JPH06250657A - Electronic musical instrument - Google Patents

Abstract

(57) [Abstract] [Object] The present invention relates to an electronic musical instrument capable of assigning a function other than the original pitch designating function to the foot keyboard and performing the function by using the foot keyboard as a switch such as a panel. It is an object of the present invention to provide an electronic musical instrument that can be easily played by a player. An electronic musical instrument according to the present invention has a plurality of functions and a plurality of switches for instructing each of these functions, and an electronic musical instrument that performs a predetermined function in accordance with instructions from a predetermined switch is a foot keyboard. 32, a storage unit 11 that stores the key of the foot keyboard and the switch in association with each other, a specifying unit 40 that specifies that the foot keyboard should be used as a switch for instructing each of the functions, and the specifying unit. When a key on the foot keyboard is pressed in the state of being instructed by, the processing equivalent to the case where the switch corresponding to the pressed key is operated in accordance with the correspondence relationship stored in the storage means. And processing means 10 for performing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument which can be played by assigning a function other than the original pitch designating function to the foot keyboard.

[0002]

2. Description of the Related Art In recent years, electronic musical instruments having a foot keyboard such as an electronic organ have been developed and put into practical use. A general external perspective view of such an electronic organ is shown in FIG.

In FIG. 2, reference numeral 31 is an upper keyboard and 32 is a lower keyboard, which are collectively referred to as a hand keyboard 16. Also,
32 is a foot keyboard. The hand keyboard 16 is used to generate a melody sound or an accompaniment sound, and the foot keyboard 32 is used to generate a low-tone musical sound such as a bass sound.

Reference numeral 40 is a panel portion, 41 is a time signature wooden portion, and 42 is a mouth stick portion. These are hereinafter collectively referred to as an operation panel 17. Reference numeral 43 is a foot switch (43a is a left foot switch, 43b is a right foot switch), and 44 is an expression pedal.

The panel section 40 constituting the operation panel 17 is a certain area above the hand keyboard 16, and the time signature section 41 is the hand keyboard 1
A fixed area on the left end side of 6 is a fixed area between the upper keyboard 30 and the lower keyboard 31, and the mouth stick part 42 is provided with various switches for designating various functions provided in the electronic organ. There is.

The expression pedal 44 is used to change the volume of a musical sound to be generated according to the amount of depression. The foot switch 43 is a switch that is provided at the left and right ends of the expression pedal 44 and is turned on / off by moving and pressing the foot to the left or right. The foot switch 43 is used, for example, to give an instruction to exert a predetermined music effect.

In the conventional electronic organ constructed as described above, for example, the upper keyboard 30 and the lower keyboard 31 are operated by both hands to generate a melody or an accompaniment sound, while the foot keyboard 32 is operated by the left foot to produce a bass sound. After that, the expression pedal 44 is operated with the right foot to perform the performance while adjusting the volume. Further, when it is desired to change the timbre, the music effect, etc. during the performance, various switches of the panel section 40, the time signature section 41 or the mouth stick section 42 are operated by hand, or the foot switch 43 is operated by the right foot to make a desired change. It is designed to obtain timbre and music effects.

However, in the electronic organ configured as described above, it is extremely difficult for a beginner or a player who is not accustomed to playing the electronic organ to perform the desired performance by making full use of the above-mentioned keyboards and switches. . Especially, it is very difficult for beginners and the like to play the foot keyboard. Therefore, it is the actual situation that a beginner or the like is actually playing without using the foot keyboard.

In such a case, a beginner or the like, instead of playing the foot keyboard, leaves the parts of the foot keyboard to automatic accompaniment by using the automatic accompaniment function generally provided in the electronic organ, and plays only the hand keyboard. Often Therefore, the foot keyboard is rarely used.

Further, the electronic organ is provided with various functions for expanding the range of performance, and each function is designated by a switch. One of such functions is, for example, a registration function for storing the setting state of switches. When the performer uses the registration function during the performance, it is necessary to press the registration switch provided on the mouth stick portion 42 with a finger, for example.

However, there is a problem that it is difficult for beginners and the like to operate the above-mentioned various functions by operating the switches during the performance.

