JPH08137473A - Expression pedal device of electronic musical instrument - Google Patents

Abstract

PURPOSE: To provide an expression pedal device of an electronic musical instrument in which the sound volume balance among plural tone colors generated during a dual playing mode is varied in accordance with the amount of stepping on the expression pedal. CONSTITUTION: The device consists of a pedal function storage means 26 which stores the function data to be assigned to an expression pedal 30, a pedal function assigning means 22 which assigns the functions to the pedal 30 during a dual playing mode, a dual tone color storage means 22 which stores the tone colors assigned to the pedal 30, a sound volume balance setting means 21 which sets the balance of the sound volume of the sound generated with an assigned tone color, a sound volume balance storage means 28 which stores the set sound volume balance and a pedal function executing means 23 which detects- discriminates the degree of stepping down of the pedal 30 and controls the sound volume balance of each tone color during a dual playing mode in accordance with the stepping down of the pedal 30.

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 equipped with an expression pedal, which is capable of easily changing the volume balance of each tone color being produced in accordance with the depression amount of the expression pedal in the dual performance mode. The present invention relates to an expression pedal device for musical instruments.

[0002]

2. Description of the Related Art One of the conventional electronic musical instruments such as an electronic piano is
Many of them have a dual performance mode in which a plurality of tones can be simultaneously produced when two keys are pressed. Many of the electronic musical instruments having these dual performance modes are capable of varying the volume balance among a plurality of timbres to be played.

FIG. 7 is a functional block diagram of a conventional electronic musical instrument of this type. In the conventional electronic musical instrument as shown in the figure, the system switch 4B on the operation panel 4 assigns a tone color in the dual performance mode, and the dual switch 4A switches between the normal performance and the dual performance mode.

However, in such a configuration of the conventional electronic musical instrument, even if various functions are prepared, the switches and operators for demonstrating these functions are provided on the operation panel, and therefore, on the panel. It was very cumbersome to operate the switches and controls while playing on the keyboard, and it was difficult to use, and it was difficult to change the volume balance in real time during the performance.

On the other hand, in some conventional electronic musical instruments, an external expression pedal is used, and the volume can be adjusted according to the depression amount of the pedal.

However, the function of the expression pedal of these musical instruments is uneconomical because it is used only for adjusting the volume of one timbre.

Therefore, there has been a demand for the appearance of an electronic musical instrument capable of controlling the volume balance between a plurality of timbres in the dual performance mode without using a switch operation by hand.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and in an electronic musical instrument having an expression pedal, the volume balance between a plurality of tones produced in the dual performance mode is adjusted by depressing the expression pedal. An object of the present invention is to provide an expression pedal device for an electronic musical instrument that can be changed according to the amount.

[0009]

FIG. 1 is a diagram illustrating the principle of an expression pedal device for an electronic musical instrument according to the present invention.

As shown in the figure, in the present invention, in an electronic musical instrument having an expression pedal 30, a pedal function storage means 26 for storing function data assignable to the expression pedal 30 and the pedal function storage means 26 are stored. Pedal function allocating means 22 for allocating functions to the expression pedal 30 in the dual performance mode based on the data obtained, and the pedal function allocating means 2
2, a dual tone color storage means 27 for storing the tone color assigned to the expression pedal 30 and a volume balance setting means 21 for setting the balance of the volume of the tone color assigned by the pedal function assigning means 22.
A volume balance storage means 28 for storing the volume balance set by the volume balance setting means 21, and a degree of depression of the expression pedal 30 are detected / determined,
The pedal function executing means 23 controls the volume balance of each tone color in the dual performance mode according to the degree of depression of the expression pedal 30.

[0011]

According to the present invention, in the electronic musical instrument having the expression pedal 30, when the function of the dual performance mode is assigned to the expression pedal 30 in advance before the performance is started, when the expression pedal 30 is operated during the performance, The volume balance of the tones assigned to the dual performance mode can be controlled according to the amount of pedal operation.

That is, the performer operates the system switch 4B and the editor before starting the performance to assign a plurality of timbres to be produced in the dual performance mode, and subsequently, the volume balance of the plurality of timbres to be produced by the editor in the dual performance mode. Set the reference value of.

As a result, when the dual switch 4A is pressed, the normal performance mode is switched to the dual performance mode, and the volume balance between a plurality of timbres is controlled according to the operation of the expression pedal 30.

For example, when a piano and an organ are assigned to the dual performance mode, when the expression pedal 30 is fully depressed, the maximum volume of the piano is based on the preset volume balance reference value. In addition, the organ volume is controlled to the minimum.

