to the plug-in board is composed of a total of “3” -byte tone number composed of MsbNo, LsbNo and PgmNo, and “1” -byte As
It consists of ciiDataSize. Here, AsciiDataSize indicates the number of characters that can be displayed on the main body (for example, “8”).

On the other hand, “reply” of the plug-in board
It consists of “1” byte AsciiDataSize and variable length VoiceName. AsciiDataSize is the number of characters as included in "request", and VoiceName is an ASCII code for displaying a timbre name within the range of AsciiDataSize.

(5-4) VoiceMapInfo VoiceMapInfo is a message used by the motherboard to query the plug-in board for a tone color map when the plug-in board is a single-part sound source. “Request” of VoiceMapInfo is a message of “1” byte, and specifies a map number. This map number is from “0” to “TotalVoiceMapNo”.
Return value -1 ".

Also, "repl" of VoiceMapInfo
“y” is a message of “34” bytes, “1” byte BankMsbNo, “1” byte BankLsbNo, and “1” byte bitmap Pgm0to3AssignBitMap, Pgm
4to7AssignBitMap,..., Pgm124to127AssignBitMap.

The bitmap Pgm0to3AssignBitMa
p, ... Pgm124to127AssignBitMap is BankMsbNo and B
In the map specified by ankLsbNo, "1" is represented in a corresponding bit position when a timbre exists, and "0" otherwise when the timbre does not exist.

(5-5) BankMsbIconData BankMsbIconData is a message used when the plug-in board is a single-part sound source to inquire from the motherboard to the plug-in board for bank classification icon data.

The “request” of BankMsbIconData is “1”
This is a byte message, and specifies the BankMsbNo. In addition, the “reply” is “48” representing an icon.
It is byte map data. For example, in the classification of a bank for simulating a wind instrument, it is preferable to return an icon with a wind instrument.

(5-6) InsEffectMapInfo InsEffectMapInfo is a message used by the motherboard to query the plug-in board for an effect map when the plug-in board is an insertion effect. “Request” of InsEffectMapInfo is a message of “1” byte, and specifies a map number. This map number is "0" ~
It is specified in the range of "Return value of TotalInsertionEffectMapNo-1".

"Reply" of InsEffectMapInfo is a message of "7" bytes, and "1" byte of Type
Msb, “1” byte TypeLsb, and “1” byte Prm1
to10Type, Prm1to4SupportMap, Prm of each "1" byte
5to8SupportMap, Prm9to12SupportMap, and Prm13to1
6SupportMap.

Here, TypeMsb and TypeLsb correspond to the above Ba
Like the nkMsbNo and BankLsbNo, it indicates the type of effect and the serial number within the type. Also,
Prm1to4SupportMap, Prm5to8SupportMap, Prm9to12Supp
ortMap and Prm13to16SupportMap are "1-16"
Regarding the effect No., “1” is shown when it exists, and “0” when it does not exist, in the corresponding bit position.

(6) Second Special Command Group The second special command group is mainly used for various parameters that are not recognized by the motherboard by using the result of the “reply” of the first special command group from the plug-in board. This is a command for obtaining information.

In the second special command group, “reply” and “request” of the “direction identifier” take different values for each command. That is, ParameterNam described below
e, ParameterInfo, ParameterSupportInfo, RelativePa
"request" of rameter and AbsoluteParameter are represented by codes "00", "01", "02", "03" and "04", respectively, and "reply" is "40" and "4" respectively.
1 "," 42 "," 43 "and" 44 ".

(6-1) ParameterName ParameterName is a command for notifying the parameter name from the plug-in board to the motherboard. In “request” of ParameterName, the message is “0” bytes. This includes a “special command identifier” indicating the second special command group, a “direction identifier” indicating “request (00)”, and a model ID (which is a NativeSyst
Model included in "reply" of emParameterInformation
ID) and address information (equal to AddressHi, AddressMid, AddressLow included in "reply")
This specifies the name of the corresponding parameter.

The “reply” of the ParameterName is composed of “1” byte DataSize and a parameter name that is variable length ASCII data. DataSize indicates the data size (number of characters) of the ASCII data. For example, if the plug-in board is an insertion effect and “Detune” is specified as the address information, “Detune Typ
Return a string like "e".

