JP3097888B2 - Electronic musical instrument volume setting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a volume setting device for an electronic musical instrument, which can set an appropriate volume when starting a rhythm performance or changing the rhythm.

[0002]

2. Description of the Related Art Conventionally, electronic musical instruments with a rhythm performance function have been developed and put to practical use. In such electronic musical instruments, generally, a plurality of rhythm performance data corresponding to a plurality of rhythms is stored in order to enable a plurality of types of rhythm performances.

[0003] When an operator selects a rhythm and instructs the start of rhythm performance, automatic performance of rhythm sound (rhythm performance) is started. That is, the control unit of the electronic musical instrument sequentially reads out the rhythm performance data corresponding to the selected rhythm and sends it to the sound source. In the sound source, a tone signal based on the rhythm performance data is generated and sent to a speaker to generate a rhythm sound.

In such a state that the rhythm performance is automatically performed by the operation, a melody performance or the like with the rhythm performance in the background can be performed by the player operating the keyboard.

It has been empirically known that an appropriate volume for performing a rhythm performance varies depending on each rhythm, and also differs depending on a player's sensitivity to the rhythm. Therefore, conventionally, after a player selects a rhythm and starts a rhythm performance, the player operates a volume switch to adjust the volume to an appropriate level. However, the conventional method has a problem that it takes time to set the sound volume to an appropriate value.

Therefore, recently, as a volume setting method for performing a rhythm, when a volume switch is operated after selecting a rhythm, or when a dedicated switch is pressed after selecting a rhythm, a method corresponding to each rhythm is set. Automatically set to a predetermined volume (first method)
It has been known. As another volume setting method, when a start of a rhythm performance is instructed, the volume is automatically set to a predetermined volume corresponding to each rhythm (second method).
Method) is known.

[0007]

However, the first method rarely causes a problem when a new rhythm performance is started, but causes a problem when it is desired to change the rhythm during the rhythm performance. In other words, if you change the rhythm during the rhythm performance, there will be a time zone where the rhythm performance with the new rhythm is performed at the volume corresponding to the previous rhythm,
There is a problem that the flow of rhythm performance is not smooth.

In the second volume setting method, the rhythm performance is forcibly started at a predetermined volume when the start of the rhythm performance is instructed, so that the player can perform the rhythm performance at a desired volume. There is a problem that cannot be started.

The present invention has been made in view of such circumstances, and allows a player to start a rhythm performance at a desired volume, and even if the rhythm is changed during the rhythm performance, the flow of the rhythm performance is impaired. It is an object of the present invention to provide a volume setting device for an electronic musical instrument that can prevent the sound from being played.

[0010]

In order to achieve the above object, a first aspect of a volume setting device for an electronic musical instrument according to the present invention is as follows.
In an electronic musical instrument for performing a rhythm performance corresponding to a plurality of rhythms, a rhythm selection unit for selecting a predetermined rhythm from the plurality of rhythms, and a volume setting for setting a volume of a rhythm performance by the rhythm selected by the selection unit Means, rhythm performance start instructing means for instructing the start of a rhythm performance by the rhythm selected by the selection means, and when the start of the rhythm performance is instructed by the rhythm performance start instructing means, the rhythm selection means performs a predetermined operation. Is selected and a new volume is set by the volume setting means, a rhythm performance is performed at the newly set volume, a predetermined rhythm is selected by the rhythm selection means, and the volume setting is performed. Control means for performing a rhythm performance at a predetermined volume corresponding to the selected rhythm if a new volume is not set by the means; and Characterized by comprising.

For the same purpose, a second aspect of the electronic musical instrument volume setting device according to the present invention is an electronic musical instrument for performing rhythm performance corresponding to a plurality of rhythms. Rhythm selection means, volume setting means for setting the volume of the rhythm performance by the rhythm selected by the selection means, and rhythm performance start means for instructing the start of the rhythm performance by the rhythm selected by the selection means Fixed instruction means for instructing that the volume of the rhythm performance should be fixed to the previous volume, and when the start of the rhythm performance is instructed by the rhythm performance start instruction means, there is an instruction by the fixed instruction means, And if a new volume is set by the volume setting means, a rhythm performance is performed at the newly set volume, and there is an instruction from the fixed instruction means, and If no new volume is set in an amount setting means, control means for causing the rhythm performance at the volume set at that time, characterized by comprising and.

[0012]

In the volume setting device for an electronic musical instrument according to the first aspect, a predetermined rhythm is selected by the rhythm selection means, a new volume is set by the volume setting means, and then a start of rhythm performance is instructed. In this case, a rhythm performance is performed at the newly set volume. On the other hand, when a predetermined rhythm is selected by the rhythm selection unit and then the start of the rhythm performance is instructed without setting a new volume by the volume setting unit, for example, at a volume specified in advance by preset volume data. Perform rhythm performance.

[0013] With this arrangement, the player can instruct the start of the rhythm performance by the rhythm performance start instructing means as it is, when it is not necessary to change the volume particularly when the rhythm is selected and the rhythm performance is performed. Rhythm performance can be started at a volume predetermined as an appropriate value of the rhythm. On the other hand, if the user wants to change the volume predetermined as an appropriate value of the rhythm selected by the rhythm selection means, the user operates the volume setting means to set a desired volume value, and then sets the rhythm performance start means to the rhythm performance start instruction means. By instructing the start of the rhythm, the rhythm performance can be started at a volume suitable for one's own sensitivity.