On the contrary, when the pedal is not depressed at all, the volume of the piano is controlled to the minimum and the volume of the organ is controlled to the maximum. Furthermore, when the pedal is pressed half way down, the volume of the piano and that of the organ are pronounced at the same rate.

Thus, since there is no need to manually operate the dual performance mode, an electronic musical instrument having a rich musical expression can be controlled in real time without affecting the performance and allowing the user to control the volume balance in real time. Can be provided.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the device according to the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a block diagram showing the overall configuration of the electronic musical instrument according to the present invention. The function of each block will be described below with reference to the drawings. In each of the following drawings, the same parts are denoted by the same reference numerals.

In the figure, 100 is a CPU, and 20
Reference numeral 0 is a ROM, 300 is a RAM, and 400 is a pedal device.

The CPU 100 controls each part of the electronic musical instrument according to a control program stored in the program memory part of the ROM 200, assigns a function to the expression pedal 30, sets a volume balance during dual performance, and controls the expression pedal. The volume balance of each tone color generated according to the depression amount of 30 is controlled.

Therefore, the CPU 100 is provided with a volume balance setting section 21, a pedal function assigning section 22, a pedal function executing section 23, etc., and the controlled signal is sent to the tone signal generating section 5.

The ROM 200 stores tone color data and various other fixed data in addition to the program for operating the CPU 100 described above. The pedal function data directly related to the present invention is stored in the pedal function data section 26 of the ROM 200.

Further, the expression pedal function data storage section 26 provided on the ROM 200 is
Functions that can be assigned to the expression pedal 30 during dual performance are stored, and are referred to when the expression pedal function assigning unit 22 assigns functions to the expression pedal 30.

In the RAM 300, a work area of the CPU 100, various registers for controlling the electronic musical instrument, counters, flags and the like are defined, and necessary data out of the data stored in the ROM 200 is transferred. It has a data area for temporary storage.

Further, a plurality of registers in which data necessary for sound emission corresponding to the state of each key and switch of the operation panel 4 are set, and each tone generation circuit of the tone signal generator 5 is assigned to an unused channel. The assigner memory that stores data, the storage area that stores performance information, etc.
It is provided in 300.

The data regarding the setting states of the switches of the operation panel 4 stored in the RAM 300 is referred to by the CPU 100 as needed during sound production. In addition, the key depression map and the note-on counter that store the on / off state of the keyboard 1 described above are also stored in the RAM 300.
It is provided in.

Further, the dual tone color storage section 27 for storing the assignment of pedal functions directly related to the present invention and the volume balance storage section 28 for storing the reference value of the volume balance of a plurality of tone colors produced in the dual performance mode are also provided. RAM3
00.

The keyboard 1 is used for designating a musical sound to be generated, and is composed of a plurality of keys and a key switch which is opened / closed in association with a key depression / release operation of these keys. The key depression / key release operation of the performer is detected by the key depression detection unit 2, and the detected signal is supplied to the tone generation channel assignment unit 11 (see FIG. 3) under the control of the CPU 100.

Performance information generated by pressing or releasing the keyboard 1 is stored in a predetermined area of the temporary RAM 300 and read by the CPU 100 as required.

The key-depression detecting section 2 detects the key-depressing / key-releasing operation of the player, that is, the on / off state of the key, and informs the sounding channel assigning section 11 of the detected on / off state together with the key number. Is. The CPU 100 stores this key on / off information in the RAM 300.

On the operation panel section 4, in addition to the power switch,
Various switches and indicators such as a tone color selection switch, a mode designation switch, a melody selection switch, and a rhythm selection switch are provided. The operation panel 4 is also provided with a dual switch 4A and a system switch 4B which are directly related to the present invention.

The set / reset state of each switch of the operation panel 4 is detected by the panel scan circuit 3 included therein, and relates to the set state of the switch detected by the panel scan circuit 3 of the operation panel 4. Data is RAM300 under the control of CPU100
It is stored in a predetermined area above.

The pedal device 400 is provided with, for example, a damper pedal, a soft pedal, a sostenuto pedal, etc. according to the type of electronic musical instrument.
The off state is detected and controlled by the pedal function execution unit 23 of each pedal.

The tone signal generator 5 reads out tone waveform data and envelope data corresponding to the signal output from the CPU 100 from the waveform memory, adds an envelope to the read tone waveform data, and outputs the tone signal. .

The tone signal output from the tone signal generator 5 is supplied to the amplifier 6 through a D / A converter (not shown). Therefore, the tone signal generator 5 is connected to a waveform memory (not shown) for storing waveform data and envelope data.