(6-2) ParameterInfo ParameterInfo is a command for inquiring the parameter value from the motherboard to the plug-in board. In “request (01)” of ParameterInfo, the message is “0” bytes. The reason for this is ParameterN
Same as ame.

“Reply” of ParameterInfo is “1” byte DataSize, numerical data MaxValue, MinValue and
Consists of DefaultValue. DataSize indicates the data size of each piece of numerical data. MaxValue, MinValue and DefaultValue indicate the maximum value, minimum value and default value of the parameter, respectively.

(6-3) ParameterSupportInfo ParameterSupportInfo is a command for knowing whether or not the parameters supported by the motherboard are supported by the plug-in board. That is,
It is used to confirm whether or not the plug-in board can respond when receiving a dump request or a parameter request.

The "request" message of ParameterSupportInfo is a "1" byte. "0" indicates a parameter request, and "1" indicates a dump request. The “reply” of the plug-in board for this is also “1” byte, and if “0”, it is not supported, “1”
In the case of, it indicates that correspondence is possible.

(6-4) RelativeParameter RelativeParameter is a command for obtaining information when a parameter on the plug-in board has changed relative to the current value. "Request" of RelativeParameter
Message is "3" bytes, each "1" byte
Consists of RelativeData, ReplyDataSize and DisplayDataSize.

Here, RelativeData is a change value (for example, +1, -1 or the like) with respect to the current value of the parameter.
yDataSize is the display data size of the changed parameter (numerical value). DisplayDataSize is the display data size of the changed parameter (character).

"Reply" of RelativeParameter is "1"
DataSize of byte, Data (numerical data) of data length indicated by the DataSize, and DisplayDataSiz of “1” byte
e and DisplayD of the data length indicated by the DisplayDataSize
ata (character data).

(6-5) AbsoluteParameter AbsoluteParameter is a command for obtaining information when a parameter on the plug-in board has absolutely changed. The message of "request" of AbsoluteParameter is "3" bytes, and each of "1" bytes of AbsoluteData,
Consists of ReplyDataSize and DisplayDataSize. here
AbsoluteData is the current change value of the parameter, Repl
yDataSize and DisplayDataSize are the above RelativePara
Same as for meter.

“Reply” of AbsoluteParameter is “1”
DataSize of byte, Data (numerical data) of data length indicated by the DataSize, and DisplayDataSiz of “1” byte
e and DisplayD of the data length indicated by the DisplayDataSize
ata (character data).

4. Operation of Embodiment 4.1. Initial Settings (1) General Initial Settings Next, the operation of the present embodiment will be described. First, when the power of the electronic musical instrument is turned on, the motherboard 100 (CPU 10
In 1), the program shown in FIG. 5 is started. In the figure, when the process proceeds to step SP1, initialization is performed. Here, first, the communication mode is set to mode 2 and MotherDisplayLevel is notified to all plug-in boards. This allows each plug-in board to be
The erDisplayLevel is stored, and the length of the character string transmitted to the motherboard is limited as necessary.

Next, the communication mode is switched to mode 1, and the device number “1” is set in the plug-in board 191 inserted in the connector 121.
viceNo is transmitted. The plug-in board 191
The CPU 101 notifies the CPU 101 of the type of the plug-in board 191 by storing the device number “1” based on DeviceNo and outputting PbType and PbIconData.

That is, the CPU 101 recognizes the type of the plug-in board 191 by PbTypeMsb,
Recognize the sub-classification (sound source system etc.) by Lsb
Thus, the version number of the plug-in board 191 is recognized, and the recognized content is stored in the RAM 103. The icon data specified by PbIconData is also stored in the RAM 103.

Next, the plug-in board 191 has a CPU
If system parameters exist for 101
Notify TotalNativeSystemParameterNo, notify TotalNativePartParameterNo if part parameter exists, and TotalNat if effect parameter exists
Notify iveEffectParameterNo.

When the plug-in board 191 is a single-part sound source, SinglePartTgParameterBaseAdd
Notify ress and TotalVoiceMapNo, but if it is an insertion effect, TotalInsertionEffectMa
Notify pNo and InsertionEffectParameterBaseAddress. If the plug-in board is a system effect, SystemEffectParameterBaseAddress is notified. Thereby, the CPU 101 recognizes the number of various parameters and the base address in the plug-in board 191, and stores the recognized information in the RAM 103.

