JPH0756575A - Sound volume controller for electronic musical instrument - Google Patents

Abstract

PURPOSE:To provide a sound volume controller for electronic musical instrument which enables a player to easily set the automatic accompaniment to his desired state by controlling the sound volume of plural parts without increasing the number of part volume devices. CONSTITUTION:The electronic musical instrument for automatic performance of plural parts is provided with a sound volume indicating means 12C having plural volume devices to indicate the sound volumes of parts, an assigning means 33 which assigns each volume device of the sound volume indicating means 12C to some of plural parts, a storage means 13 where automatic performance data of plural parts is stored, a read means 32 which successively reads out automatic performance data of plural parts stored in the storage means 13, and a musical sound signal generating means 14 which generates a musical sound signal having the sound volume indicated by the volume device assigned to a pertinent part by the assigning means 33 based on read-out automatic performance data at the time of reading out automatic performance data of this part by the read means 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a volume control device for an electronic musical instrument for individually controlling the volume of each part during automatic performance.

[0002]

2. Description of the Related Art In recent years, electronic musical instruments having an automatic performance function have been developed and put into practical use. 1 of such automatic performance function
As one of them, there is known one in which an accompaniment sound is automatically generated according to a predetermined chord progression when a performer gives an instruction to start an automatic performance. By using this kind of automatic performance function, the player can enjoy the performance by playing, for example, a melody with the automatically generated accompaniment sound as the background.

FIG. 7 is a block diagram showing a general structure of an electronic musical instrument having such an automatic performance function. In the figure, 10 is a central processing unit (hereinafter referred to as "CPU"),
11 is a keyboard device, 12 is an operation panel, 13 is an automatic performance data storage unit, 14 is a tone signal generation unit, 15 is an amplifier, 1
6 is a speaker.

The CPU 10 has a key depression detecting section 30, a sound generation channel assigning section 31, and a data reading section 32 which are realized by the function of software or both the functions of software and hardware. Details of each of these components will be described later.

The keyboard device 11 is provided with a plurality of keys for designating a pitch. The keyboard device 11 outputs data in which the on / off state of a key switch provided for each key corresponds to 1 bit. The data output by the keyboard device 11 is sent to the key depression detection unit 30 of the CPU 10. As the keyboard device 11, for example, a two-contact type keyboard device is used to detect so-called initial touch data.

The key-depression detecting section 30 of the CPU 10 detects the key number and the initial touch data of the key depressed or released based on the data sent from the keyboard device 11. The key number and initial touch data (hereinafter collectively referred to as “keyboard data”) detected by the key depression detecting unit 30 are sent to the sounding channel assigning unit 31.

The operation panel 12 is used to instruct the electronic musical instrument to perform various operations, and is composed of a plurality of switches, a display and the like. The automatic performance switch 12A and the part volume device 12C used in the following description are mounted on the operation panel 12.

The automatic performance switch 12A is a switch for controlling the start or stop of the automatic performance. Specifically, when the automatic performance switch 12A is turned on, the data reading section 32, which will be described later, reads the automatic performance data from the automatic performance data storage section 13 and sends it to the tone generation channel assigning section 31. On the other hand, when the automatic performance switch 12A is turned off, the reading of the automatic performance data from the automatic performance data storage unit 13 by the data reading unit 32 described later is stopped.

The part volume device 12C is composed of a plurality of slide type volumes corresponding to each part during automatic performance, as shown in FIG. 2A, for example. With this part volume device 12C,
The volume of each part during automatic performance, for example, the drum sound, bass sound, and chord sound can be individually controlled. The volume data output from the part volume device 12C is sent to a musical tone signal generation unit 14 described later and used for volume control for each part.

The automatic performance data storage unit 13 stores automatic performance data used for automatic performance, and is composed of, for example, a read only memory (hereinafter referred to as "ROM"). The automatic performance data storage unit 13 stores automatic performance data for each part (drum, bass and chord). This automatic performance data storage unit 13
Is connected to the data reading unit 32 of the CPU 10.

The data reading section 32 of the CPU 10 reads the automatic performance data from the automatic performance data storage section 13 in response to an instruction from the automatic performance switch 12A of the operation panel 12. The automatic performance data read by the data reading section 32 is sent to the tone generation channel assigning section 31 of the CPU 10.

