JP3026699B2 - Electronic musical instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, synthesizers,
The present invention relates to an electronic musical instrument such as an electronic piano, an electronic organ, and a sound source module, and more particularly to an electronic musical instrument that can change 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 for suppressing the vibration of the string. When a keyboard is played, a hammer strikes the string, and at the same time the string is released by opening the damper. Vibrated and pronounced. When you play multiple keys, each string not only vibrates when struck by a hammer, but also resonates with each other's vibrations, producing a rich sound including resonance with the frame. And, the more keys are played at the same time, the greater the resonance effect becomes.

[0003] In the case of a conventional electronic musical instrument, when the number of keys pressed increases, musical tones corresponding to each depressed key are generated. However, they are simply added together and resonate with each other. Absent. In order to approximate the resonance effect of the acoustic piano, an effect circuit such as reverb may be used, but only a uniform effect set by a switch or the like on a setting panel is generated. That is, when the reverb effect switch is turned on, only a constant reverb effect is generated regardless of the number of keys pressed, so that a natural effect cannot be obtained.

In view of this, the applicant of the present application has filed Japanese Patent Application No.
No. 1240 proposes a device having a plurality of output sequences, counting the number of key presses, and switching the output sequence according to the number of key presses to make the resonance effect variable. In this case, a considerably natural effect was obtained as compared with the related art.

[0005]

However, in the case of an acoustic piano, the strings in the low range are often thick and long due to the winding, and the strings in the high range are thin and short in many cases. Also, no damper is attached to the highest range string,
It is always in the same state as the damper is away. Therefore, the degree of resonance greatly varies depending on the range of keys pressed, and simply changing the resonance effect by the number of keys pressed has caused a difference from a natural effect.

Accordingly, the present invention reflects the difference in the effect depending on the range of the key being depressed, and makes it possible to obtain an effect closer to that of an acoustic instrument. It is an object of the present invention to provide an electronic musical instrument capable of positively linking a difference in a sound range to a change in a sound effect and enabling a more varied performance.

[0007]

In order to achieve the above object, the electronic musical instrument according to the first aspect of the present invention plays a performance by itself or in cooperation with an external device as shown in FIG. An electronic musical instrument, a plurality of output sequences M1 set by changing the degree of sound effects, a key-press distribution measuring means M2 for measuring a key-press distribution state based on a key number of which a note is turned on, Sound channel counting means M5 for counting the number of sound channels
And the key press distribution state measured by the key press distribution measuring means M2 and the sound count counted by the sound channel count means M5 based on a predetermined correspondence relationship between the key press distribution state, the number of sound channels, and the output sequence. Based on the number of channels , from among the plurality of output sequences,
The output sequence determining means M3 for determining the output sequence of the above, and the output sequence M1 determined by the output sequence determining means M3, so that a tone signal based on the key number that is turned on is output. And output sequence switching means M4 for switching the output sequence M1.

[0008]

[0009]

According to the electronic musical instrument of the present invention having the above configuration, the key press distribution measuring means M2 measures the key press distribution state based on the key number to which the note is turned on, and the sounding channel count means M5 is turned on. Count the number of sound channels that are playing. Then, the output sequence determining means M3
Are based on a predetermined correspondence relationship between the key press distribution state, the number of sound channels, and the output sequence, and the key press distribution state and sound channel count means M measured by the key press distribution measurement means M2.
Based on the number of sound channels counted by 5 ,
An output sequence M1 for outputting a tone signal is determined from the plurality of output sequences . The output sequence switching means M4 is turned on by the determined output sequence M1.
The output sequence M1 is switched so that a tone signal based on the key number is output. Each output series M1 gives a musical sound signal a sound effect of a set degree, and sounds. As the acoustic effect, various types of reverb (resonance), chorus, and the like can be considered.