The plug-in boards 192 to 199
Similarly, device numbers "2", "3", ...
Is notified, the PbType of each plug-in board, the number of editable parameters and the base address are stored in the RAM 10.
3 will be stored. Therefore, the type, sub-classification, version number, and the number of various parameters that can be edited of each plug-in board are stored in the RAM 103.

Next, on the panel display 160, an initial menu screen displaying a character string as shown in the following table is displayed. In the initial state, the cursor position is set at "1: part setting"("1: part setting" is displayed in black and white inverted).

[Table 1]

(2) Correction of Main Body Tone Map As described above, in the XG standard tone color mapping, up to “4 × 128 × 128 = 65536” types of tone colors can be mapped. However, bank select L
If only one of the variations expressed by the SBs is pronounced, the number of selectable melody tones (bank select MSB = 0) is equal to the number of program changes, and is "128" types.

[0117] Which program change the motherboard 100 supports is determined in advance in the ROM 10
2 is transferred to the RAM 103 in the initial setting. The content transferred to the RAM 103 is called a main body tone color map.

In the main body tone map, each program change is associated with "1" byte, and "127" is stored for a program change supported by the motherboard 100, and "0" is stored for an unsupported selectable tone. ing. Regarding the program change supported by the plug-in board, the device number of the plug-in board is “1 to 1”.
6 "and map numbers" 1 to 16 "are stored. However, in the initial state, since it is not determined which plug-in board supports which program change, all bytes are “127” or “0”.

Here, when the motherboard 100 and the plug-in board support the same program-change tone, there is a problem as to which tone is to be adopted. Generally, the motherboard 100 performs tone synthesis with standard performance to suppress the price of the main body of the electronic musical instrument, whereas the plug-in board is sold as an option and performs higher-performance tone synthesis. . Therefore, when the program changes supported by the two overlap, the tone on the plug-in board side is preferentially adopted.

More specifically, for the program change supported by the plug-in board, the device number of the plug-in board is written in the corresponding portion of the main body tone map, so that the sound generation on the motherboard 100 is prohibited. is there. Therefore, the details of such processing will be described below.

First, as described above, when the plug-in board is a single part sound source, the TotalVoiceMapNo
Is notified to the CPU 101. The CPU 101
Designate each map number from “0” to “TotalVoiceMapNo−1” and transmit “request” of VoiceMapInfo to the plug-in board.

On the other hand, as described above, “reply” of VoiceMapInfo is
Will be replied to. The CPU 101 uses the Ban in the “reply”
It is determined whether or not kMsbNo is “0”. And
If it is other than "0", no editing of the main body tone map is performed.

On the other hand, if BankMsbNo in “reply” is “0”, the bit map Pgm0to3AssignBitMap,..., Pgm in the 128-byte storage location specified by BankLsbNo
The device number and the map number of the plug-in board are written in the portion corresponding to the program change in which “1” is set in 124to127AssignBitMap.

Since this processing is performed for all the single-part sound sources, the main body tone map indicates whether each program change is supported and, if so, the corresponding board (the motherboard 100 or the motherboard 100). Any plug-in board) will be stored.

4.2. Part Setting (1) Designation of “Part Setting” Returning to FIG. 5, when the process proceeds to step SP2, it is determined whether a “factor” for performing the process has occurred. Here, the “factor” refers to, for example, an input of a MIDI signal via the MIDI input terminal 118, an event in the panel switch 150, or the like. Next, when the process proceeds to step SP3, it is determined whether a "factor" has occurred. Then, in a state where neither factor occurs, step SP
The process waits in steps 2 and 3.

Here, when the enter key is pressed on the numeric keypad of the panel switch 150, the event is detected in step SP2, and the event is detected in step SP2.
3 is determined as "YES", and the process proceeds to step SP4.
Proceed to. In step SP4, the process branches for each "factor".

Here, since the event at the panel switch 150 is the "factor", the process proceeds to step SP6, and the process according to the event is performed. In the above example, since the enter key was pressed when the cursor was positioned at "1: part setting" on the initial screen,
It is determined that "1: the part setting has been designated". In addition,
1: Part setting refers to changing the content of any part in the tone generator 108 or the multi-part sound source (plug-in board).

