JPH07219530A - Electronic musical instrument - Google Patents

Abstract

(57) [Summary] [Purpose] Considering the number of keys pressed and the range as well as the resonance effect of the damper pedal in an acoustic piano, which produces a predetermined resonance effect. Provide an electronic musical instrument that can obtain a natural resonance effect. [Structure] Based on the key number of the event, load the distribution coefficient EL from the distribution coefficient table that simulates how each keyboard position and the damper pedal in the acoustic piano affect the resonance effect (S700), and press the key.・ Add or subtract the distribution coefficient EL loaded from the cumulative distribution coefficient AL according to the key release (S710 to S76
0). Based on this cumulative distribution coefficient AL, the control parameter value, that is, the multiplication coefficient of the multiplier is determined by referring to the parameter value selection table, and the volume change of the musical tone signal sent from the musical tone generating section is determined according to the multiplication coefficient. To do.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, a synthesizer,
Regarding electronic musical instruments such as an electronic piano, an electronic organ, and a sound source module, in particular, the operation state of a resonance effect operator, which simulates a number of keys pressed, a range, and a damper pedal in an acoustic piano, which causes a predetermined resonance effect. The present invention relates to an electronic musical instrument that can change the resonance effect based on it.

[0002]

2. Description of the Related Art In the case of an acoustic piano, the piano strings are usually held down by a device for suppressing the vibration of the strings, which is called a damper. When the keyboard is played, the hammer strikes the strings and at the same time the dampers are released to release the strings. Vibrates and is pronounced. When you play multiple keys here, not only will each string vibrate with a hammer, but they will also resonate with each other, and will produce a rich resonance, including resonance with the frame. And the more the keyboards are pressed at the same time, the greater the resonance effect.

In the case of a conventional electronic musical instrument, if the number of keys pressed increases, a musical tone corresponding to each key pressed is generated, but they are simply added together and do not resonate with each other. Absent. In addition, an effect circuit such as reverb may be used to approximate the resonance effect in the acoustic piano, but only a uniform effect set by a switch or the like on the setting panel is generated. That is, when the reverb effect switch is turned on, only a constant reverb effect is produced regardless of the number of key presses, so that a natural effect cannot be obtained.

In view of this, the applicant of the present application first discloses, in Japanese Patent Application No. 5-56334, an effect imparting means for counting the number of key depressions and amplifying a tone signal input to a resonance circuit according to the number of key depressions. It was proposed that the resonance effect was made variable by switching the control parameter value of. In this case, it was possible to obtain a fairly natural effect as compared with the conventional case. However, in the case of an acoustic piano, the strings in the low range are often thick and long with windings, and the strings in the high range are thin and short, and often three strings. Also, no dampers are attached to the strings in the highest range,
It is in the same state as the dampers are always separated.

Therefore, the degree of resonance greatly changes depending on the key range to be depressed, and merely changing the resonance effect depending on the number of keys depressed causes a difference from a natural effect. Therefore, the applicant of the present invention next filed Japanese Patent Application No. 5-13786.
In No. 4, we proposed an electronic musical instrument that also reflects the difference in effect depending on the key range that is pressed. In this case, the difference in the range being played is positively linked to the change in resonance,
A more varied performance is now possible.

[0006]

However, in the case of an actual acoustic piano, an operating element for changing the resonance effect from the usual one, such as a damper pedal, is provided. When you press this damper pedal, the dampers will be released from the strings all at once, and the dampers will be kept away from the strings even if you take your finger off the keyboard, so you can continue to vibrate them for a long time or play the next note by sustaining the sound. it can.

In addition to the strings corresponding to the keys played,
Since the dampers of the other strings are also separated from the strings, the other strings corresponding to the harmonic series of the sound also resonate. Furthermore, a damper is not usually attached to the 18 to 20 keys of the highest tone part of an acoustic piano, but if the damper pedal is depressed also in this highest tone part, the other strings will resonate and the degree of resonance will increase. Become.