The tone generation channel assigning section 31 receives the keyboard data sent from the key depression detecting section 30 or the automatic performance data sent from the data reading section 32,
If these are data for instructing sound generation (hereinafter referred to as "note-on data"), a sounding channel is assigned, and if they are data for instructing mute (hereinafter called "note-off data"), release sounding channel The processing is performed.

Here, the tone generation channel corresponds to an oscillator (1 or 2 or more) included in the tone signal generation unit 14 described later, and the tone generation channel assignment is when a tone generation instruction is given, that is, the above-mentioned push When note-on data is sent from the key detection unit 30 or the data reading unit 32, it is a process of determining which oscillator in the tone signal generation unit 14 should be used to generate a sound.

When a tone generation channel is assigned by the tone generation channel assigning section 31, information to that effect and note-on data relating to the tone generation instruction are sent to the tone signal generating section 14.

The tone signal generator 14 has a plurality of oscillators as described above, and uses the oscillator assigned by the tone generation channel assigner 31 to generate a tone signal based on the note-on data. That is, the tone signal generator 14 outputs the tone pitch designated by the keyboard device 11 at that time, and the tone color designated by the tone color selection switch (not shown) and the volume designated by the main volume (not shown). Generate a tone signal having.

Further, the musical tone signal generator 14 is in the automatic performance mode, the tone volume and tone color designated by the automatic performance data, and the part volume device 12C of the operation panel 12.
The musical tone signal for each part having an amplitude level according to the volume data designated by is generated in a time division manner. The musical tone signal of each part generated by the musical tone signal generator 14 is amplified by the amplifier 15 in a predetermined manner and is emitted through the speaker 16.

[0017]

In the conventional electronic musical instrument having the automatic performance function configured as described above, the volume of each part during the automatic performance is adjusted by the part volume device 12C provided for each part. It is supposed to do. For example, part volume devices are provided corresponding to drums, basses, and chords, and the volume of each part can be arbitrarily set using these part volume devices.

By the way, in many cases, for example, a chord part is designed to generate a chord sound by using a plurality of timbres in order to increase the thickness of the accompaniment sound. Therefore, the volume of the chord sound is only increased or decreased as a whole, and it is impossible to adjust the volume so as to emphasize a specific musical instrument sound in the chord sound.

This problem can be solved by increasing the number of part volume devices and adjusting the volume for each tone color forming the chord tone, but the area that can be occupied by the operation panel on the electronic musical instrument is reduced. Has a limit,
There is a problem that the cost increase due to the increase in the number of part volume devices cannot be avoided.

The present invention has been made in view of the above circumstances, and the volume of each part can be adjusted without increasing the number of part volume devices, so that the performer can easily perform automatic accompaniment in his or her favorite state. It is an object of the present invention to provide a volume control device for an electronic musical instrument that can be set to.

[0021]

In order to achieve the above object, a volume control device for an electronic musical instrument according to the present invention has a plurality of volumes for instructing the volume of a part in an electronic musical instrument for automatically playing a plurality of parts. A volume instructing means having a device, an assigning means for allocating each volume device of the volume instructing means to any of the plurality of parts, a storage means for storing automatic performance data of the plurality of parts, and a storage means stored in the storage means A reading means for sequentially reading out the automatic performance data of a plurality of parts, and when the reading means reads out the automatic performance data of a predetermined part, the assigning means assigns to the part based on the read automatic performance data. Tone signal generating means for generating a tone signal having a volume designated by the assigned volume device.

[0022]

In the volume control device of the electronic musical instrument of the present invention,
In an electronic musical instrument that automatically plays multiple parts, the correspondence between each part and the volume device can be arbitrarily assigned, and the volume of each part can be controlled by the volume device assigned to each part. There is.

As a result, even if the number of parts for automatic performance is larger than the number of volume devices, the correspondence between each part and the volume device can be changed by a simple operation without increasing the number of volume devices. You can change the volume of the part. Therefore, the performer sets the volume of the part that is not dynamically changed during the performance to a predetermined value in advance, and assigns the part that is dynamically changed during the performance to the volume device to suit his or her preference. You can enjoy playing electronic musical instruments with automatic accompaniment in the background.