Further, when the player tries to operate the foot switch 43 provided on the expression pedal 44, there is a problem that the expression pedal 44 moves together with a beginner so that the volume changes. It was

[0013]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the various problems described above, and allows a foot keyboard, which is rarely used by beginners, to function as a switch such as an operation panel. It is an object of the present invention to provide an electronic musical instrument which allows a beginner or the like to easily perform the function and can play the function, and is excellent in operability.

[0014]

In order to achieve the above object, an electronic musical instrument of the present invention has a plurality of functions and a plurality of switches for instructing each of these functions, and responds to instructions from a predetermined switch. In an electronic musical instrument capable of exhibiting predetermined functions, the foot keyboard, the storage means that stores the key of the foot keyboard and the switch in association with each other, and the foot keyboard should be used as a switch for instructing each function. When the key of the foot keyboard is pressed in the state where the instruction is given by the specifying means, the correspondence is made to the pressed key according to the correspondence relationship stored in the storage means. And a processing unit that performs the same processing as when the switch is operated.

[0015]

The present invention is intended to cause the foot keyboard to act as a switch of, for example, an operation panel when a predetermined designation is made by the designation means. That is, in the present invention, the keys of the foot keyboard and the switches provided on the operation panel, for example, are stored in advance in the storage means in association with each other. Then, the designation means designates that the foot keyboard should be used as a switch for function instruction, and when the foot keyboard is pressed in that state, the pressed key is responded in accordance with the correspondence relationship stored in the storage means. The same process as when the switch is operated, that is, the process corresponding to the switch event is performed.

[0016] With this, by depressing the foot keyboard with a foot, it is possible to perform the same operation as operating a switch such as an operation panel with a hand. Therefore, during the performance, the switch is operated by a hand to specify various functions. The operation is easier than the operation.
Therefore, it is possible to realize an electronic musical instrument with excellent operability, which enables even a beginner or the like to play by making full use of various functions provided in the electronic musical instrument.

Further, since the foot switch and the expression pedal can be operated independently by allocating the foot switch provided on the expression pedal to the foot keyboard, for example, even beginners can perform the functions of the foot switch and the expression pedal. You can fully use it.

[0018]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of an embodiment of an electronic musical instrument according to the present invention. In addition,
As the external configuration of the present electronic musical instrument, for example, the one shown in FIG. 2 is used.

This electronic musical instrument has a central processing unit (hereinafter referred to as "C
"PU" 10, read-only memory (hereinafter "R")
11), random access memory (hereinafter referred to as “OM”)
Main parts of a "RAM" 12, a key scan circuit 13, a switch scan circuit 14, and a sound source 15 are connected to each other by a system bus 20. The system bus 20 is composed of, for example, an address bus, a data bus, a control signal line, and the like.

The CPU 10 corresponds to a processing means and controls the entire electronic musical instrument according to a control program stored in the ROM 11. For example, CPU10
Retrieves the tone color number from the panel section 40 via the switch scan circuit 14, and also selects the upper keyboard 30 or the lower keyboard 3
A key number or the like is fetched from 1 via the key scan circuit 13, a tone color parameter is read out from the ROM 11 based on the key number and the like, and is sent to the sound source 15 to perform a process of generating a predetermined musical tone.

In the ROM 11, as described above, the CPU
In addition to storing 10 control programs, various fixed data used by the CPU 10 are stored. The ROM 11 corresponds to a storage means, and each key of the foot keyboard 32 and the operation panel 17 which are directly related to the features of the present invention.
Also, a table that stores the correspondence between the foot switch 43 and each switch is stored.

The ROM 11 also stores tone color parameters for generating musical tones of a predetermined tone color, automatic accompaniment data for performing automatic accompaniment, and the like. A plurality of types of timbre parameters are provided corresponding to timbres and the like, and each timbre parameter is composed of, for example, waveform address, frequency data, envelope data, filter coefficient, and the like.

The RAM 12 temporarily stores various data used by the CPU 10 for processing, and various registers, counters, flags and the like for controlling the electronic musical instrument are defined.

The table, tone color parameters, automatic accompaniment data, and the like are stored in the ROM instead of the ROM 11.
It may be configured to be stored in the AM 12. in this case,
For example, a floppy disk device is connected to the system bus 20, and a table, tone color parameters, automatic accompaniment data, etc. are stored in the floppy disk. A table, tone color parameters, automatic accompaniment data, etc. may be loaded into the RAM 12.