In view of the above, the present invention is closer to an acoustic musical instrument in consideration of the number of keys pressed and the musical range as well as the operating state of a resonance effect operator that simulates a predetermined resonance effect such as a damper pedal in an acoustic piano. An object is to provide an electronic musical instrument that can obtain a natural resonance effect.

[0009]

The electronic musical instrument according to claim 1, which has been made in order to achieve the above object, has resonance sound producing means M1 as shown by a solid line in FIG. An electronic musical instrument that is played alone or in cooperation with an external device, and has an effect relating to volume change with respect to a musical tone signal input to the resonance tone creating means M1 or a tone signal output from the resonance tone creating means. An effect imparting means M2 for giving an effect, a counting means M3 for counting the number of note-on tone generation channels, a key-depression distribution measuring means M4 for measuring a key-depression distribution state based on the key-on number for the note-on, and an acoustic piano. Detects whether the resonance effect operator, which simulates something that causes a predetermined resonance effect, such as a damper pedal, is on or off Operation detecting means M5, the number of sound generation channels counted by the counting means M3, the key distribution state measured by the key distribution measuring means M4, and the resonance effect operation detected by the operator detecting means M5. Based on the on / off state of the child, the control parameter is referred to by referring to a predetermined correspondence relationship between the key distribution state and the on / off state of the resonance effect operator and the control parameter value for the resonance sound creating means M1. Parameter value determining means M6 for determining a value, and the parameter value determining means M6
And a control means M7 for controlling the resonance sound producing means in accordance with the parameter value determined by.

According to the electronic musical instrument of the present invention having the above-mentioned structure, the counting means M3 counts the number of sounding channels for which note-on is performed, and the key depression distribution measuring means M4.
Indicates the key press distribution state based on the key number of which the note is on, and the operator detection means M5 imitates a resonance effect operator simulating what causes a predetermined resonance effect such as a damper pedal in an acoustic piano. Detects if it is off.

Then, the parameter value determination means M6 turns on the counted number of sound generation channels, the measured key depression distribution state, and the detected resonance effect operator.
Based on the off state, the control parameter value is determined with reference to a predetermined correspondence relationship between the key depression distribution state and the on / off state of the resonance effect operator and the control parameter value for the resonance sound creating means M1. Then, when the control means M7 controls the effect imparting means M2 by the determined control parameter value, the effect imparting means M2 changes the tone signal input to the resonance tone creating means M1 or the tone signal output from the resonance tone creating means. On the other hand, the effect of changing the volume is given. Therefore, effects such as resonance and reverberation at the time of sounding are changed.

Therefore, for example, the predetermined correspondence relationship between the key distribution state and the on / off state of the resonance effect operator and the control parameter value is defined as the relationship between the musical range and the resonance degree in the acoustic piano and the resonance effect operator such as a damper pedal. If you set it in consideration of the relationship between the sound level and the resonance degree, not only the number of note-on channels that are note-on (for example, the number of key presses), but also the range of notes that are pressed and the resonance effect control -By reflecting the difference in the effect depending on the off, it is possible to obtain an effect closer to that of an acoustic piano.
The same applies to various acoustic keyboard instruments as well as the piano.

Further, even if the resonance sound created by the sound effect creating means M1 has a uniform degree of effect application (the degree of effect is uniform), it does not affect the tone signal input to or output from the tone signal. As a result, the acoustic effect can be changed by automatically amplifying the sound to be amplified and reduced according to the control parameter value. Therefore, the control becomes easier as compared with the case where the control parameter relating to the resonance sound creating means M1 is directly changed.

The electronic musical instrument according to a second aspect is the electronic musical instrument according to the first aspect, as shown by a broken line in FIG. 1, for each of the note-on key numbers and the resonance effect operators. Correspondingly, there is provided a contribution coefficient storage means M8 for pre-storing a contribution coefficient showing a predetermined correspondence with the control parameter value, and the parameter value determination means M is provided.
6 is a contribution coefficient storage means M8, which is a contribution coefficient corresponding to the key depression distribution state measured by the key depression distribution measuring means M4 and the on / off state of the resonance effect operator detected by the operator detecting means M5. Further, the control parameter value is determined based on the read contribution coefficient.