(2) Display of Parts When editing a part, it is necessary for the user to specify the part to be edited. further,
Prior to that, it is necessary to display a specifiable part so that the user can select it. First, the parts that can be specified only by the motherboard 100 are the first part to the sixteenth part realized by the tone generator 108 and the parts input from the A / D converter 109, which are a total of "17" parts.

It is convenient to be able to designate each part of the multi-part sound source. Therefore, CPU1
01 displays the default state of each part on the motherboard 100, the icon and name of the multi-part sound source, etc. on the panel display 160 as shown in the following table.

[Table 2]

(3) Designation of editing target part Here, if the user presses “2” on the numeric keyboard, the process proceeds to SP6 via steps SP3 and SP4. Here, the input “2” is displayed on the panel display 160.
Will be displayed. Further, when the user presses the enter key, the process proceeds to step SP6 again, where it is determined that the “second part” has been designated as the editing target. When the part number has two or more digits, it is preferable to press the numeric keypad continuously and press the enter key, for example, "1" or "5".

(4) Display of tone color group Next, it is necessary to specify a tone color for the part to be edited. Here, since the types of timbres are enormous, the timbres are classified into a plurality of groups, and this group is designated first. For this reason, a display as shown in the following table is performed on the panel display 160.

[Table 3]

Here, the cursor position is set to a group corresponding to the previously selected timbre. In the above example, since the second part is set to “honky tonk piano”, the cursor is set to “1: (built-in) piano system”.

(5) Display of tone color name and the like When the user designates a group number from "1" to "20", the main tone color map is referred to for a program change belonging to the group. Here, when "127" is stored in the corresponding location of the main body tone map, since the tone name or the like is stored in the ROM 102 for the program change, the content is read.

On the other hand, when the device number and the map number of the plug-in board are stored in the main body tone color map, "request" of VoiceMapInfo is transmitted to the plug-in board together with the map number. This "r
When "eply" is returned, the CPU 101 recognizes the bank select MSB and the bank select LSB based on BankMsbNo and BankLsbNo included therein.

Next, the recognized bank select MSB
Is set to MsbNo, the bank select LSB is set to LsbNo, the program change is set to PgmNo, and the maximum number of characters (for example, 20) of the timbre name displayed on the panel display 160 is ASCIID.
As the ataSize, “Request” of VoiceName is transmitted from the CPU 101 to the plug-in board. On the other hand, from the plug-in board, AsciiDat
aSize and ASCII data of the timbre name having the number of characters indicated by AsciiDataSize are returned.

As described above, when the timbre name built in the motherboard 100 or realized by the plug-in board is obtained, the contents are displayed on the panel display 16 as shown in the following table.
Displayed as 0.

[Table 4]

In Table 4, an icon of a plug-in board, which is a single-part sound source, is actually displayed at the position of “☆” based on PbIconData. That is,
In the above example, “Acoustic Grand Piano” and “Brig
ht Acoustic Piano ”is realized by a plug-in board, and the user
Can be immediately recognized on which program change the plug-in board is used.

Here, the cursor position is set to the tone color name corresponding to the previously selected tone color. In the above example, since the tone color is set to "Honky-tonk piano", the cursor is set to "4: Honky-tonk Piano". Here, if the user designates a timbre name of “1” to “8”, the timbre is set to the part (second
Part). As described above,
The user can set a tone color for a desired part. When the user presses “0” on the numeric keyboard in Tables 2 to 4, the menu one level higher is displayed again.

4.3.2: Insertion effect setting When "2: Insertion effect setting" is selected in Table 1, a list of insertion effects is displayed on the panel display 160 as shown in the following table. . The list of insertion effects is PbTy
A plug-in board that returns "2" (insertion effect) as pe is also included.

[0140]

[Table 5]

In the above display example, the icon of the plug-in board obtained at the time of the initial setting is displayed in the place of "*". The character string “(Single IE)” is displayed based on the type indicated by PbTypeMsb, “HM21P” is PbName, “HamoriBoard”
Is PbTypeLsb, and “Ver.1.00” is based on VersionNo, based on the indicated contents. After such display, the cursor position is set to "Built-in Insertion Effect".

