JPH06348269A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To provide the electronic musical instrument which can obtain effects closer to an acoustic musical instrument by reflecting difference in effect of a sound range of keying and enables a musical performance with richer variation by positively combining the differences of the sound range in musical performance with variation in acoustic effects. CONSTITUTION:A distribution coefficient EL is loaded (500) from a distribution coefficient table wherein how much each keying position of, for example, an acoustic piano affects resonance effects is simulated on the basis of the key number of an event and the distribution coefficient EL is added to or subtracted from a cumulative distribution coefficient AL according to key depression or release (S510-S560). The multiplication coefficient of a multiplier is determined by referring to a parameter value selection table on the basis of this cumulative distribution coefficient AL, and the sound volume of a musical sound signal sent from a musical sound generation part is varied according to the multiplication coefficient. the musical sound signal which is varied in sound volume is sent to an acoustic effect circuit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, a synthesizer,
The present invention relates to an electronic musical instrument such as an electronic piano, an electronic organ, and a sound source module, and particularly to an electronic musical instrument capable of changing a sound effect based on a note-on range.

[0002]

2. Description of the Related Art In the case of an acoustic piano, a piano string is usually held down by a device called a damper, which suppresses the vibration of the string. Vibrates and is pronounced. If you play multiple keys here, not only will each string be struck by a hammer and vibrate, but each string will also resonate with each other and 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 invention filed Japanese Patent Application No. 5-5.
In No. 6334, a method was proposed in which the resonance effect was made variable by counting the number of key depressions and switching the control parameter value of the effect imparting means for amplifying the tone signal input to the resonance circuit according to the number of key depressions. In this case, it was possible to obtain a fairly natural effect as compared with the conventional case.

[0005]

However, in the case of an acoustic piano, the strings in the low frequency range are thick and long in the winding, and the strings in the high frequency range are thin and short in many cases. 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 range of keys pressed, and merely changing the resonance effect by the number of keys pressed causes a difference from the natural effect.

[0006] Therefore, the present invention reflects the difference in the effect depending on the depressed key range and makes it possible to obtain an effect closer to an acoustic musical instrument, and further, not only to bring the acoustic musical instrument closer to an acoustic musical instrument, but also to perform a performance. It is an object of the present invention to provide an electronic musical instrument that enables a more varied performance by positively connecting the difference in the musical range that is being played to the change in the acoustic effect.

[0007]

The electronic musical instrument according to claim 1, which has been made in order to achieve the above object, has a sound effect producing means M1 as shown in FIG. Alternatively, it is an electronic musical instrument that performs a performance in cooperation with an external device, and an effect relating to volume change with respect to a musical tone signal input to the acoustic effect producing means M1 or a musical tone signal output from the acoustic effect producing means M1. And a key press distribution measuring unit M3 for measuring the key press distribution state based on the key numbers that have been turned on.
And a control parameter value corresponding to the key distribution state measured by the key distribution measuring means M3 based on a predetermined correspondence between the key distribution state and the control parameter value of the effect imparting means M2. It is characterized by comprising a parameter value determining means M4 and a control means M5 for controlling the effect imparting means M2 according to the control parameter value determined by the parameter value determining means M4.

Further, as shown in FIG. 2, the electronic musical instrument according to a second aspect of the present invention further has a tone generation channel counting means M6 for counting the number of tone-on channels of note-on as compared with the electronic musical instrument according to the first aspect. The parameter value determining means M4 determines the control parameter value based on the number of sound generation channels counted by the sound generation channel counting means M6 and the key press distribution state measured by the key press distribution measuring means M3. Is characterized by.

It should be noted that the effect imparting means M2 may be configured by using, for example, a multiplier.

[0010]

According to the electronic musical instrument of claim 1 having the above-mentioned structure, the key depression distribution measuring means M3 measures the key depression distribution state based on the key-on number of the note-on, and the parameter value determining means M4 causes the key depression. The control parameter value corresponding to the key pressing distribution state measured by the key pressing distribution measuring unit M3 is determined based on the predetermined correspondence between the distribution state and the control parameter value of the effect giving unit M2. Then, the control means M5 causes the effect imparting means M to use the determined control parameter value.
When the control unit 2 controls the effect 2, the effect imparting means M2 exerts an effect regarding the volume change according to the control parameter value on the musical tone signal input to the acoustic effect producing means M1 or the musical tone signal output from the acoustic effect producing means M1. give. Therefore, effects such as resonance and reverberation at the time of sounding are changed.