Further, in the electronic musical instrument volume setting device according to the second aspect, the predetermined rhythm is set by the rhythm selecting unit in a state in which the fixing instruction unit indicates that the volume should be fixed to the previous state. When the selection is made, a new volume is set by the volume setting means, and then the start of the rhythm performance is instructed, the rhythm performance is performed at the newly set volume. On the other hand, in a state in which it is instructed that the volume should be fixed to the previous state by the fixing instructing means, a predetermined rhythm is selected by the rhythm selecting means, and then the rhythm is set without setting a new volume by the volume setting means. When the start of the performance is instructed, the rhythm performance is performed at the volume set in the rhythm performance before the rhythm selection is performed.

Thus, if the player does not want to change the volume even if the rhythm is changed, the performer instructs the change in advance by the fixed instruction means, and then selects the rhythm.
The volume at the time of the conventional rhythm performance can be continued as it is. Also, even when the volume is not changed by the fixed instruction unit, the rhythm performance is performed at that volume if the volume is newly set by the volume setting unit.
Therefore, it is possible to prevent a time zone of a volume not intended by the player from occurring when the rhythm is changed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a volume setting device for an electronic musical instrument according to the present invention will be described below 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 to which a volume setting device of the present invention is applied. The configuration shown in the block diagram is commonly applied to the first and second embodiments described below.

This electronic musical instrument has a central processing unit (hereinafter referred to as "C").
PU ". 10, a program memory 11, a random access memory (hereinafter, referred to as "RAM") 12,
Panel interface circuit 13, keyboard interface circuit 15, rhythm performance data memory 17, waveform memory 18
The main components of a sound source (tone generator) 19 are connected to each other.

The system bus 30 includes, for example, an address line,
It consists of data lines and control signal lines. This system bus 3
0 is used for transmitting and receiving various data between the above-described components. In the following description, the description that data is transmitted and received between the above-described components via the system bus 30 will be omitted. This system bus 30 has a CP
U10 and the sound source 19 are used in time division.

The CPU 10 corresponds to the control means. The CPU 10 controls the entire electronic musical instrument according to a control program stored in the program memory 11. For example, the CPU 10 performs a process of generating a predetermined tone based on various information transmitted from the operation panel 14 or the keyboard device 16. Further, the CPU 10 performs a process of performing a predetermined rhythm performance based on the rhythm performance data sent from the rhythm performance data memory 17.
Details of these will be described later.

The CPU 10 includes a time counter (not shown). The operation of the time counter is started by a start command, and thereafter, the time counter performs a count-up operation at a constant cycle. This time counter is used to detect the timing of sound generation or mute in a rhythm performance process described later.

The program memory 11 is constituted by, for example, a ROM. The program memory 11 stores a control program for operating the CPU 10 described above, and also stores various fixed data used by the CPU 10 for various processes. The contents of the program memory 11 are read by the CPU 10. That is, CPU1
0 reads out a control program (instruction) from the program memory 11, interprets and executes it, and reads out predetermined fixed data and uses it for various processes.

The RAM 12 temporarily stores various data used for executing the control program. RA
In M12, for example, areas such as a data buffer, a register, a counter, and a flag are defined. This RAM1
2 is accessed by the CPU 10.

An operation panel 14 is connected to the panel interface circuit 13. This operation panel 14
It is used to instruct the electronic musical instrument to perform various operations. The operation panel 14 includes, for example, as shown in FIG.
Rhythm start switch 140, rhythm selection switch 1
41, a volume switch 142 and a display 143 are provided. Although the operation panel 14 is provided with various switches and indicators other than those described above, FIG. 2 shows only those parts directly related to the present embodiment.

The rhythm start switch 140 corresponds to rhythm performance start instructing means, and is used to instruct start or stop of rhythm performance. The rhythm start switch 140 is formed of, for example, a switch that is turned on and off alternately each time the switch is pressed.

The rhythm selection switch 141 corresponds to rhythm selection means. This rhythm selection switch 1
Reference numeral 41 denotes a plurality of switches corresponding to various rhythms such as, for example, 8 beats, waltz, and mambo. When any one of the rhythm selection switches 141 is pressed, the rhythm is selected.

The volume switch 142 corresponds to volume setting means and fixing instruction means. This volume switch 142 is a volume up switch 14
2A and a volume down switch 142B. Then, the volume up switch 142
Control is performed such that the volume value increases each time A is pressed, and decreases each time the volume down switch 142B is pressed.

Data input using the volume switch 142 is stored in a volume buffer provided in the RAM 12. This volume switch 1
Reference numeral 42 can be replaced by a numeric keypad, a slide volume device, a rotary volume device, or the like.

The display 143 displays, for example, L of 7 segments.
An ED display is provided for two digits. The display 143 displays numbers, English characters, and the like according to data sent from the CPU 10. For example, when the rhythm selection switch 141 is operated, the rhythm number of the rhythm corresponding to the pressed switch is displayed, and when the volume switch 141 is operated, the volume value corresponding to the operation is displayed. Controlled.

In this embodiment, the display 143 displays
Although the LED of the segment is exemplified by two digits, the present invention is not limited to this. For example, display 1
43 may be provided with a 7-segment LED for one digit or three or more digits, or an LC capable of displaying characters and numerals.
It may be configured using a D display or a CRT, or may be configured using various other display devices.

The panel interface circuit 13 controls transmission and reception of data between the operation panel 14 and the CPU 10. That is, the panel interface circuit 13
Sends a scan signal to the operation panel 14 and inputs a signal indicating ON / OFF of each switch returned from the operation panel 14 in response to the scan signal. Then, from this signal, panel data is generated by associating ON / OFF of each switch with a bit, and sent to the CPU 10. This panel data is stored in the RA under the control of the CPU 10.
It is stored in M12 and used to determine the presence or absence of a panel event (details will be described later).