Therefore, for example, the key depression distribution state and the sound generation
If the predetermined correspondence between the number of channels and the output sequence is set in consideration of the relationship between the range of the acoustic piano and the degree of resonance, the difference in the effect due to the range of the key being pressed is reflected, and a more acoustic piano is created. A similar effect can be obtained. The same applies to various acoustic instruments as well as pianos. Furthermore, the predetermined correspondence between the key press distribution state, the number of sounding channels, and the output sequence may be set irrespective of the relationship between the range of the acoustic piano and the degree of resonance. In addition to simply approaching acoustic instruments, if the difference in the range being played is positively linked to changes in various sound effects,
A more varied performance is also possible. In addition to the difference in the effect depending on the range of the key being pressed, the difference in the number of note-on sound channels (for example, the difference in the number of pressed keys)
Is reflected, and an effect closer to an acoustic instrument can be obtained. In this case, the weighting between the key depression distribution state and the number of note-on sounding channels may be changed according to the acoustic instrument to be simulated. Also, a desired correspondence or weighting may be performed irrespective of the simulation of the acoustic musical instrument.

[0011]

[0012]

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of the electronic musical instrument of the present invention will be described below. FIG. 2 is a block diagram showing an electrical configuration of the electronic musical instrument according to one embodiment.

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

The CPU 11 controls each section of the electronic musical instrument according to a control program stored in a program memory of the ROM 17 and, in addition to a resonance circuit selection table (to be described in detail later) and a selector 29 provided in the ROM 17, the present invention. Output series switching means M4
Function is realized. The CPU 11 has the panel 13 and the pedal 1 without passing through the system bus 12.
5 is connected, and the RO
M17, RAM 19, touch sensor 21, display panel unit 25, musical sound generation unit 27, and selector 29 are connected.

The panel 13 includes various switches such as a power switch, a mode designation switch, a melody selection switch, a rhythm selection switch, a timbre selection switch (not shown), an effect setting switch 13a, and a reverb switch 13b. The set / reset state of each switch is detected by a panel scan circuit provided therein. Data on the switch set state detected by the panel scan circuit in the panel 13 is controlled by the CPU 11. It is stored in the RAM 19. Various information such as the current setting status of the switches on the panel 13 is displayed on the display panel unit 25.

The pedals 15 include, for example, a damper pedal, a soft pedal, a sostenuto pedal (all not shown) and the like according to the type of the electronic musical instrument. The CPU 11 controls the voltage according to the depression amount of the pedal 15 to control the volume. Or the attenuation characteristic is changed.

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 a frequency number, a waveform number, an envelope waveform number, mode data, and the like, which are data for synthesizing a tone vibration.

Each data stored in the tone data memory is specified by a tone point. That is, the timbre pointer is changed according to the panel operation and the keyboard operation, and each data designated by the changed timbre pointer is stored in the waveform memory 31 and the envelope waveform memory 33.
Is read from. Then, it is supplied to the tone generator 27 after a predetermined operation is performed.

Note that a table for determining an attack speed, an attack level, a decay speed, a decay level, and the like, and a resonance circuit selection table are provided in the ROM.
17. On the other hand, the RAM 19 has the CPU 1
1, a work area, various registers, counters, flags, and the like for controlling the electronic musical instrument.
17 is a data area in which necessary data is transferred and stored, a plurality of registers in which data necessary for sound emission corresponding to the state of each switch of the panel 13 are set, and a tone generator are used as unused channels. It has an assignment memory for storing data to be assigned to the memory, a storage area for storing performance information, and the like.

The panel 13 stored in the RAM 19
The data regarding the setting state of the switch is referred to by the CPU 11 or the like as necessary at the time of sound generation. The key press map for storing the on / off state of the keyboard unit 23 and the note-on counter are also stored in the RAM 1.
9.

The keyboard section 23 is used for designating a musical tone to be generated, and is composed of a plurality of keys and key switches which are opened and closed in conjunction with key press / release 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 tone generator 27 generates and outputs tone signals corresponding to various musical instruments by reading and reproducing the tone waveform data stored in the waveform memory 31. CPU 1 according to an input from keyboard unit 23
1 based on the control data output from
Reads out the tone waveform data and envelope data corresponding to the designated tone and volume from the waveform memory 31 and the envelope waveform memory 33, and outputs them as tone signals obtained by adding envelope data to the tone waveform data. The output tone signal is supplied to the selector 29.