Therefore, for example, if the predetermined correspondence between the key depression distribution state and the control parameter value is set in consideration of the relationship between the musical range and the resonance degree of the acoustic piano, the effect of the depressed key range is obtained. By reflecting the difference of, you can get the effect closer to an acoustic piano. The same applies to various acoustic musical instruments as well as the piano. Furthermore, the predetermined correspondence relationship between the key depression distribution state and the control parameter value may be set irrespective of the relationship between the musical range and the resonance degree in the acoustic piano. Not only making it closer to an acoustic instrument, but also positively linking the difference in the range being played to changes in the acoustic effect will enable more varied performances.

Further, even if the sound effect sound created by the sound effect sound creating means M1 has a uniform degree of effect addition (the degree of effect is uniform), the sound signal input to or output from the sound signal. On the other hand, the sound effect can be changed as a result by automatically increasing or decreasing the sound that is amplified and pronounced according to the control parameter value. Therefore, the sound effect creating means M1
The control becomes easier as compared with the case where the control parameter regarding is directly changed.

According to another aspect of the electronic musical instrument, the tone generation channel counting means M5 counts the number of note-on channels, and the parameter value determining means M3.
Determines the control parameter value based on the counted number of channels and the key press distribution state measured by the key press distribution measuring means M2.

Therefore, it is possible to obtain not only the effect depending on the depressed key range but also the difference in the number of note-on channels (for example, the difference in the number of key depressions) to obtain an effect closer to that of an acoustic instrument. it can. In this case, the weighting of the key depression distribution state and the number of note-on channels may be changed according to the acoustic instrument to be simulated. Further, a desired correspondence relationship or weighting may be performed regardless of the simulation of the acoustic musical instrument.

If a multiplier is used as the effect imparting means M2 and the multiplication coefficient, which is a control parameter, is changed, the acoustic effect such as reverb, chorus, tremolo, etc. can be achieved with a simple structure and low cost. You can change the degree of hanging.

[0016]

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. 3 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, a mode designating switch, a melody selection switch, a rhythm selection switch, a tone color selection switch (not shown above), an effect setting switch 13a and a reverb switch 13b. 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 includes, for example, a damper pedal, a soft pedal, a sostenuto pedal (all not shown) according to the type of electronic musical instrument, and the CPU 11 controls the voltage according to the amount of depression of the pedal 15 to control the volume. Or change the attenuation characteristics.

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 section 23 is used for designating a musical tone to be generated, and is composed of a plurality of keys and a key switch which opens and closes in conjunction 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 sound effect circuit 41 to generate the first D signal.
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 indicates the tone signal input from the multiplier 29,
The sound effects such as reverb, chorus, tremolo, etc. set in 3 are added.

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

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. 4 is a flowchart showing the overall processing of this embodiment.

When the power source is turned on, the CPU 11, the RAM 19, and the
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),
Depending on the setting status (set / reset) of each switch on the panel 13, for example, the corresponding LED is turned on, the selected tone color is switched, the automatic sound effect setting mode (effect setting) is performed. It is a process of switching to the reverb mode (when the switch 13a is pressed) or the reverb mode (when the reverb switch 13b is pressed).

The following pedal event processing (S300) will be described with reference to FIG. The pedal event processing includes damper pedal processing (S310 to S350) and other pedal processing (S360). 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. When the damper pedal is newly pressed, that is, when there is an on event (S310: YES), a flag indicating that the damper pedal is turned on is set in the storage unit on the RAM 19 (S320), and this damper pedal processing is executed. Upon completion, the process proceeds to the next other pedal process (S360).

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 (S330). When there is an off event (S330: YES), the damper pedal on flag that has already been set is reset (S340), and damper pedal off processing is performed (S35).
0). That is, the mute processing of the sound extended while the keyboard is pressed and the damper pedal is depressed is performed. After the process of S350, the process proceeds to another pedal process (S360).

If there is no damper pedal off event in S330, nothing is done and the process proceeds to another pedal process (S360). The other pedal processing in S360 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 flow chart 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.

Here, the key depression effect process will be described with reference to the flowchart of FIG. First, the note-on counter is incremented (S421), and key depression distribution measurement processing is performed (S422). This key depression distribution measuring process will be described later. In subsequent S423, the counter value and the cumulative distribution coefficient AL (described later) calculated in the key distribution distribution measuring process are read, the corresponding control parameter value (multiplication coefficient) is determined by referring to the parameter value selection table, and in S424. The multiplier 29 is controlled by the multiplication coefficient, and this processing ends.

By the control in S424, 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 with the changed volume is sent to the sound effect circuit 41, and a predetermined sound effect (reverb, chorus, etc.) is applied in the sound effect circuit 41 to create a sound effect sound.
It is output to the / A converter 47a.

Returning to FIG. 6, 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
From the sound source LSI, a sound generation command is given, and when sound is generated by the sound generation LSI, processing for one keyboard event is performed, and this processing 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.
This key release effect process (S480) will be described with reference to FIG.