Here, the user inputs “1” on the numeric keyboard.
When the user presses the enter key, "1: Built-in insertion effect" is selected (in the following description, such an operation is simply expressed as "select"). Then, a list of various parameters related to the built-in insertion effect is displayed on panel display 160, and the user can edit these parameters. Such an operation is the same as that of a known electronic musical instrument.

On the other hand, the operation when the user selects the plug-in board is also one of the features of the present embodiment.
This point will be described in detail. First, as described above, when the plug-in board is an insertion effect, TotalInsertionEffectMapNo is notified to the motherboard 100 at the time of initial setting. Therefore, the CPU 10
1 designates each map number from “0” to “TotalInsertionEffectMapNo−1” and “requ.
"est" to the plug-in board.

On the other hand, as described above, “reply” of InsEffectMapInfo is sent from the plug-in board to the CPU1.
Reply to 01. As described above, Prm1to4SupportMap,..., Prm13to16SupportMap in the “reply” indicates whether or not the effects of the numbers “1 to 16” exist. The address corresponding to each effect is the base address (Insertio
nEffectParameterBaseAddress) and InsEffectMapInfo
TypeMsb and TypeLsb in “reply” of “
The number is uniquely determined based on the sixth effect number.

Therefore, the CPU 101 sends the parallel address to the plug-in board together with the determined address.
"request" of terName is transmitted. The returned "reply" includes ASCII data indicating the parameter name. Similarly, along with the previously determined address, the CPU 101
"request" of rameterInfo is transmitted. The returned “reply” includes MaxValue, MinValue, and DefaultValue indicating the maximum value, the minimum value, and the default value of the parameter. Based on the information obtained in this way, a display as shown in the following table is performed on the panel display 160.

[0146]

[Table 6]

In Table 6, the character strings “stroke strength” and “stroke depth” represent ASCII data in “reply” of ParameterName as it is. In both cases, “(0 to +127) current value: 10” is displayed, where “0” is MinValue and “+127” is
MaxValue, “10”, is a value returned from the plug-in board as DefaultValue.

[0148] Here, the user sets "2: Depth of hammer ...
When "..." is selected, the cursor moves to that position. Here, when the user presses the increment key on the panel switch 150, the Relative
"Request" of Parameter is transmitted. At that time,
“+1” is specified as RelativeData. On the other hand, in the plug-in board, “11” which is the result of incrementing the current value “10” of “depth of hammer” by “1” is obtained.

Then, in the “reply” of RelativeData, the calculation result “11” is returned as Data. As a result, the “current value: 10” portion of the cursor line of the panel display 160 is changed to “current value: 11”. Conversely, when the decrement key is pressed by the panel switch 150, “−” is set as RelativeData.
"1" is specified, and a result obtained by subtracting "1" from the current value is returned from the plug-in board.

At this stage, the plug-in board only returns the result of incrementing / decrementing the current value, but does not mean that the parameters themselves in the plug-in board have been changed. To set the change result on the plug-in board, the user selects “3: Set on board”.

When such an operation is performed, a parameter change relating to the parameter to be changed is transmitted to the plug-in board together with the changed value (the value displayed on panel display 160). Then, in the plug-in board, the internal parameters are changed based on the parameter change.

4.4. Setting of other parameters The parameter setting method for the insertion effect plug-in board has been described in detail above.
The parameter setting is similarly performed for the plug-in board of the effect.

That is, ascii data such as parameters to be set is notified to the motherboard 100 from the plug-in board side, so that any software not assumed at the time of designing the motherboard 100 also needs some software on the motherboard 100 side. The parameter names can be displayed without changing them.

Also, when changing the value of a parameter, “+1” or “−1” is transmitted from the motherboard 100 as RelativeData, and the calculation itself for changing the current value is executed on the plug-in board side. The calculation result is returned to the motherboard 100 and displayed. This means that the plug-in board can freely determine the calculation method for RelativeData.

For example, when it is preferable to set the parameters exponentially, the increment / decrement width per operation may be increased as the current value increases. Further, even in the case where the limit processing is performed on the parameter value, an appropriate processing can be set according to the property of the parameter. Such a calculation method can be freely determined by a program on the plug-in board side, and furthermore, it is not necessary for the motherboard 100 side to know at all.