The selector 29 functions as a part of the output sequence switching means M4 of the present invention. In response to a control signal from the CPU 11, the output sequence of the tone signal sent from the tone generator 27, in this case, the resonance to be output. This is to select a circuit. The output from the selector 29 is supplied to the first to fourth resonance circuits 41.
The signal is supplied to the adder 45 via .about.44 or through (without any intervention). The first to fourth resonance circuits 41 to 44
In the present embodiment, the degree of the resonance effect (the depth of the reverb) is set to be larger (the reverberation is deeper) as it goes from the first resonance circuit 41 to the fourth resonance circuit 44.

The adder 45 is a well-known adder for adding and outputting the tone signals output from the resonance circuits 41 to 44 and the like. The digital tone signal output from the adder 45 is converted into an analog tone signal by the D / A converter 47,
The sound is supplied to the sound system 49. The D / A converter 47 may be inserted between the selector 29 and the resonance circuits 41 to 44.

The sound system 49 includes an amplifier and a speaker. The sound system 49 amplifies the analog tone signal supplied from the D / A converter 47 at a predetermined gain in accordance with the volume data given from the CPU 11 and converts the signal into an acoustic signal. It is a well-known thing that emits sound. Next, the operation of the present embodiment will be described. FIG. 3 is a flowchart showing the general processing of this embodiment.

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

First, the panel event process (S200)
This is a process related to the panel 13, and depending on the setting status (set / reset) of each switch on the panel 13, for example, turns on a corresponding LED, switches to a set tone, an automatic sound effect setting mode (effect setting). This is processing for 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) is shown.
This will be described with reference to FIG. This pedal event processing includes damper pedal processing (S310 to S350) and other pedal processing (S360). After the damper pedal processing is performed first, other pedal processing is performed.

First, at S310, it is determined whether or not a damper pedal ON event has occurred. 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 (S320), and the damper pedal process is performed. The processing ends, and the processing shifts to the next other pedal processing (S360).

On the other hand, if there is no on-event of the damper pedal in S310, it is determined whether or not there is an off-event of the damper pedal (S330). If an off event has occurred (S330: YES), the already set damper pedal on flag is reset (S340), and damper pedal off processing is performed (S35).
0). That is, the sound that has been extended while the keyboard is pressed and the damper pedal is depressed is silenced. After the process of S350, the process proceeds to another pedal process (S360).

If there is no event of turning off the damper pedal in S330, nothing is performed, and the process proceeds to other pedal processing (S360). The other pedal processing in S360 is, for example, soft pedal processing or sostenuto pedal processing, for example, setting / resetting a flag according to ON / OFF of an event, and sliding a variable resistor according to the degree of pedal depression. This is an operation of controlling the voltage by performing such operations.

Next, with reference to the flowchart of FIG. 5,
The keyboard event processing (S400) will be described. In the present keyboard event process, it is first determined whether or not an on event of the keyboard has occurred (S410). If an on event has occurred, a key pressing effect process (S420) is executed.

The previously described with reference to the flowchart of FIG. 6 wherein the key-depression effect processing. First, the note-on counter is incremented (S421), and a key press distribution measurement process is performed (S422). This key press distribution measurement processing will be described later. In S423, the counter value and the cumulative distribution coefficient AL (described later) calculated in the key press distribution measurement process are read, and the output series value (resonance circuit number to be output) is determined with reference to the resonance circuit selection table. , And S424, the output sequence value is loaded into the selector 29, and the process ends.

Returning to FIG. 5 , following the key depression effect processing in S420, various musical tone parameters are loaded into the tone generator LSI (S420).
430). The musical tone parameters include, for example, an attack speed and an attack level indicating a rising speed and a magnitude, a decay speed and a decay level indicating a falling speed and a magnitude, a reading (producing) frequency value, and a waveform memory reading. These are start addresses and the like, and are loaded into the sound source LSI.