First, the note-on counter is decremented (S481), and the key depression distribution measuring process (FIG. 9) described later is performed (S482). Then, the counter value and the cumulative distribution coefficient AL
Is read, the corresponding multiplication coefficient is determined by referring to the parameter value selection table (S483), the multiplication circuit 29 is controlled by the multiplication coefficient (S484), and this processing is ended.

Next, the key depression distribution measurement process performed in S422 of the key depression effect process (FIG. 7) and S482 of the key release effect process (FIG. 8) 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 (S500). Here, the distribution coefficient table will be described with reference to FIG. In this embodiment, when the key number is small, that is, in the low tone range, the distribution coefficient EL is large, and as the key number is large, that is, the higher the tone range is, the smaller the distribution coefficient EL is set. However, the distribution coefficient EL is set to be slightly larger in the highest tone 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.

By setting the distribution coefficient table variously, the weighting by the key depression area can be arbitrarily changed. In the example shown in FIG. 10, from the low range to the front of the highest range, in consideration of 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. 9, after the distribution coefficient EL is loaded in S500, in the case of key depression (S510: YES), the loaded distribution coefficient EL is added to the cumulative distribution coefficient AL (S520), and The process ends. On the other hand, when the key is not pressed (S510: NO) and the key is released (S530: YE).
S), the loaded distribution coefficient EL is subtracted from the cumulative distribution coefficient AL (S540). If the cumulative distribution coefficient AL resulting from the subtraction is smaller than zero (S550: YES), AL =
This is set to 0 (S560) and this process is terminated, and the cumulative distribution coefficient A
If L is zero or more (S550: NO), the process ends. It should be noted that if a negative determination is made in step S530 (that is, neither key depression nor key release), the processing ends.

As described above, 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, S4 of FIG.
23 and S483 in FIG. 8, 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.

The control parameter value (multiplication coefficient) is determined based on the value calculated by weighting the counter value and the cumulative distribution coefficient AL with a predetermined weight. In this case, the relationship between the value calculated by weighting the counter value and the cumulative distribution coefficient AL with a predetermined weight and the control parameter value (multiplication coefficient) is stored in the parameter value selection table, which is referred to. Also,
The counter value is not used as it is. For example, the number of pressed keys (or the number of sound generation channels corresponding to the pressed keys) 1 to 3 is "1", 4 to 7 is "2", and 8 or more is "3". It may be possible to classify it into three levels.

Further, the control parameter value may be determined by using 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, when the counter value is 1,
In the case of 2 to 4, the case of 5 to 7, the case of 8 or more, it may be possible to individually set according to the counter value based on the cumulative distribution coefficient AL.

Note that the execution of the key depression distribution measuring process shown in FIG. 9 corresponds to the process as the key depression distribution measuring means M3 of the present invention, and the execution of the processes of S423 of FIG. 7 and S483 of FIG. 8 determines the parameter value. This corresponds to the processing as the means M4. Further, the execution of the processing of S424 in FIG. 7 and S484 in FIG. 8 corresponds to the processing as the control means M5.

In the above embodiment, the counter value and the cumulative distribution coefficient AL are read in S423 of the key depression effect process (FIG. 7) and S483 of the key release effect process (FIG. 8), and the parameter value selection table is referred to. Although the control parameter value is determined, the control parameter value may be determined based only on the cumulative distribution coefficient AL. In that case, the increment process of S421 of the key depression effect process (FIG. 7) and the decrement process of S481 of the key release effect process (FIG. 8) may be omitted.

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. Although it has been described above that the panel 13 is provided with the effect setting switch 13a and the reverb switch 13b, when these are pressed and set, the other is automatically reset. The key press effect process of S420 and the key release effect process of S480 in FIG.
3a is set and executed in the automatic sound effect setting mode. On the other hand, when the reverb switch 13b is set, the key depression effect process of S420 and the key release effect process of S480 are not executed, and a uniform sound effect sound is created in the sound effect circuit 41 by the predetermined control parameter value. It will be.

As described above, according to the present electronic musical instrument, the key depression distribution state is measured based on the key-on number of the note-on, and the control parameter value is determined based on the cumulative distribution coefficient AL. 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. And the sound effect circuit 41
However, it gives acoustic effects such as reverb. Therefore, in the case of the above-mentioned embodiment, since the cumulative distribution coefficient AL is set in consideration of the range of the acoustic piano and the degree of the acoustic effect, the difference in the effect depending on the depressed range is reflected, and You can get an effect similar to an acoustic piano.