Further, the panel interface circuit 13 includes:
The display data sent from the CPU 10 is sent to the operation panel 14. As a result, a predetermined number or English character is displayed on the display 143.

A keyboard device 16 is connected to the keyboard interface circuit 15. The keyboard device 16 has a plurality of keys for indicating a pitch. As the keyboard device 16, for example, a two-contact type keyboard device is used, and it is possible to detect initial touch data as well as turn on / off a key. That is, each key of the keyboard device 16 has two key switches that are turned on / off by a key press or key release operation, and each key switch is turned on / off at a different pressing depth.

The keyboard interface circuit 15 controls transmission and reception of data between the keyboard device 16 and the CPU 10. Specifically, the keyboard interface circuit 15
A scan signal is sent to the keyboard device 16, and a signal indicating the on / off state of two key switches of each key returned from the keyboard device 16 in response to the scan signal is received.

Then, from the received signals, key data in which each key is turned on / off corresponding to one bit and initial touch data indicating the speed (strength) of key pressing are generated and sent to the CPU 10. The key data is used to determine the presence or absence of a keyboard event. The initial touch data is used to control the tone and volume.

The rhythm performance data memory 17 stores, for example, R
OM. This rhythm performance data memory 1
7, a start address table and a preset volume table are stored in addition to rhythm performance data corresponding to a plurality of rhythms.

The rhythm performance data is composed of data for generating three part sounds, for example, a chord, a bass and a drum. The rhythm performance data of each part is created, for example, in the same format as the MIDI data, and includes step time data for instructing the sound generation timing.

In this embodiment, it is assumed that each part is associated with each sound channel (CHn) as follows. CH0: Melody CH1: Melody CH2: Chord CH3: Bass CH4: Drum

The rhythm performance data stored in the rhythm performance data memory 17 is converted into a format that can be processed by the sound source 19 in a rhythm performance process described later and sent to the sound source 19.

The start address table is a table that stores the start address of rhythm performance data corresponding to each rhythm. When the rhythm is changed, the start address of the rhythm performance data corresponding to the newly selected rhythm is extracted from the start address table.

In the preset volume table, when performing a rhythm performance based on predetermined rhythm performance data, volume data (preset volume data) having an optimum volume for the rhythm performance is stored for each rhythm. I have.

The rhythm performance data, the start address table and the preset volume table are:
Instead of the rhythm performance data memory 17, it may be configured to be stored in a part of the RAM 12. In this case, for example, a floppy disk drive (or RO
(M card controller) and rhythm performance data, a start address table and a preset volume table stored in a floppy disk (or ROM card). For example, when the electronic musical instrument is powered on, it is mounted on the floppy disk device. The above data may be loaded into the RAM 12 from a floppy disk (or a ROM card inserted into the ROM card control device).

The waveform memory 18 stores pulse code modulated (PCM) waveform data. The waveform memory 18 stores a plurality of types of waveform data corresponding to each tone, each key range, a key pressing speed, and the like in order to realize a plurality of types of tone colors.

The sound source 19 has, for example, a plurality of oscillators. Then, one to several oscillators are assigned to each tone generation channel that generates the tone of each part. The oscillator to which the sound is assigned reads out the waveform data stored in the waveform memory 18 in a time-division manner, adds an envelope thereto, and generates a digital tone signal. The digital tone signal generated by the sound source 19 is sent to a D / A converter 20.

The D / A converter 20 converts an input digital tone signal into an analog tone signal and outputs it. The analog tone signal output from the D / A converter 20 is sent to the amplifier 21.

The amplifier 21 amplifies the input analog tone signal at a predetermined amplification rate and outputs the amplified signal. The analog musical tone signal output from the amplifier 21 is
Sent to

The speaker 22 is of a well-known type for converting an analog musical tone signal as an electric signal into an acoustic signal. The speaker 22 emits a tone corresponding to the key depression of the keyboard device 16 or the rhythm performance data read from the rhythm performance data memory 17.

The rhythm selection switch 141 described above
Is exemplified by a plurality of switches provided for each rhythm. Like the volume switch 142, an up-down switch composed of an up switch "+" and a down switch "-" or a numeric keypad or the like is used. It can also be configured.

When the rhythm selection switch 141 is constituted by an up / down switch, the volume switch 142 may be constituted so as to also serve as a rhythm selection switch. In this case, the volume switch 142 is defined as a general-purpose switch, and a mode switch for switching the operation mode of the general-purpose switch is separately provided. When the mode switch is set to the volume setting mode, the general-purpose switch is used to set the volume,
When the mode switch is set to the rhythm selection mode, the rhythm selection mode is used to select a rhythm number.

Further, when the mode changeover switch is set to a mode other than the above, for example, a tone color selection mode, a sound effect selection mode or a tempo setting mode, the mode is operated as a tone color selection switch, a sound effect selection switch or a tempo setting switch, respectively. It is also possible to configure so that When operating as a tone selection switch, it is used to select one tone from a plurality of tones, and when operating as a sound effect selection switch, one sound effect (for example, reverb) is selected from a plurality of sound effects. When used as a tempo setting switch, it is used to control the tempo value. According to such a configuration, the number of switches can be reduced.

Next, the operation of the electronic musical instrument to which the volume setting device according to the present invention has been applied in the above configuration will be described with reference to the drawings, focusing on the operation as the volume setting device.