Thereafter, a sound generation process is performed (S440).
This keyboard event processing ends. That is, the CPU 11
Gives a tone generation instruction to the tone generator LSI. When the tone is generated by the tone generation process, a process for one keyboard event is performed.

On the other hand, if there is no ON event in S410, it is determined whether there is an OFF event (S450), and if there is an OFF event (S45).
0: YES), it is determined whether or not the damper is on (S460). If there is no off-event in S450 (S450: NO), that is, if there is no on-vent and no off-event, this keyboard event process ends without doing anything. If the damper is ON in S460 (S
(460: YES), the keyboard event processing is terminated 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 tone generator LSI (S470).
After performing the subsequent key release effect process (S480), the process ends.
The key release effect processing (S480) will be described with reference to FIG.

First, the note-on counter is decremented (S481), and a key press distribution measuring process (FIG. 8 ) described later is performed (S482). Then, the counter value and the cumulative distribution coefficient AL
Is read, the output series value is determined with reference to the resonance circuit selection table (S483), and the output series value is selected by the selector 2
9 (S484) and terminates this processing.

Next, the key depression distribution measurement processing performed in S482 of S422 and key release effect processing of the key-depression effect processing (FIG. 6) (Fig. 7) will be described with reference to the flowchart of FIG. In the key depression distribution measurement process, first, the distribution coefficient EL is loaded from the distribution coefficient table based on the key number at which the event occurred (S500). It will now be described with reference to FIG. 9 the distribution coefficient table. In this embodiment,
When the key number is small, that is, in the low frequency range, the distribution coefficient EL
Is set so that the distribution coefficient EL becomes smaller as the key number becomes larger, that is, as it approaches the treble range. However, the distribution coefficient EL is set to be slightly larger in the highest range. This is because, in the case of an acoustic piano, a damper is not attached to the string in the highest range and the state is always the same as the state where the damper is separated, so that the state is simulated.

By setting this distribution coefficient table in various ways, the weighting by the key pressed area can be changed arbitrarily. In the example shown in FIG. 9 , the length of the strings of the acoustic piano (becomes shorter as going from the lower range to the higher range) is considered from the low range to just before the highest range, and no damper is attached in the highest range. In consideration of the degree of resonance due to the strings, it is simulated as much as possible how each keyboard position on the acoustic piano affects the resonance effect.

Returning to FIG. 8 , after the distribution coefficient EL is loaded in S500, if the key is pressed (S510: YES), the loaded distribution coefficient EL is added to the accumulated distribution coefficient AL (S520), and The process ends. On the other hand, when the key is not depressed (S510: NO) but is released (S530: YE)
S), the loaded distribution coefficient EL is subtracted from the accumulated distribution coefficient AL (S540). If the cumulative distribution coefficient AL resulting from the subtraction is smaller than zero (S550: YES), AL =
0 (S560), terminates this process, and calculates the cumulative distribution coefficient A
If L is equal to or greater than zero (S550: NO), the process ends. Note that also in the case of a negative determination in S530 (that is, neither key depression nor key release), the process 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 the resonance effect when the currently depressed range is produced. Then, S4 in FIG. 6
23 and S483 of FIG. 7 , the output series value, that is, the resonance circuit No. to be output, is referred to based on the counter value and the cumulative distribution coefficient AL by referring to the resonance circuit selection table. Is determined, and a method of this determination will be described.

It is conceivable to select a through output or an output from the first to fourth resonance circuits 41 to 44 based on a value obtained by performing a predetermined weighting on the counter value and the cumulative distribution coefficient AL. . In this case, the relationship between the value obtained by performing the predetermined weighting on the counter value and the cumulative distribution coefficient AL and the output sequence value is stored in the resonance circuit selection table. Also, the counter value is not used as it is, for example, the number of keys pressed (or the number of sounding channels corresponding to the key pressed)
It is also conceivable to classify about three levels, such as 1-3 for "1", 4-7 for "2", and 8 or more for "3".