Not only the piano but also various acoustic musical instruments can be similarly set to sound with a closer feeling. Furthermore, the correspondence relationship between the cumulative distribution coefficient AL and the control parameter value may be set independently of the relationship between the musical range and the acoustic effect degree in the acoustic piano. Not only making it closer to an acoustic musical instrument, but also positively connecting the difference in the musical range being played to changes in various acoustic effects enables a more varied performance. For example, various settings can be made such that a very deep reverb is applied only when the highest range and the lowest range are played, or chorus and tremolo are associated with a predetermined range. In this case, a variety of acoustic effects that are not found in ordinary acoustic instruments occur,
Wider range of performance.

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.

Further, the distribution coefficient table shown in FIG. 10 was set in consideration of the length of the strings and the like so as to simulate an acoustic piano, but it may be a linear change or a step change. May be set. Further, the control parameters are not limited to those relating to one type of acoustic effect, and a plurality of control parameters may be set at the same time.

In the above embodiment, the multiplier 29 is used as the effect giving means M2, and the control parameter is the multiplication coefficient, but a switch may be used as the effect giving means M2, for example. 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.

[0058]

As described above in detail, according to the electronic musical instrument of the first aspect, the control parameter value corresponding to the key depression distribution state measured based on the key number of the note-on is determined, and the sound effect sound is generated. A volume change corresponding to the control parameter value is applied to the musical tone signal input to the producing means or the musical tone signal output, and the acoustic effect producing means provides a predetermined acoustic effect.

Therefore, for example, if the predetermined correspondence relationship between the key depression distribution state and the control parameter value is set in consideration of the relationship between the range of the acoustic piano and the degree of the sound effect, the range of the range of the key pressed is changed. By reflecting the difference in effect, it is possible to obtain an effect closer to that of an acoustic piano. Furthermore, not only bringing the instrument closer to an acoustic instrument but also positively connecting the difference in the musical range being played to changes in various acoustic effects enables a more varied performance.

According to the electronic musical instrument of the second aspect, the number of tone-on channels of note-on is counted, and the control parameter value is determined based on the counted number of tone-on channels and the key depression distribution state. . Therefore, not only the difference in the effect due to the depressed key range but also the difference in the number of note-on sound channels is reflected, and an effect closer to that of an acoustic instrument can be obtained.

[Brief description of drawings]

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

FIG. 2 is a block diagram illustrating a basic configuration of an electronic musical instrument according to claim 2 of the present invention.

FIG. 3 is a block diagram showing an electrical configuration of an electronic musical instrument according to an embodiment of the present invention.

FIG. 4 is a flowchart showing general processing of this embodiment.

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

FIG. 6 is a flowchart showing keyboard event processing of this embodiment.

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

FIG. 8 is a flowchart showing a key release effect process of the present embodiment.

FIG. 9 is a flowchart showing a key depression distribution measurement process.

FIG. 10 is an explanatory diagram showing a distribution coefficient table according to the present embodiment.

[Explanation of symbols]

M1 ... Sound effect creating means, M2 ... Effect applying means, M3
... key pressing distribution measuring means, M4 ... parameter value determining means,
M5 ... control means, M5 ... sound generation channel counting means, AL ... cumulative distribution coefficient, EL ... distribution coefficient, 10
… MIDI interface, 13… Panel, 13
a ... effect setting switch, 13b ... reverb switch,
15 ... Pedal, 21 ... Touch sensor, 23 ... Keyboard part, 27 ... Musical sound generating part, 29 ... Multiplier,
31 ... Waveform memory, 33 ... Envelope waveform memory, 41 ... Acoustic effect circuit, 47a, 47b ... D
/ A converter, 49a, 49b ... Sound system

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[Procedure amendment]

[Submission date] July 20, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

[Figure 8]

Claims (3)

[Claims] 1. An electronic musical instrument which has a sound effect producing means and which is played by itself or in cooperation with an external device, wherein the musical tone signal or the acoustic effect is inputted to the sound effect producing means. Effect imparting means for giving an effect relating to volume change to the musical tone signal output from the sound creating means, key press distribution measuring means for measuring the key press distribution state based on the key-on number of the note-on, and key press distribution Parameter value determining means for determining a control parameter value corresponding to the key pressing distribution state measured by the key pressing distribution measuring means based on a predetermined correspondence between the state and the control parameter value of the effect imparting means, An electronic musical instrument comprising: a control unit that controls the effect imparting unit according to the control parameter value determined by the parameter value determining unit. 2. A sound generation channel counting means for counting the number of sound generation channels being note-on, wherein the parameter value determining means is constituted by the sound generation channel number counted by the sound generation channel counting means and the key depression distribution measuring means. The electronic musical instrument according to claim 1, wherein the control parameter value is determined based on the measured key depression distribution state. 3. The electronic musical instrument according to claim 1, wherein the effect imparting means comprises a multiplier.