By setting the contribution coefficient for each key and each resonance effect operator in this way, the process for setting the control parameter value is simplified. Further, since the contribution coefficient can be set for each key individually, it is possible to make detailed settings rather than making a rough distinction between, for example, a high range, a middle range, and a low range, and obtain a natural resonance effect closer to that of an acoustic instrument.

Further, the contribution coefficient stored in the contribution coefficient storage means M8 has the effect of the key depression of each key in the acoustic piano on the resonance effect at the time of sound generation from the acoustic piano, as described in claim 3. It is conceivable to adopt a model that simulates the degree of influence.

For example, when the contribution coefficient is determined by simulating that for an acoustic piano,
As described in claim 4, it is conceivable that the determination is made in consideration of the string length of the acoustic piano and the presence or absence of a damper. The string length of a typical acoustic piano becomes shorter from the low range to the high range, and since the 18 to 20 keys in the highest range do not have a damper installed, the part where the damper is installed has a long string length. As an example, a setting method may be considered in which the contribution coefficient is sequentially reduced in accordance with the above, and the contribution coefficient is increased as the pitch increases in the highest pitch range.

If a multiplier is used as the effect imparting means M2 and the multiplication coefficient, which is a control parameter, is changed as described in claim 5, the resonance effect can be achieved even though the structure is simple and the cost is low. It is possible to change the degree of the influence of.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the electronic musical instrument of the present invention will be described below in order to further clarify the constitution and operation of the present invention described above. FIG. 2 is a block diagram showing the electrical configuration of the electronic musical instrument of one embodiment.

The MIDI interface 10 controls delivery of performance information transmitted and received between an external device (not shown) and the CPU 11. The external device referred to here is a device that supplies performance information to the electronic musical instrument or generates a musical tone based on the performance information from the electronic musical instrument. For example, an MID of an electronic piano, an electronic organ, an electronic keyboard, or the like.
An electronic musical instrument or the like having an I interface function is used. The MIDI interface 10 is directly connected to the CPU 11 without the system bus 12.

The CPU 11 controls each part of the electronic musical instrument according to the control program stored in the program memory of the ROM 17. This CPU 11 has a system bus 1
The panel 13 and the pedal 15 are connected without going through 2, and the ROM 17 and the RAM 1 through the system bus 12.
9, the touch sensor 21, the display panel unit 25, the musical sound generating unit 27, the multiplier 29 (as the effect imparting means M2), and the acoustic effect circuit 41 are connected.

The panel 13 includes various switches such as a power switch 13a and a mode designating switch 13b, a melody selection switch, a rhythm selection switch, and a tone color selection switch (not shown). The set / reset state of each switch is detected by the panel scan circuit provided inside, and the data on the set state of the switch detected by the panel scan circuit in the panel 13 is under the control of the CPU 11. It is stored in the RAM 19. Various information such as the current setting state of the switches on the panel 13 is displayed on the display panel unit 25.

The pedal 15 corresponds to the resonance effect operator in the present invention, and there are, for example, a damper pedal, a soft pedal, a sostenuto pedal (all not shown), etc., depending on the type of electronic musical instrument, and the amount of depression of the pedal 15 In response to this, the CPU 11 controls the voltage to change the volume and the attenuation characteristic. The pedals of the damper, software, sostenuto, etc. may be provided with corresponding pedals, or one pedal may be used in common and each function may be exerted by changing the setting.

The ROM 17 stores tone color data and various other fixed data in addition to the program for operating the CPU 11 described above. The tone color data memory stores frequency numbers, waveform numbers, envelope waveform numbers, mode data, etc., which are data for synthesizing tone vibration.

Each data stored in this tone color data memory is designated by a tone color point. That is, the tone color pointer is changed according to the panel operation and keyboard operation, and each data designated by the changed tone color pointer is converted into the waveform memory 31 and the envelope waveform memory 33.
Read from. Then, it is supplied to the musical sound generating section 27 after being subjected to a predetermined calculation.