The amplifier 6 amplifies the analog tone signal supplied from the tone signal generator 5 through a D / A converter (not shown) with a predetermined gain. The output of the amplifier 6 is supplied to the speaker 7.

The speaker 7 converts an analog musical tone signal as an electric signal sent from the amplifier 6 into an acoustic signal. That is, the musical tone is emitted according to the generated musical tone signal.

FIG. 3 is a functional block diagram of the main parts of the electronic musical instrument relating to the expression pedal device of the present invention.
First, referring to FIG. 3, the functions of the parts not described in FIG. 2 will be described.

The tone generation channel assigning section 11 assigns an internal signal sent from the key depression detecting section 2 or the dual volume balance storing section 28 to a predetermined tone generating channel. The tone information from the tone generation channel assigning section 11 is supplied to the tone signal generating section 5.

The dual switch 4A provided on the operation panel 4 is a switch for switching between the normal performance mode and the dual performance mode. When the switch is pressed, the switch of the switching section 12 is switched to dual-on.
The dual performance mode is set.

On the other hand, the circuit in which the switch of the switching unit 12 is connected to dual off constitutes a circuit in the normal performance mode, and the dual switch 4A is off, that is, the circuit is switched to dual off in the normal state. Is configured, and normal performance is performed.

The system switch 4B provided on the operation panel 4 is a switch for making various system settings. After operating the system switch 4B, a desired system setting is made by an editor while referring to the display on the display. Is done.

The setting of the dual performance mode directly related to the present invention is performed by the system switch 4B and the editor. Details of the dual performance mode setting procedure will be described in detail in the description of FIG.

The dual tone color storage unit 27 is provided on the RAM 300, and stores a preset combination of tone colors that are sounded during dual performance. At the time of sounding, predetermined waveform data is read from the waveform memory based on the tone color stored in the dual tone color storage unit 27.

The dual volume balance storage unit 28 is a RAM
It is provided on the unit 300 and stores the reference value of the volume balance of a plurality of tones set in advance in the system mode setting. At the time of dual performance, the volume of each tone color is controlled using the value stored in the dual volume balance storage unit 28 as a reference value (intermediate value) of sound generation.

The dual volume balance setting unit 21 is a CPU
The volume balance of each tone color when the dual tone colors stored in the dual tone color storage unit 27 are sounded is set. The contents set by the dual volume balance setting unit 21 are stored in the dual volume balance storage unit 28 and referred to when the sound is produced.

The dual volume balance setting section 21
The volume balance set by is set by the system switch 4B and the editor before the performance is started, and is used as a reference value of the volume controlled by the operation of the expression pedal 30.

That is, during the performance, the volume balance set by the dual volume balance setting section 21 is set as an intermediate value of the sounds produced for each tone color, for example, 90 according to the operation amount of the expression pedal 30. : 70 or 80: 9
Controls the balance of the sound volume, such as 5.

Expression pedal function assigning section 22
Assigns to the expression pedal 30 a function of controlling the volume balance of each tone color generated according to the operation amount of the expression pedal during dual performance.

Expression pedal function assigning section 2
In the function assignment by 2, the function assignment from the expression pedal function assigning section 22 is performed by setting the system switch 4B in the system setting mode and operating the editor.

For this reason, the expression pedal function data storage unit 26 is connected to the expression pedal function allocation unit 22, so that the expression pedal function data storage unit 26 can allocate the function to the expression pedal function data storage unit 26. Various necessary data are stored.

In the normal performance mode, that is, when the dual switch 4A is not pressed, it is not necessary to control the volume balance of the dual timbres, so the expression pedal function assigning section 22 does not operate and the pedal function execution is performed. The volume of the single tone color is controlled by the unit 23 to generate the tone.

FIGS. 4 and 5 are flow charts for explaining the operation of the electronic musical instrument of this embodiment when setting and sounding. The operation of the electronic musical instrument of this embodiment will be described below with reference to FIGS.

First, when the power switch provided on the operation panel 4 is turned on or the reset switch is depressed, initialization processing is performed (step S1).
1).

This initialization processing initializes the registers in the CPU 100 and the registers defined in the RAM 300, moves the predetermined data and programs stored in the ROM 200 to the RAM 300, and further timbre. This is processing such as initializing the pointer and determining the initial tone color.

Next, a panel scan process is performed (step S12). In this panel scan processing, the presence or absence of a panel event is determined based on the data detected by the scan circuit of the operation panel 4, ON / OFF information of each switch is created based on the determination result, and stored in the RAM 300. is there.