The key scan circuit 13 includes a hand keyboard 1
6, an upper keyboard 30, a lower keyboard 31, and a foot keyboard 32 are connected. The key scan circuit 13 controls transmission / reception of data between the upper keyboard 30, the lower keyboard 31, the foot keyboard 32 and the CPU 10. That is, the key scan circuit 13 detects keys pressed or released on the upper keyboard 30, the lower keyboard 31, and the foot keyboard 32, and turns on / off each key.
It is sent to the CPU 10 as data indicating the off state.

The above-mentioned upper keyboard 30, lower keyboard 31, and foot keyboard 3
2 has a plurality of keys for designating the pitch. Further, the foot keyboard 32 is used as a switch for the operation panel 17 and the like when the foot key mode is set to the foot key mode by a switch to be described later. The foot key numbers attached to the keys on the foot keyboard 32 are P1, P2, P
3, ...

Each key of the upper keyboard 30, the lower keyboard 31, and the foot keyboard 32 has a key switch which is turned on / off by a key pressing operation or a key releasing operation. The upper keyboard 30, the lower keyboard 31, and the foot keyboard 32 send data indicating the on / off state of each key switch to the key scan circuit 13.

Specifically, the key scan circuit 13 sends a scan signal to the upper keyboard 30, the lower keyboard 31, and the foot keyboard 32. Upper keyboard 30, lower keyboard 31 and foot keyboard 3
In response to this scan signal, 2 sends back data indicating the on / off state of the key switch to the key scan circuit 13.

The key scan circuit 13 sends data indicating the on / off state of each key switch received from the upper keyboard 30, the lower keyboard 31, and the foot keyboard 32 to the CPU 10 via the system bus 20. This data is stored in the RAM 12 via the system bus 20 under the control of the CPU 10.

The switch scan circuit 14 includes an operation panel 17 (panel section 40, time signature section and mouth stick section 4).
2), the foot switch 43 and the expression pedal 44 are connected. This switch scan circuit 1
Reference numeral 4 controls transmission / reception of data between the CPU 10 and the operation panel 17, the foot switch 43, and the expression pedal 44.

That is, the switch scan circuit 14 detects the change of the switch of the operation panel 17 or the change of the foot switch 43, and sends the data indicating ON / OFF of each switch to the CPU 10. Also, the switch scan circuit 1
4 detects a change in the position of the expression pedal 44 and sends data indicating the current position of the pedal to the CPU 10.

Though not shown in detail, the operation panel 17 is equipped with various switches for controlling the electronic musical instrument. In this embodiment, it is assumed that the panel section 40 is provided with a foot-key changeover switch (switch number S1) as a specifying means that is directly related to the features of the present invention.

The foot-key selector switch is a switch for switching the electronic musical instrument to the foot-key mode or the normal performance mode. The foot key selector switch, for example, changes the electronic musical instrument from the foot key mode to the normal performance mode each time the button is pressed,
Alternatively, it is realized as a toggle switch that alternately switches from the normal performance mode to the foot-key mode.

Here, the foot-key mode is a mode in which each key of the foot-keyboard 32 is assigned to one of the switches of the operation panel 17 or the foot switch 43, and the key-pressing of the foot-keyboard 32 is operated by pressing the switch. . In this case, the foot keyboard 3
No pronunciation corresponding to the key depression of 2 is made. The normal performance mode is a mode in which the keyboard 32 is used as a key for pitch indication.

Further, the panel section 40 is equipped with, for example, a tone color selection switch, a rhythm selection switch, a sound effect switch and the like. The timbre selection switch is used to select one timbre from among the plurality of timbres prepared by the electronic musical instrument, and the rhythm selection switch is also used to select one rhythm from the plurality of rhythms.
The sound effect switch is used to specify the kind of sound effect.

Further, in this embodiment, five registration switches 1 to 5 (switch number S
2 to S6) are provided. Here, the registration switch is a switch for selecting a registration memory storing the setting states of the operation panel 17 and the foot switch 43. By selecting a desired registration memory with this registration switch, the electronic musical instrument can be set to a predetermined state with one touch.

The expression pedal 44 is
It is used to control the volume of a musical sound to be generated according to the amount of depression. Further, the foot switch 43 is, as described above, the expression pedal 4
4 is provided on the left foot switch 43a.
(Switch number S7) and right foot switch 43b (switch number S8). This foot switch 4
3 is used, for example, to indicate a sound effect.