The table for determining the attack speed, attack level, decay speed, decay level, etc., and the parameter value selection table are the R
It is provided in OM17. On the other hand, the RAM 19 has a CP
The U11 work area, various registers, counters, flags, etc. for controlling the electronic musical instrument are defined, and R
A data area in which the necessary data stored in the OM 17 is transferred and stored, a plurality of registers in which the data necessary for sound emission corresponding to the state of each switch of the panel 13 is set, and a tone generation section are unused channels. It has an assign memory for storing data to be allocated to, a storage area for storing performance information, and the like.

The panel 13 stored in the RAM 19
The data relating to the setting state of the switch is referred to by the CPU 11 or the like when the sound is produced and as needed. In addition, the key depression map and the note-on counter that store the on / off state of the keyboard unit 23 described above are also stored in the RAM 1
9 is provided.

The keyboard portion 23 is used for designating a musical sound to be generated, and is composed of a plurality of keys and a key switch which opens / closes in association with key pressing / key releasing operations of these keys. The touch sensor 21 detects the on / off state of the key switch and sends it to the CPU 11.

The musical tone generating section 27 reads and reproduces musical tone waveform data stored in the waveform memory 31 to generate and output musical tone signals corresponding to various musical instruments. CPU 1 in response to input from the keyboard unit 23
Based on the control data output from No. 1, the musical sound generating unit 27
Reads out the musical tone waveform data and envelope data corresponding to the designated tone color and volume from the waveform memory 31 and the envelope waveform memory 33, and outputs it as a musical tone signal in which the envelope data is added to the musical tone waveform data.

The output musical tone signal is divided into two systems, one of which is passed through the multiplier 29 and the acoustic effect circuit 41 to the first D
It is supplied to the A / A converter 47a, and the other is supplied to the second D / A converter 47b through without passing through the multiplier 29 and the sound effect circuit 41. The multiplier 29 receives the parameter control signal from the CPU 11 (the parameter in this case is the multiplier 2).
The multiplication coefficient of 9) is applied to the sound effect circuit 41 after a predetermined change in volume is added to the musical sound signal sent from the musical sound generating section 27. On the other hand, the sound effect circuit 4
1 outputs a sound effect sound such as a resonance sound by giving a predetermined sound effect (for example, a resonance effect) to the music sound signal sent from the music sound generating unit 27 according to a parameter control signal from the CPU 11.

The digital tone signals output from the tone generator 27 through the multiplier 29 and the sound effect circuit 41 and through are the first and second D / A converters 47a and 4a.
It is converted into an analog tone signal by 7b and supplied to the first and second sound systems 49a and 49b, respectively. Each of the sound systems 49a and 47b includes an amplifier and a speaker, and amplifies the analog musical tone signal supplied from the D / A converters 47a and 47b with a predetermined gain according to the volume data given from the CPU 11 and converts it into an acoustic signal. It is a well-known thing that emits sound.

An adder for adding the musical tone signal output from the acoustic effect circuit 41 and the musical tone signal output through from the musical tone generating section 27 is provided, and one D / A converter and one sound system are provided. You may make each one. next,
The operation of this embodiment will be described. FIG. 3 is a flowchart showing the general processing of this embodiment.

When the power is turned on, the CPU 11, RAM 19, and
Initialization of the sound source LSI and the like is performed. In the following S200, a panel event process, in S300, a pedal event process,
In S400, keyboard event processing is performed, and S4
After the keyboard event processing of 00, the process returns to S200 and the following processing is repeated. Each event processing S200, S30 below
0 and S400 will be described in detail.

First, in the panel event process (S200),
The process is related to the panel 13, and is a process of turning on the corresponding LED, switching to the set tone color, or the like, depending on the setting status (set / reset) of each switch on the panel 13.

The following pedal event processing (S300) will be described with reference to FIG. This pedal event processing includes damper pedal processing (S310 to S370) and other pedal processing (S380). After the damper pedal process is first performed, other pedal processes are performed.

First, in S310, it is determined whether or not there is an on event of the damper pedal. If the damper pedal is newly depressed, that is, if there is an on event (S310: YES), a flag indicating that the damper pedal has been turned on is set in the storage unit on the RAM 19 (S310).
320) and the key depression effect process (S330) are executed. This key depression effect process will be described later. The damper pedal process is ended by the key depression effect process of S330, and the process proceeds to the next other pedal process (S380).