[0024]

Embodiments of the present invention will now be described in detail with reference to the drawings. In the following embodiments, this electronic musical instrument has the following five parts as parts for automatic performance. Each of these parts is specified by a unique part number attached to each part (hereinafter, indicated by "-"). Drum bass chord 1 chord 2 chord 3

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of an electronic musical instrument to which a volume control device according to the present invention is applied. In the following, in the "Prior art" section, the same or corresponding components as those described with reference to FIG. 7 are designated by the same reference numerals, and the description thereof will be omitted or simplified.

In FIG. 1, 10 is a CPU, 11 is a keyboard device, 12 is an operation panel, 13 is an automatic performance data storage section, 14 is a tone signal generation section, 15 is an amplifier and 16 is a speaker.

The CPU 10 has a software function, or a combination of software and hardware functions, which realizes a key depression detection unit 30, a sound generation channel allocation unit 31, a data reading unit 32, a volume allocation unit 33, and a volume data setting unit. It is configured to have 34. Details of each of these components will be described later.

The keyboard device 11 is the same as that described in the conventional example. The data output by the keyboard device 11 is C
It is sent to the key depression detection unit 30 of the PU 10.

The key-depression detection unit 30 is also the same as that described in the conventional example, and detects the key number and the initial touch data of the key depressed or released based on the data sent from the keyboard device 11. It is a thing. The keyboard data including the key number and the initial touch data detected by the key depression detecting unit 30 is sent to the sound generation channel assigning unit 31 of the CPU 10.

The operation panel 12 is for instructing the electronic musical instrument to perform various operations, and is composed of a plurality of switches, a display and the like. The automatic performance switch 12A, the system switch 12B, and the part volume device 12C used in this embodiment are mounted on the operation panel 12. The automatic performance switch 12A is a switch for controlling the start or stop of the automatic performance, as described in the conventional example, and specifically, starts / stops the reading of the automatic performance data in the data reading section 32 described later. Used to direct.

The system switch 12B corresponds to a part of the assigning means, and is used to shift the electronic musical instrument to the system setting mode. By depressing the system switch 12B, the electronic musical instrument is shifted to the system setting mode, and various operations of the electronic musical instrument are defined by using a value switch and an increment dial (not shown) provided on the operation panel 12. Various parameters are set.

In the system setting mode, the volume allocation unit 33 of the CPU 10 is activated by performing a predetermined operation using the value switch and the increment dial, etc., and each volume device of the part volume device 12C is assigned to each part. Processing is performed.

The part volume device 12C corresponds to a volume instructing means, and for example, as shown in FIG. 2A, is composed of three slide type volumes (hereinafter referred to as "slider") VOL1, VOL2 and VOL3. Has been done. Each slider VOL1, VOL2, and VOL3 of the part volume device 12C is not uniquely associated with each part such as a drum, a bass, and a chord, as shown in the conventional example. In the above, each is assigned to a predetermined part.

In the above embodiment, the sliding volume is illustrated as the part volume device 12C, but the invention is not limited to this. For example, various volumes can be used as long as they can generate value, such as a rotary volume and a digital volume.

The volume data output by the sliders VOL1, VOL2 and VOL3 of the part volume device 12C is sent to the tone signal generator 14 via the volume data setting unit 34 of the CPU 10 described later, and the volume is adjusted for each part. Has been used for.

The operation panel 12 is provided with various switches other than those described above, for example, a tone color selection switch, a rhythm change switch, etc., but since they are not directly related to the present invention, description thereof will be omitted.

The automatic performance data storage unit 13 corresponds to a storage means, and is composed of, for example, a ROM. In this automatic performance data storage unit 13, each part (drum,
Automatic performance data of bass, chord 1, chord 2 and chord 3) is stored. This automatic performance data storage unit 1
3 is connected to the data reading unit 32 of the CPU 10.

The data reading section 32 corresponds to a reading means and has the same function as that described in the conventional example. The automatic performance data read by the data reading section 32 when the automatic performance is started by the automatic performance switch 12A is sent to the sound generation channel assigning section 31.