Further, the output sequence value may be determined by referring to the counter value corresponding to the divided cumulative distribution coefficient AL based on the cumulative distribution coefficient AL. In the resonance circuit selection table in this case, for example, for a certain cumulative distribution coefficient AL, when the counter value is 1, the output sequence value is “0 (through output)”, and when the counter value is 2, the output sequence value is “1”. , The output sequence value “2” when the counter value is 3 to 5, the output sequence value “3” when the counter value is 6 to 8, and the output sequence value “4” when the counter value is 9 or more.
In such a manner, individually set according to the counter value based on the cumulative distribution coefficient AL.

[0046] Incidentally, in response to processing as a key depression distribution measuring means M2 execution invention key depression distribution measurement processing shown in FIG. 8, S423, executes the output-sequence decision processing in S483 of FIG. 7 in FIG. 6 This corresponds to the processing as the means M3. Also figure
6 of S424, execution of the processing of S484 in FIG. 7 corresponds to the processing as output series switching unit M4.

In the above embodiment, in S423 of the key depression effect processing (FIG. 6 ) and S483 of the key release effect processing (FIG. 7 ), the counter value and the cumulative distribution coefficient AL are read, and the resonance circuit selection table is referred to. Although the output sequence value is determined, the output sequence value may be determined based only on the cumulative distribution coefficient AL. In that case, the key depression effect processing (FIG. 6 ) S42
1 in the increment processing and the key release effect processing (FIG. 7 )
The decrement process of 481 may be omitted.

In the above embodiment, the output sequence value is determined with reference to the resonance circuit selection table. However, the output sequence 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 one of them is pressed down and set, the other is automatically reset. Figure
The key press effect processing in S420 and the key release effect processing in S480 in 5 are executed in a state where the effect setting switch 13a is set and the automatic sound effect setting mode is set. On the other hand, when the reverb switch 13b is set, the key depression effect processing in S420 and the processing in S480 are performed.
The key release effect process is not executed, but is uniformly loaded into a predetermined resonance circuit (for example, the second resonance circuit 42), and a certain reverb is applied.

As described above, according to the present electronic musical instrument, the key press distribution state is measured based on the key number of which the note is turned on, and the output sequence value is determined based on the cumulative distribution coefficient AL. Then, in order to output the tone signal from the determined output sequence (through or the first to fourth resonance circuits 41 to 44), the tone signal is given a sound effect of a set degree, and is sounded. Therefore, in the case of the above embodiment, since the cumulative distribution coefficient AL is set in consideration of the relationship between the range of the acoustic piano and the degree of resonance, the difference in the effect due to the range of the key being pressed is reflected.
An effect closer to that of an acoustic piano can be obtained.

It should be noted that not only the piano but also various acoustic musical instruments can be set to have a similar feeling by setting the same. Further, the correspondence between the cumulative distribution coefficient AL and the output series value may be set irrespective of the relationship between the range of the acoustic piano and the degree of resonance. In addition to simply approaching an acoustic instrument, if the difference in the musical range being played is positively linked to changes in various sound effects, a more varied performance can be achieved. For example, various settings can be made, such as applying a very deep reverb only when the highest range and the lowest range are played, or associating chorus and tremolo with a predetermined range. In this case, a variety of sound effects not available in a normal acoustic instrument are generated, and the range of performance is expanded.

Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and various embodiments can be adopted without departing from the gist of the present invention. For example, in the above-described embodiment, the distribution coefficient table shown in FIG. 9 is set in consideration of the length of a string so as to simulate an acoustic piano, but may be simply a linear change or a step-like change. A setting that changes may be used. In the above embodiment, four resonance circuits 41 to 44 are provided, but the number is not limited.