On the other hand, if there is no damper pedal on event in S310, it is determined whether or not there is a damper pedal off event (S340). When there is an off event (S340: YES), the damper pedal on flag that has already been set is reset (S350), and the key release effect process (S360) is executed. This key release effect processing will be described later. After the key release effect process of S360, the damper pedal off process is performed (S
370). That is, the mute processing of the sound extended while the keyboard is pressed and the damper pedal is depressed is performed. After the damper pedal off process of S370, other pedal processes (S
380).

If there is no damper pedal off event in S340, nothing is done and the process proceeds to other pedal processing (S380). The other pedal processing in S380 is, for example, soft pedal processing or sostenuto pedal processing, which sets / resets a flag according to on / off of an event, or slides a variable resistor according to the degree of pedal depression. This is an operation for controlling the voltage by performing, for example.

Next, referring to the flowchart of FIG.
The keyboard event process (S400) will be described. In the keyboard event process, it is first determined whether or not there is an on event of the keyboard (S410), and if there is an on event, a key depression effect process (S420) is executed. This S4
The key depression effect process of 20 is the same as the key depression effect process S330 of the pedal event process (in FIG. 4) described above, and the details thereof will be described later. Following the key depression effect process of S420, various tone parameters are loaded into the tone generator LSI (S
430). The musical tone parameters are, for example, attack speed and attack level indicating rising speed and magnitude, decay speed and decay level indicating falling speed and magnitude, read (pronounced) frequency value, start of waveform memory reading. Addresses, etc., which are loaded into the tone generator LSI.

After that, a sounding process is performed (S440),
This keyboard event processing ends. That is, the CPU 11
When a sounding instruction is given to the sound source LSI from the sound source LSI, the sounding LSI produces a process for one keyboard event, and this process is repeated every time there is an event.

On the other hand, if there is no on event in S410, it is judged whether or not there is an off event (S450), and if there is an off event (S45).
0: YES), it is determined whether the damper is on (S460). If there is no off event in S450 (S450: NO), that is, if there is neither an onvent nor an off event, this keyboard event process is terminated without doing anything. If the damper is on at S460 (S
460: YES) also ends this keyboard event process without doing anything.

On the other hand, if a negative determination is made in S460, that is, if the damper is off, the release speed is read from the ROM 17 and loaded into the sound source LSI (S470).
The subsequent key release effect process (S480) is performed, and then the process ends.
The key release effect process of S480 is the same as the key release effect process S360 of the pedal event process (in FIG. 4) described above, and the details thereof will be described later.

Next, the above-mentioned S330 (FIG. 4) and S4
The content of the key depression effect process executed in 20 (FIG. 5) will be described with reference to the flowchart in FIG. First, the note-on counter is incremented (S510), and key depression distribution measurement processing is performed (S520). This key depression distribution measuring process will be described later. In the following S530, the counter value and the cumulative distribution coefficient AL (described later) calculated in the key press distribution measurement process are read, the corresponding control parameter value (multiplication coefficient) is determined by referring to the parameter value selection table, and S5
At 40, the multiplier 29 is controlled by the multiplication coefficient, and this processing ends.

By the control in S540, the multiplier 29
In (1), a volume change based on the determined multiplication coefficient is applied to the digital musical tone signal output from the musical tone generating unit 27 and before being input to the acoustic effect circuit 41. The musical tone signal to which the volume change has been given is sent to the acoustic effect circuit 41, a predetermined resonance effect is given in the acoustic effect circuit 41 to create a resonant sound, and the resonant sound is output to the first D / A converter 47a.

Next, the key release effect processing in S360 (FIG. 4) and S480 (FIG. 5) will be described with reference to FIG.
First, the note-on counter is decremented (S61
0), the key depression distribution measuring process (FIG. 8) described later is performed (S62).
0). Then, the counter value and the cumulative distribution coefficient AL are read, the corresponding control parameter value (multiplication coefficient) is determined by referring to the parameter value selection table (S630), and the multiplier 29 is controlled by the multiplication coefficient (S640). ) This process ends.