(Embodiment 1) FIGS. 3 to 8 are flowcharts showing the operation of the embodiment 1 of the volume setting device according to the present invention. In the first embodiment, when the rhythm start switch 140 is pressed without operating the volume switch 142 after the rhythm selection switch 141 is operated, a rhythm performance is performed at a volume based on the preset volume data. , Rhythm selection switch 141
Is operated, the volume switch 142 is operated, and then, when the rhythm start switch 140 is pressed, the rhythm is performed at the volume set by the volume switch 142.

Hereinafter, the operation for realizing the above functions will be described in detail. FIG. 3 is a flowchart showing a main routine of the electronic musical instrument, which is started when the power is turned on. That is, when the power is turned on, first, an initialization process 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 an initial value to a register, a counter, a flag, or the like defined in the RAM 12. In this initialization process, the sound source 19
A predetermined process is also performed to prevent unnecessary sound from being generated when the power is turned on. When the initialization process ends, a switch event process is performed (step S11). For details of this switch event processing,
This is shown in the flowchart of FIG.

In the switch event processing, first, the presence or absence of a switch event is checked (step S20). This is performed as follows. That is, first, data indicating the on / off state of each switch (hereinafter, referred to as “new panel data”) obtained by scanning the operation panel 14 by the panel interface circuit 13 is fetched as a bit string corresponding to each switch.

Next, a panel event map in which different bits are turned on is created by comparing the data previously read and already stored in the RAM 12 (hereinafter referred to as "old panel data") with the new panel data. I do. The presence or absence of a switch event is determined by referring to the panel event map. That is, if there is at least one ON bit in the panel event map, it is determined that a switch event has occurred.

If it is determined in step S20 that there is no switch event, the process returns from the switch event processing routine and returns to the main routine. on the other hand,
If it is determined in step S20 that there is a switch event, then it is checked whether or not the switch event is an event of the rhythm selection switch 141 (step S21). This is performed by checking whether the bit corresponding to each switch of the rhythm selection switch 141 in the panel event map is on.

If it is determined that the event is not the event of the rhythm selection switch 141, the process proceeds to step S23. If it is determined that the event is the event of the rhythm selection switch 141, a rhythm change process is performed (step S23). S22). Details of the rhythm change processing are shown in the flowchart of FIG.

In the rhythm changing process, first, a preset volume request flag is set to "1" (step S40). The preset volume request flag is a flag defined in the RAM 12, and is used to indicate that the volume of the rhythm performance should be changed to the volume specified by the preset volume data. This preset volume request flag is set to “1” when the rhythm selection switch 141 is operated, and is cleared to “0” when either the volume up switch 142A or the volume down switch 142B is operated. Is controlled as follows.

Next, the rhythm number of the rhythm corresponding to the pressed switch of the rhythm selection switch 141 is set in the rhythm number register (step S41). The rhythm number register is a register provided in the RAM 12, and is used to store the rhythm number selected by the rhythm selection switch 141. The correspondence between the pressed rhythm selection switch 141 and the rhythm number is stored in the program memory 11 in a table format, for example.

Next, it is checked whether or not the rhythm performance flag is "1" (step S42). Here, if it is determined that the rhythm performance flag is not "1", that is, it is determined that the rhythm performance is not being performed, the setting state of all parts, that is, the sound channels CH0 to CH4 is turned off and set in the rhythm number register. The bass and chord timbres corresponding to the rhythm number are set (step S4).
3). As a result, for example, a wood-based bass sound is changed to an electric bass sound, or a piano chord sound is changed to a string chord sound. Thereafter, the flow branches to step S46.

In step S46, the rhythm number is displayed on the display 143. That is, the data corresponding to the rhythm number set in the rhythm number register is sent to the operation panel 14 via the panel interface circuit 13, so that the selected rhythm number is displayed. This allows the player to know which rhythm is currently selected. Thereafter, the routine returns from the rhythm change processing routine and returns to the switch event processing routine.

On the other hand, if it is determined in step S42 that the rhythm performance flag is "1", that is, the rhythm performance is being performed, a rhythm stop process is performed (step S44). Thereby, the chord progression is stopped, and the chord expansion process is stopped.

Next, a rhythm start process is performed (step S45). The rhythm start process will be described later in detail, but if the preset volume request flag is “1”, the volume is based on the volume data stored in the preset volume table and the preset volume request flag is “0”. If
At the volume based on the volume data set at that time,
A rhythm performance (chord progression and chord expansion processing) corresponding to the rhythm number set in the rhythm number register is started.

Next, the rhythm number is displayed on the display 143 (step S46). Thereafter, the routine returns from the rhythm change processing routine and returns to the switch event processing routine.

Next, in the switch event processing routine, it is checked whether or not an event of the volume switch 142 has occurred (step S23). This is performed by checking whether a bit corresponding to the volume up switch 142A or the volume down switch 142B in the panel event map is on.

If it is determined that the event is not an event of the volume switch 142, the process proceeds to step S25, and
On the other hand, when it is determined that the event is the event of the volume switch 142, a volume change process is performed (step S24). Details of the volume change processing are shown in the flowchart of FIG.

That is, in the volume change process, first, it is checked whether or not the event is an ON event of the volume up switch 142A (step S50). When it is determined that the event is the ON event of the volume up switch 142A, the currently set volume data (stored in the current volume register provided in the RAM 12) is taken into the temporary buffer A (step S53). It is checked whether or not the content of the temporary buffer A, that is, the current volume data is equal to or larger than the maximum value (step S54). Here, the maximum value means the maximum volume of the electronic musical instrument. For example, in a configuration in which the volume is controlled in 128 steps from "0 to 127", "127" is the maximum value.