Data indicating on / off of each switch of the operation panel 17 and the foot switch 43, and data indicating the current position of the expression pedal 44 are sent to the switch scan circuit 14.

Specifically, the switch scan circuit 14
Sends a scan signal to the operation panel 17, the foot switch 43, and the expression pedal 44. In response to this, data indicating ON / OFF of each switch of the operation panel 17 and the foot switch 43 and data indicating the current position of the expression pedal 44 are returned to the switch scan circuit 14.

The switch scan circuit 14 receives the data indicating the on / off state of each switch received from the operation panel 17 and the foot switch 43, or the data indicating the current position of the pedal received from the expression pedal 44, from the system bus 20. To the CPU 10 via. This data is stored in the RAM 12 via the system bus 20 under the control of the CPU 10.

The MIDI interface 60 connected to the CPU 10 is an M interface between the electronic musical instrument and an external device.
It controls the delivery of IDI data. The external device may be, for example, a personal computer or a sequencer that processes MIDI data.

The sound source 15 comprises a plurality of oscillators. This sound source 15 has a waveform memory 5
0 is connected. The waveform memory 50 is, for example, a ROM
Composed of. The waveform memory 50 stores, for example, pulse code modulated (PCM) tone waveform data. The tone waveform data stored in the waveform memory 50 is composed of a plurality of types of tone waveform data corresponding to each tone color in order to realize a plurality of tone colors.

The tone generator 15 receives the tone color parameters and the tone generation start command from the CPU 10, reads the tone waveform data stored in the waveform memory 50, adds an envelope to the tone tone waveform data, generates a digital tone signal, and performs D / A conversion. It is sent to the container 51.

The D / A converter 51 is a well-known one which converts an input digital signal into an analog signal and outputs it. The tone signal converted into the analog signal by the D / A converter 51 is supplied to the amplifier 52.

The amplifier 52 amplifies the input analog musical tone signal with an amplification factor according to the depression amount of the expression pedal 44 and outputs it. This amplifier 5
The analog tone signal that has been subjected to the predetermined amplification in 2 is supplied to the speaker 53.

The speaker 53 is a well-known one which converts an analog musical tone signal as an electric signal into an acoustic signal. By the speaker 53, a musical sound corresponding to the depression of a key on the upper keyboard 30, the lower keyboard 31, or the foot keyboard 32 is emitted.

An example of the table formed in the ROM 11 used in this embodiment is shown in FIG. In this embodiment, registration switches 1 to 5 (switch numbers S2 to S6) for keys P1, P2, P3, ... Of the foot keyboard 32,
The left foot switch 43a (switch number S7) and the right foot switch 43b (switch number S8) are assigned.

The switch assigned to each key of the foot keyboard 32 is not limited to the above, and the operation panel 1
The seven switches, the foot switch 43, or the like can be arbitrarily assigned.

Next, the operation of the electronic musical instrument having the above-mentioned configuration will be described with a focus on the processing in the case where the switches such as the operation panel 17 are assigned to the foot keyboard 32 to operate.

FIG. 3 is a flow chart showing the main routine of this electronic musical instrument, which is started by turning on the power. That is, when the power is turned on, first, initialization processing is performed (step S10).

This initialization process is a process of setting the internal state of the CPU 10 to the initial state and setting the registers, counters, flags, etc. defined in the RAM 12 to the initial state. Further, in this initialization process, a process of sending predetermined data to the sound source 15 and preventing an unnecessary sound from being generated when the power is turned on is also performed.

When the initialization process is completed, the panel scan process is performed (step S11). The details of this panel scan processing are shown in the flowchart of FIG.

In the panel scan process, first, the presence or absence of a panel event is checked (step S20). This is done as follows. That is, first, the switch scan circuit 14 scans the operation panel 17 and the foot switch 43 to capture panel data indicating the on / off state of each switch by a bit string.

Next, the panel data read last time (which is already stored in the RAM 12) is compared with the panel data read this time, and it is checked whether or not there is a different bit. Then, when there is a different bit, it is recognized that there is a panel event, and an event map in which the bit corresponding to the changed switch is turned on is created. The identification of the switch having the event to be performed below is performed by referring to this event map.