Next, S52 of the key depression effect processing (FIG. 6).
The key depression distribution measurement process performed in S620 of the 0 and key release effect process (FIG. 7) will be described with reference to the flowchart of FIG. In the key press distribution measurement process, first, the distribution coefficient EL is loaded from the distribution coefficient table based on the key number having an event (S700). Here, the distribution coefficient table will be described with reference to FIG.

In this embodiment, not only each key but also a damper pedal and a soft pedal are included as key numbers. As shown in FIG. 9, the distribution coefficient EL is set for each of 88 sounds from the lowest note "A0" to the highest note "C8", and the damper pedal and the soft pedal. In the present embodiment, the distribution coefficient EL corresponding to the lowest pitch "A0" is set to "65", which is the largest among the 88 sounds, and roughly speaking, the distribution coefficient EL becomes smaller as it gets closer to the treble range. Is set to. However, the width is small though there is some up and down on the way.

Then, the distribution coefficient EL is made to increase again for about 18 to 20 keys in the highest pitch range. This is because in the case of an acoustic piano, a damper is not attached to the string in the highest pitch range, and the damper is always in the same state as it is separated, so that the state is simulated. Therefore, the highest note "C
The distribution coefficient EL of "8" is 48, which is about the same value as "F1" belonging to the bass range.

The distribution coefficient EL of the damper pedal is 70.
Thus, the distribution coefficient EL65 corresponding to the lowest tone "A0" is set larger. The distribution coefficient EL of the soft pedal is 40. The distribution coefficient EL corresponds to the above-mentioned contribution coefficient. By setting the distribution coefficient table variously, the weighting by the key depression area can be arbitrarily changed. In the example shown in FIG. 9, from the low range to the front of the highest range, considering the length of the string in the acoustic piano (it becomes shorter from the lower range to the higher range), the damper is not attached in the highest range. In consideration of the degree of resonance of the strings, it is possible to simulate how much each keyboard position in an acoustic piano affects the resonance effect.

Returning to FIG. 8, after the distribution coefficient EL is loaded in S700, in the case of key depression (key depression here includes turning on of the pedal 15) (S710: YES), the cumulative distribution coefficient is calculated. The loaded distribution coefficient EL is added to AL (S720), and this processing ends.

On the other hand, instead of pressing the key (S710: NO), the key is released (the release of the key here includes the turning off of the pedal 15).
In the case of (S730: YES), the loaded distribution coefficient EL is subtracted from the cumulative distribution coefficient AL (S740). If the cumulative distribution coefficient AL resulting from the subtraction is smaller than zero (S
750: YES), AL = 0 is set (S760), this processing is terminated, and if the cumulative distribution coefficient AL is zero or more (S75).
0: NO), the process ends. It should be noted that if a negative determination is made in step S730 (that is, neither key depression nor key release), the processing ends.

In this way, the cumulative distribution coefficient AL of this embodiment is
Simulates the case of an acoustic piano,
This reflects the degree of influence on the resonance effect when the currently depressed key range is sounded. Then, S5 in FIG.
30 and S630 of FIG. 7, the control parameter value, that is, the multiplication coefficient in the multiplier 29 is determined by referring to the parameter value selection table based on the counter value and the cumulative distribution coefficient AL. explain.

For example, based on the counter value and the cumulative distribution coefficient AL, (counter value) × (standard multiplication coefficient constant) ×
A control parameter value (multiplication coefficient) is determined by performing a predetermined weighting operation such as (cumulative distribution coefficient AL). It should be noted that if the method of obtaining the multiplication coefficient is determined so as to be weighted by the counter value corresponding to the number of key depressions and the cumulative distribution coefficient AL corresponding to the key depression distribution and the on / off state of the pedal, The method is not limited to the above.