The sound generation channel assigning section 31 receives the keyboard data sent from the key depression detecting section 30 or the automatic performance data sent from the data reading section 32, and if these are note-on data, sound is generated. A channel is allocated, and in the case of note-off data, processing for releasing the sound generation channel is performed. The function of the tone generation channel assigning unit 31 is the same as that described in the conventional example.

When a tone generation channel is assigned by the tone generation channel assigning unit 31, information to that effect and note-on data relating to the tone generation instruction are sent to the tone signal generating unit 14.

The volume allocation unit 33 of the CPU 10 corresponds to a part of the allocation means, and as described above, in response to an instruction from the operation panel 12, each slider VOL1, VOL2 or VOL3 of the part volume device 12C.
To assign a part (drum, bass, chord 1, chord 2 or chord 3) to. Specifically, each slider V of the part volume allocation table (provided in the RAM (not shown)) as shown in FIG.
A process of writing a part number to the columns corresponding to OL1, VOL2, and VOL3 is performed.

The information of the part volume allocation table created by the processing of this volume allocation unit 33 is CP
It is referred to by the volume data setting unit 34 of U10.

The volume data setting unit 34 sets the volume data sent from each slider VOL1, VOL2 and VOL3 of the part volume device 12C according to the contents of the part volume allocation table as shown in FIG. 2 (C).
The process for setting the volume value of each part in a part volume buffer (provided in a RAM (not shown)) as shown in FIG. This allows
The volume of each part is determined. The volume data of each part determined here is referred to in the automatic performance process described later.

For example, when the slider VOL1 of the part volume device 12C is operated, the operated slider V
The part number (for example) corresponding to OL1 is taken out from the part volume allocation table, and the volume data sent from the slider VOL1 is written in the column of the part volume buffer corresponding to this part number.

The tone signal generating section 14 corresponds to the tone signal generating means and is the same as that described in the conventional example. That is, the tone signal generator 14 has a plurality of oscillators as described above, and uses the oscillator assigned by the tone generation channel assigner 31 to generate a tone signal based on the note-on data.

That is, the tone signal generator 14 outputs the tone pitch (indicated by the tone color selection switch (not shown)) and the volume (not shown) which are the pitches designated by the keyboard device 11 at that time. Sound signal having a main volume). The tone signal based on the key depression generated by the tone signal generator 14 is sent to the amplifier 15
Then, predetermined amplification is performed and sound is emitted through the speaker 16.

During the automatic performance, the musical tone signal generator 14 produces a musical tone having a pitch and tone color designated by the automatic performance data and having an amplitude level corresponding to the volume data stored in the volume buffer. The signal is generated in time division for each part. The musical tone signal of each part generated by the musical tone signal generator 14 is amplified by the amplifier 15 in a predetermined manner and is emitted through the speaker 16.

Next, with respect to the operation of the present electronic musical instrument in the above-mentioned configuration, focusing on the operation of the volume control device, FIGS.
This will be described with reference to the flowchart shown in FIG.

FIG. 3 is a flow chart showing the main routine of the 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 performed by the CPU
This is a process of setting the internal state of 10 to the initial state and setting the registers, counters, flags, etc. defined in the RAM (not shown) to the initial state. Further, in this initialization process, a process of sending predetermined data to the musical tone signal generating unit 14 and preventing an unnecessary sound from being generated when the power is turned on is also performed.

Upon completion of this initialization processing, panel processing is then carried out (step S11). The details of this panel processing are shown in the flowchart of FIG.

In the panel process, first, a panel scan process is performed (step S20). In this panel scan process, a process of creating a panel event map is performed. That is, when the CPU 10 scans the operation panel 12, the panel data indicating the on / off state of each switch (hereinafter referred to as “new panel data”) is fetched as a bit string corresponding to each switch.

Next, the RAM that was read last time and is not shown
The panel data (hereinafter referred to as “old panel data”) already stored in the new panel data is compared with the new panel data read this time, and a panel event map in which different bits are turned on is created.

When the above panel scan processing is completed,
Then, the presence / absence of a panel event is checked (step S21). This is done by looking up the panel event map to see if any bits are on.