Then, it is checked whether or not the system switch 4B is turned on (step S13). This is a process for determining whether or not to make settings for dual performance. If it is not turned on, panel processing such as other tone color setting and rhythm setting is performed (step S1).
5) and proceeds to step S18.

On the other hand, if the system switch 4B is turned on in step S13, then it is checked whether or not the system switch 4B is set in the pedal function setting mode (step S14).

If the system switch 4B is not set to the pedal function setting mode, it is not in the pedal function setting mode, so other system setting, that is, total volume setting is performed (step S17), and the process proceeds to step S18.

On the other hand, if the pedal function setting mode is selected in step S14, then the dual performance function is assigned to the expression pedal 30 (step S1).
6).

That is, the expression pedal function assigning section 22 assigns the expression pedal 30 a function of controlling the timbre to be sounded in the dual performance set by the editor.

Next, the dual volume balance setting unit 21 sets the volume balance when the set tone color is produced, and these set values are stored in the dual tone color storage unit 27 and the volume balance storage unit 28.

This completes the setting of the dual performance function for the expression pedal 30 and then enters the performance mode.

In the performance mode, first, a pedal scan process is performed (step S18). The pedal scan processing reads data regarding ON / OFF of the expression pedal 30 detected by the pedal function execution unit 23,
Set it in a pedal buffer (not shown).

Then, by comparing the contents of the old pedal buffer and the new pedal buffer, a pedal event buffer in which the portion corresponding to the operated pedal is turned on or off is created.

Then, the fetched data is searched to check whether or not there is a pedal event of the expression pedal 30, that is, whether or not there is a pedal pressing or releasing operation (step 19). If there is no pedal event here, there is no need to process anything, so the process skips to step S24.

On the other hand, if it is determined that there is a pedal event, then it is checked whether or not the dual performance mode is assigned to the expression pedal 30 (step S20). This is done by checking a flag in a predetermined area on the RAM 300.

If the dual performance mode is not assigned to the expression pedal 30, there is no dual performance, so other expression pedal processing, that is, volume control processing for normal performance, total volume processing, etc. is performed ( The process proceeds to step S23) and step S24.

On the other hand, when it is determined in step S20 that the dual performance mode is assigned to the expression pedal 30, the dual switch 4A is subsequently operated.
It is checked whether or not is turned on (step S2).
1).

If the dual switch 4A is not turned on, it means that the performance mode is a normal one. Therefore, other expression pedal processing such as total volume control is performed (step S23), and the process proceeds to step S24.

On the other hand, if the dual switch 4A is turned on in step S21, it means the dual performance mode, and the dual balance process is then performed. (Step S22).

That is, a tone color assigned to a dual performance is read from the dual tone color storage unit 27, a waveform of a predetermined tone color is read from a waveform memory (not shown) based on the tone color, and a predetermined volume is stored from the volume balance storage unit 28. Read the control value.

On the basis of the read control value, the pedal function execution unit 23 determines the volume balance control value according to the operation amount of the expression pedal 30 and prepares for sounding.

Then, other pedal processing is performed (step S24). That is, processing is performed on pedals other than the expression pedal 30, such as a damper pedal and a sostenuto pedal, to prepare for execution of a pedal function associated with sounding or muting.

Next, a key scan process is performed (step S25). In this key scan processing, data regarding the key depression state of the keyboard 1 detected by the key depression detection unit 2 is read,
This is a process of setting in the new key buffer, and by comparing the contents of the old key buffer and the new key buffer, the key event buffer in which the part corresponding to the operated key is turned on or off is created.

Then, the fetched event buffer is searched to check whether or not there is a key event, that is, whether or not there is a key depression or key release operation (step 26). If there is no key event here, there is no need to perform any processing, so the processing is skipped and the process proceeds to step S30.

On the other hand, if there is a key event in step S26, it is subsequently checked whether or not the key event is an on event (step S27). When it is determined that the event is not the on event, that is, the key release event, the mute processing is performed (step S2).
8). This mute processing is processing in which the CPU 100 sends predetermined control information to the tone signal generator 5 so as to erase the tone currently being sounded.

For example, if the pedal information is off, a predetermined release data is sent, the envelope is quickly converged to "0", and the sound is cut off. Then, it progresses to step S30 and performs other processes.

On the other hand, if it is determined that the event is an on event, a predetermined sounding process is performed (step S2).
9) and proceeds to other processing in step S30.

"Other processing" (step S30)
Then, the switch event processing, the key event processing, and other processing according to the designation of the switch detected, for example, switch events for timbre change processing, volume change processing, rhythm selection processing, and the like are processed.

When the processing is completed, the process returns to step S12, and the same processing is repeated during the performance.