The counter value is not used as it is. For example, when the number of pressed keys (or the number of sounding channels corresponding to pressed keys) is 1 to 3, "1" and 4 to 7 are "2". , 8
It is also possible to classify the above into three levels, such as “3”. Further, the control parameter value may be determined by first dividing the cumulative distribution coefficient AL as a reference and then referring to the counter value corresponding to the divided cumulative distribution coefficient AL. The parameter value selection table in this case is, for example, for a certain cumulative distribution coefficient AL,
If the counter value is 1, 2 to 4, 5 to 7,
For example, in the case of 8 or more, it may be possible to set individually according to the counter value based on the cumulative distribution coefficient AL.

The execution of the processing of S530 in FIG. 6 and S630 in FIG. 7 corresponds to the processing as the counting means M3,
The execution of the key depression distribution measuring process shown in FIG. 8 corresponds to the process as the key depression distribution measuring means M4 of the present invention. Further, the pedal event processing of FIG. 4 corresponds to the processing as the manipulator detection means M5 of the present invention, and the execution of the processing of S530 of FIG. 6 and S630 of FIG. 7 corresponds to the processing of the parameter value determination means M6. The execution of the processing of S540 of FIG. 6 and S640 of FIG. 7 corresponds to the processing as the control means M7.

In the above embodiment, the control parameter value is determined by referring to the parameter value selection table.
The control parameter value may be determined by executing a predetermined program process. As described above, according to the present electronic musical instrument, the control parameter is based on the key distribution state measured based on the key number being note-on and the cumulative distribution coefficient AL calculated based on the on / off state of the pedal. Determine the value. This control parameter value, that is, a multiplication coefficient in this case, and the multiplier 29 changes the volume of the tone signal based on this multiplication coefficient. Then, the acoustic effect circuit 41 gives an effect relating to resonance such as reverb, and the resonance sound given the resonance effect is produced. Therefore, in the case of the above embodiment, the cumulative distribution coefficient AL is set in consideration of the range of resonance in the acoustic piano and the relationship of the resonance degree due to the on / off of the resonance effect operator such as the damper pedal, so that the acoustic piano becomes more acoustic piano. You can get a similar effect.

By setting the distribution coefficient EL for each key number and pedal, the processing for setting the control parameter value becomes simple. Also, since the distribution coefficient can be set for each key individually, it is possible to make detailed settings instead of making a rough distinction such as high range, middle range, and low range.
A natural resonance effect that is closer to that of an acoustic instrument can be obtained.

Although one embodiment of the present invention has been described above, the present invention is not limited to this, and various embodiments can be adopted without departing from the scope of the present invention. For example, in the above-described embodiment, the multiplier 29 is provided between the musical sound generating unit 27 and the acoustic effect circuit 41 to change the volume of the musical sound signal before being input to the acoustic effect circuit 41. It may be provided between the acoustic effect circuit 41 and the first D / A converter 47a so as to give a volume change to the musical tone signal output from the acoustic effect circuit 41.

In the above embodiment, the multiplier 29 is used as the effect applying means M2, and the control parameter is the multiplication coefficient. However, for example, a switch may be used as the effect applying means M2. The control parameter in that case is "ON /
"OFF". Furthermore, in the above embodiment, the number of key depressions is counted and used for determining the control parameter value, but this may be the number of sound generation channels instead of the number of key depressions. Depending on the model, one key may use multiple channels, and the tone settings (for example, piano, organ,
Depending on the harpsichord, etc.), the number of pronunciation channels used may also change. Therefore, the number of sound generation channels may be counted and used to determine the control parameter value.

[0060]

As described in detail above, according to the electronic musical instrument of the present invention, the counted number of sound generation channels, the measured key distribution state, and the detected ON / OFF state of the resonance effect operator are detected. A control parameter value is determined based on the control parameter value, and a volume change corresponding to the control parameter value is applied to the musical sound signal input to or output from the musical sound effect creating unit, and the sound effect creating unit produces a predetermined acoustic effect. give.

Therefore, not only the difference in the number of sounding channels that are note-on (for example, the difference in the number of keys pressed), but also the difference in the range of keys pressed and the effect of turning on / off the resonance effect operator are reflected. It is possible to obtain an effect closer to that of an acoustic piano.