If it is determined that there is no panel event, the panel processing routine is returned to the main routine without performing any processing. on the other hand,
When it is determined that there is a panel event, it is checked whether or not the event is the event of the automatic performance switch 12A (step S22). This is the automatic performance switch 12A in the panel event map created above.
This is done by checking whether the bit corresponding to is turned on.

When it is determined that the event is the automatic performance switch 12A, it is then checked whether or not the event is an on event (step S2).
3). This is performed by checking whether or not the bit corresponding to the automatic performance switch 12A in the new panel data is turned on. In this case, if the bit corresponding to the automatic performance switch 12A in the new panel data is on, it is determined that there is an on event, and if it is off, there is an off event.

If it is determined in step S23 that the event is an on event, the automatic performance flag is set to "1" (step S24). At the same time, not shown RAM
The timer counter provided in the counter starts counting up.

On the other hand, when it is determined that the event is not the on event, that is, the off event, the automatic performance flag is cleared to "0" (step S25). At the same time, counting up of the timer counter is stopped. If it is determined in step S22 that the event is not the automatic performance switch 12A, steps S23 to S2 are performed.
The process of 5 is skipped.

The automatic performance flag is a flag defined in a RAM (not shown) and stores whether the electronic musical instrument is in the automatic performance mode or the normal performance mode. Here, the automatic performance mode is a mode in which an automatic accompaniment sound is generated based on the automatic performance data stored in the automatic performance data storage unit 13. This automatic performance flag is referred to in an automatic performance processing routine described later.

Then, it is checked whether or not it is an on event of the system switch 12B (step S26).
This is because the bit corresponding to the system switch 12B in the panel event map is turned on, and
This is performed by checking whether or not the bit corresponding to the system switch 12B of the new panel data is turned on.

When it is determined that the system switch 12B is an on event, system setting processing is performed (step S27). What is the system setting process?
For example, it is a process of setting various parameters necessary for causing the electronic musical instrument to perform a desired operation by using a value switch and an increment dial which are not shown. A part volume allocation process is performed as one of the system setting processes.

That is, the volume allocation unit 3 of the CPU 10 is operated by performing a predetermined operation in the system setting mode.
3 is activated and put in a part volume allocation state. In this state, the sliders VOL1, VOL2 and VOL3 of the part volume device 12C and the parts (drum, bass, chord 1, chord 2 or chord 3) are used by using a value switch and an increment dial (not shown).
When the operation of associating with each other is performed, each slider VOL of the part volume allocation table as shown in FIG.
The part numbers ~ are written in the columns corresponding to 1, VOL2, and VOL3, and the part volume allocation processing ends. Then, it progresses to step S29.

On the other hand, if it is determined in step S26 that the system switch 12B is not an on event,
"Other switch processing" is performed (step S2).
8). This "other switch processing" is processing for switch operations other than those described above provided on the operation panel.

For example, a tone color switching process corresponding to the operation of the tone color selecting switch, a rhythm changing process corresponding to the operation of the rhythm changing switch, and the like are performed. Since the contents of the processing corresponding to these switches are not directly related to the present invention, description thereof will be omitted. Then, it branches to step S29.

In step S29, the presence or absence of a volume event is checked. This is the part volume device 1
By scanning the sliders VOL1, VOL2, and VOL3 of 2C, volume data indicating the current value of each volume (hereinafter referred to as "new volume data") is read as, for example, 1-byte data.

Next, the RAM that was read last time and is not shown
The volume data already stored in the disk (hereinafter referred to as "old volume data") is compared with the new volume data read this time to check whether there is different volume data. Then, when there is different volume data, it is determined that there is a slider event corresponding to that volume data.

When it is determined in step S29 that there is a volume event, a part volume setting process is performed (step S30). That is, the volume data setting unit 34 of the CPU 10 is activated, and as described above, each slider VOL of the part volume device 12C.
A process of setting the volume data sent from 1, VOL2, and VOL3 in the part volume buffer as shown in FIG. 2C is performed according to the contents of the part volume allocation table. As a result, the volume of each part is determined. The volume data of each part determined here is referred to in the automatic performance process described later.