If it is determined that the value is not equal to or larger than the maximum value, the contents of the temporary buffer A are incremented (step S55), and thereafter, the process proceeds to step S56.
On the other hand, if it is determined in step S54 that the value is equal to or larger than the maximum value, the process in step S55 is skipped.
Thus, the sound volume is controlled so as not to exceed the maximum value determined in the electronic musical instrument.

If it is determined in step S50 that the event is not an ON event of the volume up switch 142A, that is, an ON event of the volume down switch 142B, the volume data set in the current volume register is fetched into the temporary buffer A. (Step S59), the temporary buffer A
, That is, the current volume data is less than or equal to the minimum value (step S60). Here, the minimum value means the minimum volume of the electronic musical instrument, for example,
In the case of a configuration in which the volume is controlled in 128 levels of “0 to 127”, “0” is the minimum value.

If it is determined that the value is not smaller than the minimum value, the contents of the temporary buffer A are decremented (step S61), and thereafter, the flow branches to step S56. On the other hand, if it is determined in step S60 that the value is equal to or smaller than the minimum value, the process in step S61 is skipped. Thus, the sound volume is controlled so as not to be lower than the minimum value determined in the electronic musical instrument.

In step S56, the above-mentioned step S55
Alternatively, by setting the content of the temporary buffer A updated in S61 in the current volume register, the current value of the new volume data is obtained. Next, the preset volume request flag is cleared to "0" (step S57). By clearing this preset volume request flag to “0”,
In a rhythm start processing routine described later, a rhythm performance is performed at a volume based on the current volume data stored in the current volume register, that is, the volume data set by the volume up switch 142A. Thereafter, the routine returns from the volume change processing routine and returns to the switch event processing routine.

Next, in the switch event processing routine, it is checked whether or not there is an event of the rhythm start switch 140 (step S25). This is performed by checking whether or not the bit corresponding to the rhythm start switch 140 in the panel event map is on.

Here, when it is determined that there is an event of the rhythm start switch 140, it is checked whether or not the event is an ON event (step S2).
6). This is performed by checking whether or not the bit corresponding to the rhythm start switch 140 in the new panel data is on.

If it is determined that the rhythm start switch 140 is turned on, the rhythm performance flag is set to "1" (step S2).
7). The rhythm performance flag is a flag defined in the RAM 12, and is used to store that the electronic musical instrument is in the rhythm performance mode. When the rhythm performance flag is set to "1", the electronic musical instrument is shifted to the rhythm performance mode.

Next, a start process of the time counter is performed (step S28). This is a process of giving a start command to a time counter (not shown) included in the CPU 10 to start a count-up operation. Or later,
This time counter is counted up at fixed time intervals.

Next, a rhythm start process is performed (step S29). Details of the rhythm start process are shown in the flowchart of FIG.

In the rhythm start process, first, it is checked whether or not the preset volume request flag is set to "1" (step S71). And
When it is determined that the rhythm is set to "1", it is recognized that the volume switch 142 has not been operated after the rhythm is selected, and the rhythm number selected at that time (stored in the rhythm number register). ) Is retrieved from the preset volume table and set in the current volume register (step S72). As a result, the rhythm performance is performed at a volume determined in advance as being optimal for the selected rhythm.

On the other hand, if it is determined that the preset volume request flag has been cleared to "0",
After the selection of the rhythm, it is recognized that the volume switch 142 has been operated, and the processing in step S72 is skipped. As a result, the rhythm performance is performed at a volume corresponding to the volume data set in the current volume register at that time, in other words, the volume data set by the volume switch 142.

Next, the time signature and tempo are set (step S73). This is a process of setting the time signature and the tempo in a predetermined register since the time signature and the tempo are input using switches (not shown) on the operation panel 14.
In the following, a rhythm performance is performed based on the time signature and tempo set in the predetermined register.

Next, the start address of the rhythm performance data is read (step S74). That is, the start address is read from the entry of the start address table corresponding to the rhythm number set in the rhythm number register. Then, the start address of the read rhythm performance data is set in the current pointer (step S75).

Here, the current pointer is stored in the RAM 12
And is used to store the current position of the rhythm performance data. The start address is set to this current pointer as an initial value,
It is incremented each time processing of one data (hereinafter referred to as “step data”) in the rhythm performance data is completed.

Next, a chord timbre is read (step S76). That is, since the timbre of the chord part is input using a switch (not shown) of the operation panel 14, this is read as timbre data. This tone color data is set in a predetermined register (step S77).
Thus, the timbre of the chord part when performing the rhythm performance is determined.

Next, reading of a bass tone is performed (step S78). That is, since the timbre of the bass part is input using a switch (not shown) of the operation panel 14, this is read as timbre data. This tone color data is set in a predetermined register (step S79).
Thus, the tone color of the bass part when performing the rhythm performance is determined. As described above, when the rhythm start processing ends, the routine returns from the rhythm start processing routine and returns to the switch event processing routine.

In the switch event processing routine,
If it is determined in step S26 that the event of the rhythm start switch 140 is not an ON event, the rhythm performance flag is cleared to "0" (step S3).
0). By clearing the rhythm performance flag to "0", the electronic musical instrument is shifted from the rhythm performance mode to the normal performance mode.