4.5.3: 4: Edit signal flow (1) Assignment of insertion effect When "4: Edit signal flow" is selected on the initial screen (Table 1), a character string as shown in the following table is displayed. The displayed signal flow edit selection screen is displayed.

[Table 7]

Here, when the user selects “assignment of insertion effect”, a screen as shown in Table 8 below is displayed. Here, the name of each insertion effect and the part number to which the insertion effect is assigned are displayed. In the example shown in the table below, all insertion effects are assigned to any part, but if the insertion effect is not assigned to any part,
“Part number: (none)” is displayed.

[0158]

[Table 8]

Here, when the user selects “1: built-in insertion effect”, the screen shown in Table 9 below is displayed on panel display 160.

[Table 9]

Here, when the user designates a part number, a part number to which an insertion effect is assigned is set according to the designated contents, and the screen of Table 8 is displayed again reflecting the set contents. That is, when the user selects “5”, “part number: 1” in Table 8
Is changed to "part number: 5". In this way, the user can freely set the part to which the insertion effect of the built-in or plug-in board is assigned.

(2) Group Assignment In the screen shown in Table 7, the user selects "2: Group assignment".
Is selected, the screen shown in Table 10 below is displayed on the panel display 1.
It is displayed at 60.

[Table 10]

In Table 10, the horizontal axes “G1” to “G4”
Is a column corresponding to group numbers "1" to "4" (see FIGS. 3 and 4), and the vertical axis indicates input signals for each group.
The numbers “0” to “127” written at the intersection of the two represent volume values. The contents of Table 10 correspond to the signal flow of FIG. For example, according to FIG.
The first group (mixer unit 206) receives the tone signal of the first part and the tone signal of the second part via the built-in insertion effect.
In addition, a value of “1” or more is displayed in a row where “Part 2” is written, and “0” is written in other rows.

In the example shown in FIG. 3, since there is no "fourth group", the vertical axis "G
4 ”and the portion related to“ Group 4 ”on the horizontal axis are all“ 0 ”. As shown in FIG. 3 and Table 10,
Each group can also receive a tone signal output from another group (if a system effect exists, the tone signal after passing through the system effect).

Here, the cursor is located at the intersection of the horizontal axis "G1" and the vertical axis "Part 1". Here, when the user operates the cursor keys, the cursor moves to the columns in the up, down, left, and right directions. When the increment / decrement key is operated, the volume value is changed.

When a multi-part sound source (for example, the 16-part sound source 253 in FIG. 4) exists in the plug-in board, “AD part:...” And “group 1:. Between, "☆ multi sound source: 0 0
A line such as “0 87” (☆ is an icon) will be inserted.

(3) System Effect Assignment When the user selects “3: System Effect Assignment” on the screen of Table 7, a screen as shown in Table 11 below is displayed on the panel display 160. Here, system effects are assigned to each group in the same manner as in the process of assigning insertion effects to parts.

[0167]

[Table 11]

As described above, the user can freely set whether to assign a built-in (tone generator 108) sound source or a single-part sound source plug-in board to each part. You can assign any effect. Further, since the connection relation of the mixers constituting each group and the system effect inserted in each group can be arbitrarily determined, it is possible to freely set the signal flow as shown in FIGS. it can.

4.6. Returning to FIG. 5, MIDI processing is performed during the loop of steps SP2 and SP3.
When a signal is input, the process proceeds to step SP5 via step SP4. Here, processing such as sound generation / mute is performed based on the MIDI signal. However, note-on /
If “127” is not set in the corresponding portion of the main body tone map for the tone (program change) related to the note-off, the tone generation process is not performed. In other words, even if the tone color can be originally supported by the motherboard 100, the tone generation processing in the motherboard 100 is prohibited if the tone color is supported by the single-part sound source plug-in board.

In such a case, since the MIDI signal is directly supplied to the plug-in board via the photocoupler 117 and the connectors 121 to 129, the tone signal is synthesized in the plug-in board, and the serial IO port 107
Is supplied to the mixer 106 via the.