For example, when the slider VOL1 of the part volume device 12C is operated, the operated slider V
The part number (for example) corresponding to OL1 is taken out from the part volume allocation table, the volume data sent from the slider VOL1 is written in the column of the part volume buffer corresponding to this part number, and the tone signal generator 14 Sent to. Then, the panel event processing routine returns and returns to the main routine. Also, when it is determined in step S29 that there is no volume event, the panel event processing routine returns and returns to the main routine.

In the main routine, keyboard processing is then carried out (step S12). For details of this keyboard processing,
This is shown in the flow chart of FIG.

In the keyboard processing, first, the presence or absence of a keyboard event is checked (step S40). This is done as follows. That is, first, the key pressing detection unit 30 of the CPU 10
By scanning the keyboard device 11 with, the data indicating the on / off state of each key (hereinafter referred to as “new key data”) is fetched as a bit string corresponding to each key.

Next, the RAM that was read last time and is not shown
The key data (hereinafter referred to as "old key data") that has already been stored in is compared with the new key data read this time, and a key event map with different bits turned on is created. The determination as to whether or not there is a keyboard event in step S40 is performed by checking whether or not there is a bit that is turned on in this key event map.

If it is determined here that there is no keyboard event, no processing is performed and the processing returns from this keyboard processing routine to the main routine. On the other hand, if it is determined that there is a keyboard event, then it is checked whether or not the event is an on event (step S
41). This is done by checking to see if the bit in the new key data corresponding to the on bit in the key event map is on.

If it is determined that the event is an on event, a sounding process is performed (step S42). That is,
The keyboard data output from the key depression detecting unit 30 is sent to the sound generation channel assigning unit 31. Pronunciation channel allocation unit 31
Assigns a tone generation channel to the received keyboard data, and sends information about the assigned tone generation channel and keyboard data to the tone signal generator 14. As a result, the tone signal generator 14 generates a tone signal using the assigned tone generation channel, and the tone is generated via the amplifier 15 and the speaker 16. After that, the process returns from this keyboard processing routine and returns to the main routine.

On the other hand, when it is determined in step S41 that the event is an off event, the sound generation channel assigning section 31
Performs a search for a tone generation channel that is generating a tone corresponding to the keyboard data output from the key depression detection unit 30. Then, the searched tone generation channel (the tone signal generation unit 1
Send predetermined data to 4). As a result, the generation of the tone signal in that tone generation channel is stopped and the amplifier 15
And, the musical sound generated through the speaker 16 is stopped. After that, the process returns from this keyboard processing routine and returns to the main routine.

Next, in the main routine, automatic performance processing is performed (step S13). Details of this automatic performance process are shown in the flowchart of FIG.

In the automatic performance process, it is first checked whether or not the automatic performance flag is "1" (step S5).
0). When it is determined that the automatic performance flag is "0", that is, the normal performance mode, the process returns from the automatic performance processing routine to the main routine without performing any processing.

On the other hand, when it is determined that the automatic performance flag is "1", that is, the automatic performance mode is set, it is checked whether or not it is the sounding timing (step S51). That is, the content of a timer counter (not shown) is compared with the step time value included in the automatic performance data read from the automatic performance data storage unit 13 to check whether these match.

When it is determined that they coincide with each other, it is recognized that it is the sounding timing, and the data reading unit 3
2, the automatic performance data is read from the automatic performance data storage unit 13 (step S52). Then, the read automatic performance data is sent to the sounding channel assigning section 31. Pronunciation channel allocation unit 31
Assigns a tone generation channel to the received automatic performance data, and sends information about the assigned tone generation channel and the automatic performance data to the tone signal generator 14.

Next, a part volume data setting process is performed (step S53). That is, the volume value currently set in the part volume buffer (see FIG. 2 (C)) is sent to the tone signal generator 14.

Next, a tone generation process is performed (step S
54). That is, the tone signal generator 14 uses the assigned tone generation channels to generate
A musical tone signal having an amplitude level corresponding to the part volume value set above is generated, and a sound is generated through the amplifier 15 and the speaker 16. After that, the routine returns from this automatic performance processing routine and returns to the main routine.