Next, stop processing of the time counter is performed (step S31). This is a process of giving a stop command to a time counter (not shown) included in the CPU 10 to stop the operation, and thereafter, the count-up operation of the time counter is stopped.

If the processing for the event of the rhythm start switch 140 (steps S25 to S31) is completed, or if it is determined in step S25 that the event is not the event of the rhythm start switch 140, then,
Processing for other switches is performed (step S
33). By this "other switch processing", for example, processing for each switch event such as a tone selection switch, a sound effect selection switch, and a tempo setting switch is performed, but these processings are not directly related to the present invention. Therefore, the description is omitted. When the "other switch process" is completed, the process returns from the switch event process routine and returns to the main routine.

Next, in the main routine, a keyboard event process is performed (step S12). In this keyboard event processing, first, the presence or absence of a keyboard event is checked.
This is performed as follows. That is, by scanning the keyboard device 16 with the keyboard interface circuit 15, data indicating the pressed state of each key (hereinafter, referred to as "new key data") is captured as a bit string corresponding to each key.

Next, the data previously read and stored in the RAM 12 (hereinafter referred to as "old key data") is compared with the new key data to determine whether or not there is a different bit. Create a key event map with different bits turned on. The determination of the presence / absence of a keyboard event is made by referring to this key event map. That is, if there is at least one bit that is on in the key event map, it is determined that a keyboard event has occurred.

When it is determined that a keyboard event has occurred by referring to the key event map created above, keyboard event processing is performed. In the keyboard event processing, in the event of a key on event, a predetermined oscillator in the sound source 19 is assigned to the melody part (sounding channel CH0 or CH1).

Next, based on the key number indicating the key having the ON event, the initial touch data indicating the strength (speed) of pressing the key, the tone number selected at that time, for example, a waveform address, Frequency data, envelope data, filter coefficients, etc. are generated,
It is sent to the sound source 19. Thus, by the above-described operation, the tone assigned to the tone generator 19 is generated based on the data.

On the other hand, if there is an off event, the sound source 19 assigned to the key having the off event
The inside oscillator is searched, and predetermined data is sent to the sound source 19 to mute the sound.

When the keyboard event process is completed, a rhythm performance process is performed (step S13). Details of the rhythm performance processing are shown in the flowchart of FIG.

In the rhythm performance processing, it is first checked whether the rhythm performance flag is "1" (step S9).
0). When it is determined that the rhythm performance flag is "0", that is, in the normal performance mode, the routine returns from the rhythm performance processing routine to the main routine without performing the following processing.

On the other hand, if the rhythm performance flag is "1",
If it is determined that the mode is the rhythm performance mode, rhythm performance data is read (step S91). That is, the CPU 10 selects one of the rhythm performance data in the rhythm performance data memory 17 indicated by the current pointer.
Retrieve two step data. Next, the presence or absence of a rhythm performance event is checked (step S92). This is performed by comparing a step time included in the step data with a time value counted up by a time counter (not shown).

Here, when it is determined that there is no rhythm performance event, that is, the result of the comparison does not match, it is recognized that the sound generation or silencing timing has not been reached yet.
The routine returns from the rhythm performance processing routine to the main routine without performing the following processing. In this case, the current pointer maintains the original state without being incremented. Therefore, in step S91, the same step data is read out next time.

On the other hand, if it is determined that there is a rhythm performance event, that is, it is determined that the above-mentioned comparison results match, it is recognized that the sounding or silencing timing has arrived, and then the step read from the rhythm performance data memory 17 is executed. It is checked whether the data is note-on data (step S93).

Here, when it is determined that the data is note-on data, a tone generation process is performed (step S94).
At this time, the current pointer is incremented. Therefore, in the next step S91, the next step data is read.

The sound generation process is performed in the rhythm performance data memory 17.
Based on the step data read from, for example, a waveform address, frequency data, envelope data, a filter coefficient, and the like are generated, and are the same as the above-described sound generation processing in the keyboard event processing except that they are sent to the sound source 19. Description is omitted. Thereafter, the process returns from the rhythm performance processing routine and returns to the main routine.

If it is determined in step S93 that the data is not note-on data, then it is checked whether the data is note-off data (step S95). And
If it is determined that the data is note-off data, a mute process is performed (step S96).

In this silencing process, as in the case of the key-off event in the keyboard event process described above, the oscillator assigned to the musical tone for which the note-off is instructed is searched, and predetermined data is sent to the tone generator 19 to generate sound. This is the process of silencing the middle sound. Thereafter, the process returns from the rhythm performance processing routine and returns to the main routine.

If it is determined in step S95 that the data is not note-off data, then it is checked whether it is an end mark (step S97). The end mark is special data indicating the end of the rhythm performance data. Here, if it is determined that it is an end mark,
The rhythm performance flag is cleared to "0" (step S9
8) Then, the process returns from the rhythm performance processing routine and returns to the main routine. As a result, the rhythm performance ends, and the mode shifts to the normal performance mode.

In step S98, a rhythm start processing routine may be called instead of clearing the rhythm performance flag to "0".
According to this configuration, even if a series of rhythm performances is completed, the same rhythm performance is started again, so that the same rhythm performance can be repeated.

If it is determined in step S97 that the mark is not an end mark, other processing is performed (step S99). The "other processing" includes processing for rhythm performance data other than the above-mentioned note-on, note-off, or end mark, for example, tone color change processing, volume change processing, and the like. Is omitted. When this "other processing" is completed, the routine returns from the rhythm performance processing routine and returns to the main routine.