As for the presence / absence of an event in the expression pedal 44, similarly to the above, the switch scan circuit 14 scans the expression pedal 44 to take in the pedal data indicating the current position of the pedal, and then the previously read pedal data ( (It is already stored in the RAM 12) is compared with the pedal data read this time, and if there is a difference, it is recognized that there is a pedal event, but this is omitted because it is not directly related to the present invention. ing.

When it is determined in step S20 that there is no panel event, the panel scan processing routine returns without performing any processing. On the other hand, if it is determined that there is a panel event, then it is checked whether or not the foot key changeover switch has been turned on (step S21). This is done by referring to the event map described above.

If it is determined that the foot key switch is turned on, it is checked whether or not the foot key flag is "1" (step S22). Here, the foot key flag is a flag defined in the RAM 12, and stores whether the electronic musical instrument is in the foot key mode or the normal performance mode.

If it is determined that the foot key flag is "1", that is, the electronic musical instrument is in the foot key mode, the foot key flag is set to "0" (step S23). On the other hand, when the foot key flag is "0", that is, when it is determined that the electronic musical instrument is in the normal performance mode, the foot key flag is set to "1" (step S24). The toggle function of the foot key changeover switch is realized by the processing of steps S21 to S24. This foot key flag is referred to in a key scan process described later.

If it is determined in step S21 that the switch having the event is not the foot key changeover switch, other switch processing is performed (step S2).
5). This process is a process for the event of each switch provided on the operation panel 17 such as the tone color selection switch, the rhythm selection switch, the sound effect switch and the foot switch 43, but since it is not directly related to the gist of the present invention. , Detailed description is omitted.

When the processing of step S23, S24 or S25 is completed, the panel scan processing routine returns and returns to the main routine.

In the main routine, a key scan process is then performed (step S12). Details of this key scan process are shown in the flowchart of FIG.

In the key scan process, it is first checked whether or not there is a foot key event (step S30). This is done as follows. That is, first, by scanning the foot keyboard 32 with the key scan circuit 13, the key data indicating the on / off state of each key of the foot keyboard 32 is fetched as a bit string corresponding to each key.

Next, the previously read key data (which is already stored in the RAM 12) is compared with the currently read key data to check whether there is a different bit. Then, when there is a different bit, it is recognized that there is a key event, and an event map in which the bit corresponding to the changed key is turned on is created. The key identification in the sounding process (or the mute process) performed below is performed by referring to this event map.

When it is determined in the above step S30 that there is no foot key event, the process proceeds to step S36. On the other hand, if it is determined that there is a foot key event, then it is checked whether or not the foot key flag is "1" (step S31).

When it is determined that the foot key flag is "0", that is, the normal performance mode, it is checked whether or not the foot key event is a key depression event (step S33). This is performed by checking whether or not the bit in the key data read this time, which corresponds to the bit that is turned on in the event map, is "1".

If it is determined that the event is a key depression event, foot key sounding processing is performed (step S34).
In the foot-key pronunciation processing, tone color parameters (waveform address, frequency data, envelope data, filter coefficient, etc.) are read from the ROM 11 according to the tone color designated at that time and the key number of the depressed key, and the tone color parameter is read by the tone generator 15 To generate a tone signal. Thereby, as described above, the musical sound is emitted through the D / A converter 51, the amplifier 52, and the speaker 53.

If it is determined in step S33 that the event is not the key depression event, it is recognized that the event is the key release event, and the foot key mute processing is performed (step S35). The foot-key muffling process is realized by sending predetermined data to the sound source 15 to add an envelope with a short release time to the musical tone being sounded.

When it is determined in step S31 that the foot key flag is "1", that is, the foot key mode is set, the function allocation processing is performed (step S32). This function assignment processing is the same processing as when the switch corresponding to the pressed key on the foot keyboard 32 is recognized by referring to the table stored in the ROM 11 and the event of the recognized switch is present. Is to do.

For example, when the key with the foot key number P6 is pressed, the same process as when the switch with the switch number S8, that is, the left foot switch 43a is pressed, for example, the process of giving a predetermined acoustic effect is performed. Be seen.