On the other hand, if it is determined in step S51 that it is not the sounding timing, processing for shifting to the next track (part) is performed (step S5).
5). That is, when the automatic performance of a plurality of parts is being performed, for example, a process of changing the read address of the automatic performance data is performed in order to perform the same process as described above on the next track (part). .

Next, it is checked whether or not the automatic performance has ended (step S56). That is, it is checked whether or not the automatic performance data currently being processed is data having an END mark indicating the end of the automatic performance. When it is determined that the automatic performance has not ended, the routine returns from this automatic performance processing routine and returns to the main routine.

On the other hand, if it is determined in step S56 that the automatic performance has ended, automatic performance stop processing and ending processing are performed (step S57). That is,
The automatic performance flag is cleared to "0" and the timer counter stops counting up. After that, the routine returns from this automatic performance processing routine and returns to the main routine.

In the main routine, "other processing" is then carried out (step S14). In this "other process", various processes other than the above, such as MIDI
Data transmission / reception processing and the like are performed.

As described above, step S of the main routine
When an event corresponding to a panel operation or a keyboard operation occurs in the process of repeatedly executing 11 to S14, various functions of the electronic musical instrument are realized by performing a process corresponding to the event.

As described above, according to this embodiment, the correspondence between each part and the part volume device can be arbitrarily assigned, and the volume of each part is
It can be controlled by the part volume device assigned to each part.

As a result, even if the number of parts to be automatically played is larger than the number of sliders forming the part volume device, the correspondence between each part and slider can be changed easily without increasing the number of sliders. The volume of all parts can be changed by operation. Therefore, the performer sets the volume of the part that is not dynamically changed during the performance to a predetermined value in advance, and assigns the part that is dynamically changed during the performance to the slider, so that the condition that suits his or her preference can be obtained. You can enjoy playing electronic musical instruments with automatic accompaniment in the background.

In the above embodiment, the case where the drum, the bass, the chord 1, the chord 2 and the chord 3 are provided as the parts has been described, but the number of the parts is not limited to the above, and the number is arbitrary. The present invention is applicable to a number of parts. Also, the part volume device 12C
Explained the case with three sliders,
The number of sliders is not limited to three and may be any number.

[0088]

As described in detail above, according to the present invention,
It is possible to provide a volume control device for an electronic musical instrument in which the performer can easily set the automatic accompaniment to his / her favorite state by adjusting the volume of each part without increasing the number of part volume devices.

[Brief description of drawings]

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

FIG. 2 is a diagram showing an example of a part volume device, a part volume allocation table and a part volume buffer used in an embodiment of the present invention.

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

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

FIG. 5 is a flowchart showing an operation (keyboard processing) of the embodiment of the present invention.

FIG. 6 is a flowchart showing an operation (automatic performance process) of the embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration of a conventional volume control device for an electronic musical instrument.

[Explanation of symbols]

 10 CPU 11 keyboard device 12 operation panel 12A automatic performance switch 12B system switch 12C part volume device 13 automatic performance data storage unit 14 tone signal generation unit 15 amplifier 16 speaker 30 key press detection unit 31 sound generation channel assignment unit 32 data read unit 33 volume Allocation unit 34 Volume data setting unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Junichi Takano 200 Terashimacho, Hamamatsu City, Shizuoka Prefecture Kawai Musical Instrument Co., Ltd. (72) Inventor Yoshifumi Kira 200 Terashima-cho, Hamamatsu City, Shizuoka Prefecture Kawai Musical Instrument Mfg. Co., Ltd.

Claims (1)

[Claims] 1. An electronic musical instrument for automatically playing a plurality of parts, the volume indicating means having a plurality of volume devices for indicating the volume of a part, and each volume device of the volume indicating means is any one of the plurality of parts. Assigning means for allocating to each of the parts, a storage means for storing the automatic performance data of a plurality of parts, a reading means for sequentially reading the automatic performance data of the plurality of parts stored in the storage means, and an automatic performance data of a predetermined part by the reading means. When is read, based on the read automatic performance data,
A tone signal generating means for generating a tone signal having a volume designated by the volume device assigned to the part by the assigning means, and a volume control device for an electronic musical instrument.