Next, in the main routine, other processing is performed (step S14). The “other processing” includes MIDI data transmission / reception processing performed via a MIDI interface circuit (not shown). Thereafter, the process returns to step S11, and the same processing is repeated thereafter. When an event based on a panel operation or a keyboard operation occurs in the process of repeatedly executing steps S11 to S14, various functions as an electronic musical instrument are exhibited by performing processing corresponding to the event.

As described above, according to the first embodiment, a predetermined rhythm is selected by the rhythm selection switch 141, a new volume is set by the volume switch 142, and then the rhythm start switch 140 is pressed. In this case, a rhythm performance is performed at the newly set volume.
On the other hand, when a predetermined rhythm is selected by the rhythm selection switch 141 and then the rhythm start switch 140 is pressed without setting a new volume by the volume switch 142, the volume is set at a volume specified in advance by the preset volume data. Perform rhythm performance.

Thus, when the rhythm is to be performed by selecting a rhythm, the player can press the rhythm start switch 140 and instruct the start of the rhythm performance without changing the volume. Rhythm performance can be started at a volume predetermined as an appropriate value of the rhythm. On the other hand, if the user wants to change the volume of the selected rhythm, the user operates the volume switch 142 to set a desired volume value, and then presses the rhythm start switch 140 to start the rhythm performance, thereby matching the user's sensitivity. Rhythm performance can be started at the volume.

(Embodiment 2) In Embodiment 2, after the volume up switch 142A and the volume down switch 142B are simultaneously pressed, the rhythm selection switch 1
41 to select the rhythm, and use the volume switch 1
Rhythm start switch 140 without operating 42
Is pressed, a new rhythm performance is performed at the volume set at that time, that is, the volume before changing the rhythm, and after simultaneously pressing the volume up switch 142A and the volume down switch 142B,
Operate the rhythm selection switch 141 to select a rhythm,
When the rhythm start switch 140 is pressed after the volume is changed by operating the volume switch 142, a new rhythm performance is performed at the volume set by the volume switch 141.

Hereinafter, the operation for realizing the above functions will be described in detail. In the second embodiment, the main routine (FIG. 3), switch event processing routine (FIG. 4), rhythm change processing routine (FIG. 5), and rhythm performance processing routine (FIG. 8) used in the first embodiment are used as they are. Therefore, the description is omitted.

The volume change processing routine (FIG. 6) and the rhythm start processing routine (FIG. 7) are partially modified and used. The above routines after the change are shown in FIGS. 9 and 10, respectively. Hereinafter, a description will be given focusing on a portion changed from the first embodiment.

In the second embodiment, a volume fixing flag is used to control the volume. This volume fixed flag is a flag defined in the RAM 12, and is used to indicate that the volume of the rhythm performance should be performed at the conventional volume. This volume fixed flag becomes “1” when the volume up switch 142A and the volume down switch 142B are pressed at the same time.
Is controlled to be cleared to “0” when either the volume up switch 142A or the volume down switch 142B is operated.

That is, if it is determined in the switch event processing routine (FIG. 4) that the event is a volume switch 142 event, a volume change process is performed (step S24). Details of the volume change processing are shown in the flowchart of FIG. In FIG. 9, the same steps as those in FIG. 6 are denoted by the same reference numerals, and description thereof will be omitted or simplified.

In the volume change processing, first, it is checked whether or not there is an ON event of the volume up switch 142A (step S50). Then, when it is determined that there is an ON event of the volume up switch 142A, the volume down switch 142
It is checked whether there is an ON event of B (step S51). Then, the volume down switch 142B
Is determined, the volume up switch 142A and the volume down switch 142B are determined to have been pressed simultaneously, and the volume fixing flag is set to "1" (step S52). Thereafter, the routine returns from the volume change processing routine and returns to the switch event processing routine. This allows
Thereafter, even when the rhythm is changed using the rhythm selection switch 141, the rhythm performance is performed at the volume used in the previous rhythm performance.

When the volume up switch 142A and the volume down switch 142B are pressed simultaneously, these switches are not used to change the volume,
It is used as a switch for indicating that the volume should be fixed. Note that a special switch may be provided as a switch for indicating that the volume should be fixed. In this case, a step for checking whether the special switch is on or off may be provided instead of steps S50 and S51.

On the other hand, the volume up switch 142A
Alternatively, when one of the volume down switches 142B is pressed, as described above with reference to FIG.
The contents of the current volume register are incremented or decremented (steps S53 to S57, S59).
-S61), and finally, the volume fixing flag is cleared to "0" (step S58). Thereafter, the routine returns from the volume change processing routine and returns to the switch event processing routine.

Thus, the volume up switch 1
42A or the volume down switch 142B is pressed, the volume up switch 142A and the volume down switch 142B
Is pressed at the same time to indicate that the volume should be fixed, the rhythm performance is started at the volume newly set by the volume switch 141.

In the rhythm start processing routine, the following control is performed with reference to the volume fixed flag set or cleared in the volume change processing routine. That is, in the rhythm start process, first, it is checked whether or not the volume fixing flag is set to "1" (step S70). If it is determined that the preset volume request flag is set to "1", a process of checking on / off of the following preset volume request flag (step S71) and a process of setting preset volume data in the current volume register (step S7)
2) is skipped.

This means that the rhythm performance starts at the volume based on the volume data set in the current volume register, that is, the volume used in the previous rhythm performance, regardless of whether the preset volume request flag is on or off. Means to be done.