As described above, according to the present embodiment, it is determined whether the motherboard 100 can sound or not based on the main body tone color map. Therefore, the motherboard 100 and the plug-in boards 191 to 199 overlap to generate a tone signal. It can prevent a situation that sounds.

[0172] 5. Modifications The present invention is not limited to the embodiments described above,
Various modifications are possible. For example, in the above embodiment, the plug-in board type (PbType) is detected immediately after the power is turned on (step SP1). But PbTy
The detection of pe may be performed when a new board is mounted, or may be performed periodically at predetermined time intervals.

[0173]

As described above, according to the configurations of the first to third and sixth aspects, the parameters of the extension board can be set based on a predetermined standard. Further, according to the configurations of the fourth and fifth aspects, the second control circuit can correct the current value based on the operation information, so that the first control circuit does not need to be aware of the method of correcting the current value. . Thereby, the capability of the plug-in board can be fully exhibited under various circumstances.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a hardware configuration according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a channel configuration of the embodiment.

FIG. 3 is a block diagram illustrating a setting example of a signal flow according to the embodiment.

FIG. 4 is a block diagram illustrating a setting example of a signal flow according to the embodiment.

FIG. 5 is a flowchart of a control program according to the embodiment.

FIG. 6 is a flowchart showing a communication state between the motherboard 100 and the plug-in board.

FIG. 7 is a flowchart showing a communication state between the motherboard 100 and the plug-in board.

FIG. 8 is a flowchart showing a communication state between the motherboard 100 and the plug-in board.

[Explanation of symbols]

100 motherboard 101 CPU (tone setting control circuit) 102 ROM ROM 103 RAM
104 DSP (first sound source), 105 D / A converter, 106 mixer (first sound source), 107
··· Serial IO port, 108 ··· Music tone generator (first sound source), 109 ··· A / D converter, 110 ··· Analog input terminal, 111 ··· Timer, 112 ··· IO port, 113 ··· IO port, 114 ... IO port, 1
15: Bus, 116: Serial IO port, 117
... Photocoupler 118... MIDI input terminal (performance information input terminal) 119... MIDI output terminal 120
... Drivers, 121 to 129 ... Connectors, 150 ...
... Panel switch, 160 ... Panel display, 170 ...
... Disk drive, 180 ... Disk, 191-1
99: Plug-in board (second sound source), 200:
Sound system.

Claims (6)

[Claims] 1. A performance information input terminal, and when a timbre setting information is input, a timbre setting control circuit for setting a tone parameter based on the timbre setting information, and performance information is input from the performance information input terminal. An additional board having a first sound source for generating a first tone signal based on the performance information and the tone parameters and a second sound source for generating a second tone signal is inserted as necessary. And a tone color setting control circuit for setting tone parameters of the second sound source by supplying tone color setting information via the connector. 2. The timbre setting control circuit, after supplying identification information indicating a type of the timbre setting information to the second sound source, supplying the timbre setting information to the second sound source. The musical sound synthesizer according to claim 1, wherein: 3. A display device for displaying tone parameters of the first sound source, tone parameters of both the second sound source, and an identification display corresponding to the tone parameters of the second sound source. The tone synthesizer according to claim 1, further comprising: 4. A display device for displaying names and values of musical tone parameters, a parameter edit operator for instructing an increase or decrease of a musical tone parameter, and output of operation information when the parameter edit operator is operated. A first control circuit for displaying a name and a value of the tone parameter on the display device based on the received display information; storing a current value of the tone parameter; Is supplied, the current value is corrected based on the operation information, and a second control circuit that supplies the corrected result to the first control circuit as the display information is provided. Musical tone parameter setting device. 5. The first control circuit is provided on a main body of the musical tone synthesizer, and the second control circuit is provided on an extension board detachably attached to the main body. The musical tone parameter setting device according to claim 4, wherein: 6. A performance information input terminal, an effect setting control circuit that sets an effect parameter based on the effect setting information when the effect setting information is input, and performance information is input from the performance information input terminal. A sound source for generating the performance information and the first tone signal; and a connector into which an extension board for adding an effect to the first tone signal and outputting the second tone signal as necessary is inserted. A tone synthesizer, wherein the effect setting control circuit sets the effect parameters of the extension board by supplying the effect setting information via the connector.