Further, in the above embodiment, the number of key presses is counted and used for determining the output sequence value, but this may be the number of sound channels instead of the number of key presses. Depending on the model, a single key may use a plurality of channels, and the number of sound channels to be used may change depending on the tone setting (for example, piano, organ, harpsichord, etc.). Therefore, the number of sounding channels may be counted and used to determine an output sequence value.

[0053]

As described in detail above, according to the electronic musical instrument of the first aspect, the key press distribution state and the number of sounding channels measured based on the key number of which the note-on is performed.
Then, an output sequence is determined, and a tone signal is output based on the determined output sequence. Each output sequence gives a sound signal of a set degree to a musical sound signal and produces sound. Therefore,
For example, if the predetermined correspondence between the keypress distribution state and the output sequence is set in consideration of the relationship between the range and the degree of resonance in the acoustic piano, the difference in the effect due to the range of the key being pressed is reflected. An effect closer to that of an acoustic piano can be obtained. Furthermore, if the difference in the range of music being played is positively linked to changes in various sound effects as well as simply approaching an acoustic instrument, a more varied performance can be achieved. Also,
Also reflects the difference in the number of sound channels that are turned on.
To achieve an effect closer to that of an acoustic instrument.
it can.

[0054]

[Brief description of the 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 showing an electrical configuration of the electronic musical instrument according to one embodiment of the present invention.

FIG. 3 is a flowchart illustrating a general process of the present embodiment.

FIG. 4 is a flowchart illustrating pedal event processing according to the present embodiment.

FIG. 5 is a flowchart illustrating keyboard event processing according to the present embodiment.

FIG. 6 is a flowchart illustrating a key pressing effect process according to the present embodiment.

FIG. 7 is a flowchart illustrating a key release effect process according to the present embodiment.

FIG. 8 is a flowchart illustrating a key press distribution measurement process.

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

[Explanation of symbols]

M1: output series, M2: key press distribution measuring means, M
3 output sequence determination means M4 output sequence switching means M5 sounding channel counting means AL cumulative distribution coefficient EL distribution coefficient 10 MI
DI interface, 13 ... Panel, 13a ... Effect setting switch, 13
b: reverb switch, 15: pedal, 21: touch sensor, 2
3 ... keyboard part, 27 ... tone generator, 29 ... selector, 3
DESCRIPTION OF SYMBOLS 1 ... Waveform memory, 33 ... Envelope waveform memory, 41-44 ... (1st-4th) resonance circuit, 45 ... Adder, 47 ... D / A converter, 4
9 ... Sound system

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-166896 (JP, A) JP-A-4-166895 (JP, A) JP-A-60-91395 (JP, A) 62099 (JP, A) JP-A-4-121790 (JP, A) JP-A-2-110500 (JP, A) JP-A-3-107898 (JP, A) JP-A-2-93693 (JP, A) JP-A-5-188950 (JP, A) JP-A-1-198797 (JP, A) JP-A-2-199500 (JP, A) JP-A-3-168699 (JP, A) JP-A-4-204598 (JP, A) JP-A-60-91393 (JP, A) JP-A-5-80753 (JP, A) JP-A-2-131790 (JP, U) JP-B-3-30158 (JP, B2) 62-26789 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) G10H 1/00-1/46

Claims (1)

(57) [Claims] 1. An electronic musical instrument that performs by itself or in cooperation with an external device, wherein the electronic musical instrument is based on a plurality of output sequences set by changing the degree of a sound effect and a key number on which a note is turned on. group and depressed distribution measuring means for measuring a depressed distribution, and sound channel counting means for counting the number of sound channels that are note-on, a corresponds relationship between key depression distribution polyphony channels and the output sequence Te The key press distribution state measured by the key press distribution measuring means and the number of sounding channels counted by the sounding channel counting means ,
An output sequence determining unit for determining an output sequence for outputting a tone signal from the output sequence; and an output sequence determined by the output sequence determining unit .
An electronic musical instrument comprising: output sequence switching means for switching the output sequence so as to output a tone signal based on a key number of which a note-on is performed .