In this way, since the volume balance of each tone color produced by the expression pedal 30 is controlled, it is not necessary for the performer to release the hand during the performance and operate the operating elements or the like, which is easy. The volume balance can be controlled.

Next, the procedure for assigning the pedal function to the expression pedal 30 will be described with reference to FIG.

The operation panel 4 as illustrated in FIG.
In addition to the display screen, a cursor switch, a value switch, etc. are provided on the upper part in addition to the system switch 4B.

The system switch 4B is, for example, a push-down switch, and when the system switch 4B is pushed, the system can be set on the LCD screen.

The cursor switch is used to select the item whose value is to be changed by the value switch, and the cursor is moved on the screen by operating the switch.

The value switch is a switch for changing the value of the item with the cursor. For example, as illustrated in FIG. 6B, when the value switch is operated in the state where the cursor is on the system mode page, the page of the screen is switched and the next system mode can be selected.

FIG. 6B shows an example of the structure of the display screen. When assigning a function to the expression pedal 30, first move the cursor to the page and operate the value switch to display the pedal function assignment page, for example, page 3.

Next, move the cursor to the title part,
EXP by value switch. Select and display PEDAL (expression pel) (see FIG. 6C).

Further, move the cursor to the content portion and use the value switch to select the desired item, for example DUAL BAL.
Select and display AANCE.

In FIG. 6C, the expression pedal item on page 3 is selected as the pedal to which the pedal function is assigned, and VOLUME (volume) is currently selected as the function that can be assigned by the expression pedal item. It is shown that.

In FIG. 6D, the cursor is moved to the VOLUME item in FIG. 6C, the value switch is operated, and the DUAL BALANCE is selected, and the DUAL BALANCE (dual balance) is selected.
It is indicated that the function can be assigned.

When the value switch is operated in this state, for example, the volume changes to 100: 100 or 100: 80, and the DUAL
BALANCE (dual balance) allocation is performed.

In this way, according to the present invention, it is possible to assign the dual pedal function to the expression pedal 30.

[0095]

As described above in detail, according to the electronic musical instrument of the present invention, it is possible to switch the volume balance between a plurality of timbres to be produced by the depression amount of the expression pedal. It is possible to provide an easy-to-use electronic musical instrument that does not need to be manually switched.

Further, even in the case of producing a single tone color, the volume balance can be changed in accordance with the depression amount of the expression pedal, so that the musical performance can be enhanced.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of an expression pedal device for an electronic musical instrument of the present invention.

FIG. 2 is a block diagram showing the overall configuration of an electronic musical instrument according to the present invention.

FIG. 3 is a block diagram showing a functional configuration of an expression pedal device of an electronic musical instrument according to the present invention.

FIG. 4 is a flowchart (1) for explaining the operation of the expression pedal device of the electronic musical instrument according to the present invention.

FIG. 5 is a flowchart (2) explaining the operation of the expression pedal device of the electronic musical instrument according to the present invention.

FIG. 6 is a screen input diagram illustrating an operation of setting a function of dual performance.

FIG. 7 is a diagram illustrating a functional configuration for a dual performance mode of a conventional electronic musical instrument.

[Explanation of symbols]

1 keyboard 2 key press detection unit 3 panel scan circuit 4 operation panel 4A dual switch 4B system switch 5 tone signal generation unit (tone generation unit) 6 amplifier 7 speaker 11 sounding channel assignment unit 12 switching unit 21 dual volume balance setting unit (volume) Balance setting means) 22 expression pedal function allocating section 22 (pedal function allocating section) 23 pedal function executing section (pedal function executing section) 26 pedal function data storage section (pedal function storing section) 27 dual tone color storage section (dual tone color storage section) ) 28 dual volume balance storage section (volume balance storage means) 29 pedal 30 expression pedal 100 CPU 200 ROM 300 RAM 400 pedal device

Claims (1)

[Claims] 1. An electronic musical instrument equipped with an expression pedal, comprising pedal function storage means for storing function data assignable to the expression pedal, and data stored in the pedal function storage means.
Pedal function assigning means for assigning functions to the expression pedal in the dual performance mode, dual tone color storing means for storing a plurality of tones assigned to the expression pedal by the pedal function assigning means, and assigned by the pedal function assigning means. Volume balance setting means for setting the balance of the volumes produced by different tones, a volume balance storage means for storing the volume balance set by the volume balance setting means, and an expression pedal for detecting and determining the degree of depression of the expression pedal. An expression pedal device for an electronic musical instrument, comprising: a pedal function executing means for controlling the volume balance of each tone color produced in the dual performance mode according to the degree of depression of the pedal.