Further, by setting the contribution coefficient for each key and the resonance effect operator as described in claim 2, the process for setting the control parameter value becomes simple. Also, since the contribution coefficient can be set for each key individually,
Rather than making a rough distinction in the low range, you can make detailed settings and obtain a natural resonance effect that is closer to that of an acoustic instrument.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a basic configuration of an electronic musical instrument of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of the electronic musical instrument of the embodiment.

FIG. 3 is a flowchart showing general processing of this embodiment.

FIG. 4 is a flowchart showing a pedal event process of this embodiment.

FIG. 5 is a flowchart showing a keyboard event process of this embodiment.

FIG. 6 is a flowchart showing a key depression effect process of this embodiment.

FIG. 7 is a flowchart showing a key release effect process of the present embodiment.

FIG. 8 is a flowchart showing a key depression distribution measurement process.

FIG. 9 is an explanatory diagram showing a distribution coefficient table according to the present embodiment.

[Explanation of symbols]

M1 ... Resonant sound creating means, M2 ... Effect applying means, M
3 ... Counting means, M4 ... Key pressing distribution measuring means, M5 ...
Manipulator detection means, M6 ... Parameter value determination means, M7
... control means, M8 ... contribution coefficient storage means, AL ... cumulative distribution coefficient, EL ... distribution coefficient, 10 ... MIDI interface, 13 ... panel, 15 ... pedal, 21 ... touch sensor, 23 ... keyboard part, 27 ... tone generation Part, 29 ... Multiplier, 31 ... Waveform memory, 33 ... Envelope waveform memory, 41 ... Acoustic effect circuit, 47
a, 47b ... D / A converter, 49a, 49b ... Sound system

Claims (5)

[Claims] 1. A resonance sound producing means is provided, and only the device itself is provided,
Alternatively, it is an electronic musical instrument that performs performance in cooperation with an external device, and gives an effect of changing the volume to a tone signal input to the resonance tone creating means or a tone signal output from the resonance tone creating means. Means, a counting means for counting the number of note-on sounding channels, a key press distribution measuring means for measuring the key press distribution state based on the note-on key numbers, and a predetermined resonance of a damper pedal or the like in an acoustic piano. A resonance effect operator, which is provided by simulating what produces an effect, detects whether the resonance effect operator is in the on state or the off state, the number of sound generation channels counted by the counting means, and the key depression distribution. The key distribution distribution measured by the measuring means and the resonance effect operation detected by the operator detecting means. Based on the on / off state of the child, the control parameter value is determined by referring to a predetermined correspondence relationship between the key depression distribution state and the on / off state of the resonance effect operator and the control parameter value of the effect imparting means. An electronic musical instrument, comprising: a parameter value determining means for controlling the effect imparting means, and a control means for controlling the effect imparting means according to the parameter value determined by the parameter value determining means. 2. The electronic musical instrument according to claim 1, wherein a contribution coefficient indicating a predetermined correspondence with the control parameter value is provided for each of the note-on key number and the resonance effect operator. The parameter value determining means stores the contribution coefficient storage means to be stored in advance, and the parameter value determining means turns on the resonance effect operator detected by the key depression distribution measuring means and the resonance effect operator detected by the operator detecting means. An electronic musical instrument configured to read a contribution coefficient corresponding to an off state from the contribution coefficient storage means and determine the control parameter value based on the read contribution coefficient. 3. The electronic musical instrument according to claim 2, wherein the contribution coefficient stored in the contribution coefficient storage means has a resonance effect when a key of each key in the acoustic piano is sounded by the acoustic piano. An electronic musical instrument characterized by simulating the degree of influence. 4. The electronic musical instrument according to claim 3, wherein the contribution coefficient simulating the degree of influence of each key depression in the acoustic piano on the resonance effect at the time of sounding from the acoustic piano is the acoustic coefficient. An electronic musical instrument characterized by being determined in consideration of the string length of a piano and the presence or absence of a damper. 5. The electronic musical instrument according to any one of claims 1 to 4, wherein the effect imparting means comprises a multiplier.