When the above processing for the foot keyboard 32 is completed, the upper keyboard scanning processing is then performed (step S36). A detailed description of this upper keyboard processing is omitted,
Almost the same process as the process for the foot keyboard 32 is performed. That is, first, it is checked whether or not there is an upper keyboard event, and when it is determined that there is an event, it is checked whether or not it is a key pressing event, and when it is determined that it is a key pressing event. When it is determined that the sounding process is not the key depression event, the mute process is performed.

Next, the lower keyboard scan process is performed (step S37). The lower keyboard process is the same as the upper keyboard process, and therefore its explanation is omitted. After that, the process returns from this key scan processing routine and returns to the main routine.

In the main routine, MIDI processing is performed (step S13). Briefly described, this MIDI processing produces sound according to the MIDI information sent through the MIDI interface circuit 60, or sends musical sound data generated by the electronic musical instrument to an external device through the MIDI interface circuit 60. It is a process to do.

Next, sequencer processing is performed (step S14). This sequencer process is a process of reading out the automatic accompaniment data stored in the ROM 11 and producing a sound. Automatic accompaniment is realized by this sequencer processing.

When this sequencer processing is completed, the process returns to step S11 and the same processing is repeated again. As described above, when an event corresponding to a panel operation or a keyboard operation occurs in the process of repeatedly executing steps S11 to S14 of the main routine, various functions of the electronic musical instrument are realized by performing a process corresponding to the event. .

As described above, according to this embodiment, a table storing the correspondence between each key of the foot keyboard 32 and each switch of the operation panel 17 or the foot switch 43 is created in the ROM 11 in advance, When the key of the foot keyboard 32 is pressed in the foot key mode by the key switch, the musical tone indicating the original pitch of the foot keyboard 32 is not emitted, but the pressed key is displayed in the above table. The same processing as when the switch of the associated operation parameter 17 or the foot switch 43 is operated is performed.

As a result, the same operation as the switch of the operation panel 17 can be performed by pressing the foot keyboard 32 with the foot instead of manually operating the switch of the operation panel 17, so that the hand can be changed during the performance. Operation becomes easier than operating switches to specify various functions.

Also, use the foot to switch the expression switch 4
4 is operated by pressing the foot keyboard 32 instead of operating the foot switch 43, the expression pedal 44 can be operated when the foot switch 43 is operated.
It is possible to avoid the situation in which is moving.

Therefore, if this embodiment is applied, even a beginner or the like can perform various musical functions provided in the electronic musical instrument, and an electronic musical instrument excellent in operability can be provided.

[0079]

As described in detail above, according to the present invention,
A foot keyboard, which is rarely used by beginners, can function as a switch such as an operation panel so that various functions can be instructed, and an electronic musical instrument excellent in operability that a beginner can easily perform can be provided.

[Brief description of drawings]

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

FIG. 2 is an external perspective view for explaining the present invention and a conventional electronic organ.

FIG. 3 is a flowchart (main routine) showing the operation of the embodiment of the present invention.

FIG. 4 is a flowchart (panel scan processing routine) showing the operation of the embodiment of the present invention.

FIG. 5 is a flow chart (key scan processing routine) showing the operation of the embodiment of the present invention.

FIG. 6 is a diagram showing an example of a table storing correspondences between footpads and switches such as an operation panel used in the embodiment of the present invention.

[Explanation of symbols]

 10 CPU 11 ROM 12 RAM 13 Key Scan Circuit 14 Switch Scan Circuit 15 Sound Source 16 Hand Keyboard 17 Operation Panel 20 System Bus 30 Upper Keyboard 31 Lower Keyboard 32 Foot Keyboard 40 Panel Section 41 Beats Wood Section 42 Mouth Stick Section 43 Foot Switch 44 Expression Pedal 50 Waveform Memory 51 D / A Converter 52 Amplifier 53 Speaker 60 MIDI Interface Circuit

Claims (1)

[Claims] 1. An electronic musical instrument having a plurality of functions and a plurality of switches for instructing each of these functions, wherein a predetermined function is exhibited in accordance with a predetermined switch instruction, a foot keyboard and the foot keyboard. Storage means that stores the key and the switch in association with each other, a specifying means that specifies that the foot keyboard should be used as a switch that specifies each function, and a state in which the instruction by the specifying means is performed. When the key of the foot keyboard is pressed, the processing means performs the same process as when the switch corresponding to the pressed key is operated according to the correspondence stored in the storage means. An electronic musical instrument characterized by doing