On the other hand, if it is determined in step S70 that the volume fixing flag is not set to "1", as in the case of the first embodiment, the preset volume request flag is turned on / off. A rhythm performance is performed at a predetermined volume as preset volume data, or a rhythm performance is performed at a volume set by the volume switch 142.

It is preferable that the volume fixed flag is cleared not only when either the volume up switch 142A or the volume down switch 142B is pressed but also when the rhythm performance ends. This can be realized by adding processing for clearing the volume fixed flag to “0” in step S98 of the rhythm performance processing routine and step S31 of the switch event processing routine shown in FIG. According to this configuration, for example, when the rhythm performance is temporarily stopped and then performed again,
Even if the user forgets to fix the volume value, the rhythm performance can be started from the initial state.

As described above, according to the second embodiment, when the volume up switch 142A and the volume down switch 142B are simultaneously pressed to instruct that the volume be fixed to the previous state,
A predetermined rhythm is selected by the rhythm selection switch 141,
Next, when one of the volume up switch 142A and the volume down switch 142B is depressed, a new volume is set, and thereafter, when the start of the rhythm performance is instructed by the rhythm start switch 140,
Perform the rhythm performance at the newly set volume. On the other hand, in a state where it is instructed that the volume should be fixed to the previous state by simultaneously pressing the volume up switch 142A and the volume down switch 142B, a predetermined rhythm is selected by the rhythm selection switch 141, and then the volume up is performed. If the start of the rhythm performance is instructed by the rhythm start switch 140 without operating the switch 142A or the volume down switch 142B, the rhythm performance is performed at the volume set in the previous rhythm performance before the rhythm selection is performed. I'm trying to do it.

Thus, if the player does not want to change the volume even if the rhythm is changed, the volume up switch 142A and the volume down switch 142B
By simultaneously pressing and selecting the rhythm, the volume at the time of the previous rhythm performance can be continued as it is. Further, even when the volume is fixed by pressing the volume up switch 142A and the volume down switch 142B at the same time, pressing one of the volume up switch 142A and the volume down switch 142B causes a new one. , The rhythm performance is performed at that volume. Therefore, it is possible to prevent a time zone of a volume not intended by the player from occurring when the rhythm is changed.

In the first and second embodiments, the operation for controlling the volume of the rhythm performance of all parts has been described. However, if a volume switch is provided for each part, the volume for each part can be reduced. The same applies to control. In addition, the present invention can be similarly applied to a case where all parts are classified into a plurality of groups including one or a plurality of parts, and the volume is controlled for each group.

In the first and second embodiments, the case where the volume is changed from the operation panel 14 using the volume switch 142 has been described. However, the volume change data included in the rhythm performance data, or
The same applies to a case where the volume is changed by volume change data included in MIDI data transmitted from the outside.

[0125]

As described in detail above, according to the present invention,
It is possible to provide a volume setting device for an electronic musical instrument that enables a player to start a rhythm performance at a desired volume and to prevent the flow of the rhythm performance from being impaired even if the rhythm is changed during the rhythm performance.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of an electronic musical instrument to which a volume setting device commonly used in Embodiments 1 and 2 of the present invention is applied.

FIG. 2 is a diagram illustrating an example of an operation panel of an electronic musical instrument commonly used in Embodiments 1 and 2 of the present invention.

FIG. 3 is a flowchart (main routine) showing an operation common to the first and second embodiments of the present invention.

FIG. 4 is a flowchart (switch event processing routine) illustrating an operation of an embodiment common to the first and second embodiments of the present invention.

FIG. 5 is a flowchart (rhythm change processing routine) showing an operation common to the first and second embodiments of the present invention.

FIG. 6 is a flowchart (volume change processing routine) illustrating an operation of the first embodiment of the present invention.

FIG. 7 is a flowchart (rhythm start processing routine) showing an operation of the first embodiment of the present invention.

FIG. 8 is a flowchart (rhythm playing processing routine) showing an operation common to the first and second embodiments of the present invention.

FIG. 9 is a flowchart (volume change processing routine) showing an operation of the second embodiment of the present invention.

FIG. 10 is a flowchart (rhythm start processing routine) showing an operation of the second embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 CPU 11 Program memory 12 RAM 13 Panel interface circuit 14 Operation panel 15 Keyboard interface circuit 16 Keyboard device 17 Rhythm performance data memory 18 Waveform memory 19 Sound source 20 D / A converter 21 Amplifier 22 Speaker 30 System bus 140 Rhythm start switch 141 Rhythm Selection switch 142 Volume switch 142A Volume up switch 142B Volume down switch 143 Display

Claims (1)

(57) [Claims] 1. One rhythm is selected from a plurality of rhythms.
Rhythm selection means to select, an up switch for increasing the volume of the rhythm performance, a down switch for decreasing the volume of the rhythm performance, and simultaneously pressing the up switch and the down switch.
That the volume of the rhythm performance should be fixed in response to
Fixed instruction means for instructingVolume holding means for holding the current volume of the rhythm performance,  When one rhythm is selected by the selection means, the fixed
If no instruction has been given by the
Preset volume for a preset rhythmThe above
The volume stored in the volume holding means and the stored volumeRhythm performance
And the instruction by the fixing instruction means is given.
IfWhen one rhythm is selected,
Held in columnsPerform a rhythm performance at the volume
After one rhythm is selected by the selection means,
Switch and at least one of the down switches are operated
If so, regardless of the presence or absence of the instruction by the fixed instruction means
WithoutIs held by the volume holding means in response to the operation.
Change the volume and the changedLet the rhythm play at the volume
A sound volume setting device, comprising: