JP3282675B2 - Electronic musical instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic accompaniment (including an automatic rhythm) for repeatedly reading out performance data of a predetermined time length stored in a memory to obtain a performance sound, or performance data of an arbitrary time length stored in a memory. More specifically, the present invention relates to an electronic musical instrument that performs an automatic performance to obtain a performance sound by reading the same, and particularly to an electronic musical instrument that can always set a desired panning even in an automatic accompaniment or an automatic performance.

[0002]

2. Description of the Related Art Conventionally, in an electronic musical instrument, processing (so-called panning) of distributing a tone signal generated in monaural to right and left tone signals at a predetermined ratio has been performed. By performing panning, the musical sound generated in monaural is generated at a predetermined position in stereo,
It is possible to set the position where the sound is localized. As a result, it is possible to generate a musical sound with a sense of spaciousness.

[0003] Some natural musical instruments have a sound generating mechanism arranged right and left like a piano. In such a natural musical instrument, the position at which a musical tone is generated changes according to the pitch of the musical tone. For example, at the position of a piano player, low pitched sounds are heard from the left, and high pitched sounds are heard from the right. Also in electronic musical instruments, so-called key-scale panning in which panning is changed in accordance with the pitch of a musical tone to be played is realized in order to realize such properties of a natural musical instrument.

On the other hand, panning is also performed in automatic performance and automatic accompaniment. For example, there is an electronic musical instrument that stores panning data in a header portion of pattern data for performing an automatic performance or an automatic accompaniment, and performs panning according to the panning data when performing an automatic performance or an automatic accompaniment. In some cases, panning is performed in accordance with default panning data defined according to a selected tone color or the like.

Further, among electronic musical instruments, a so-called digital sequencer or the like has a MIDI (Musical instrument).
ment digatal interface) Standard data can be stored, so control changes for panning data can also be stored. Therefore, if a control change for panning data is included in the MIDI data to be transmitted, the panning data can be changed even during operation (during playing).

[0006]

In the above-described system for performing panning in automatic performance and automatic accompaniment using the panning data stored in the header portion of the pattern data or default panning data corresponding to the tone, etc. There is a problem that panning cannot be changed during automatic accompaniment.

According to the digital sequencer,
By using the control change, the panning can be changed during the performance. However, once the panning is changed, the original panning situation cannot be easily reproduced. For example, panning can be changed by a control change while panning is being performed in accordance with the tone color. However, in order to return to the original panning after that, it is necessary to stop the operation of the electronic musical instrument and check the value of the original panning data and perform the troublesome operation of setting the checked value. No.

Further, in an electronic musical instrument in which panning is preset for a tone, a player cannot usually know what panning is preset for each tone. Therefore, such an electronic musical instrument has MIDI
When the panning is changed by sending a control change of, the panning data must be changed little by little to check on the auditory sense or to perform a reset in order to return to the original panning.

In view of the above-mentioned problems in the prior art, the present invention can easily change panning during automatic accompaniment or automatic performance, and can easily return to the original panning without stopping automatic accompaniment or automatic performance. It is an object of the present invention to provide an electronic musical instrument that can be returned to the electronic musical instrument.

[0010]

In order to achieve this object, the invention according to claim 1 stores panning data for storing performance data and for instructing to return panning to a default state or set panning to a predetermined state. the,
A storage means for storing , for each track constituting the performance data, a tone generation instruction based on the performance data read from the storage means, and reading of the panning data stored in the track. Control means for instructing that panning be returned to a default state or set to a predetermined state in accordance with the panning data, and receiving the instruction from the control means, sets panning of the track to a default state. And a panning means for returning or setting to a predetermined state. further
The invention according to claim 2 is a panning decoder in a default state.
Timbre data that contains timbre data containing data for each timbre in advance.
Data storage means and performance data
To the default state or set to the specified state
Data and sound to pronounce
The color is stored for each track constituting the performance data.
Performance data storage means, and read from the performance data storage means.
While instructing the pronunciation based on the performance data issued,
Read the panning data stored in the track
Panning according to the panning data
Revert to default state or set to desired state
Receiving the instruction from the control means.
The panning of the track to the tone of the track
Restores the default state indicated by the corresponding tone data.
Or panning means for setting to a predetermined state.
It is characterized by the following.

The panning default state and the predetermined state include a state in which a constant value is set as panning data (ie, a state in which the ratio of distributing a tone signal to the left and right is constant), as well as the above-described key scale panning. And various panning states such as changing panning with an envelope or specifying no panning.

[0012]

The panning data is stored in the storage means for storing the performance data, and when the panning data is read out, the panning state is set according to the data. Since the panning data stored together with the accompaniment data in the storage means is data indicating that the panning should be returned to the default state or set to a predetermined state, the panning data can be easily returned to the default state even after the panning is changed once.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. Here, an example in which the present invention is applied to an electronic musical instrument having an automatic accompaniment function will be described.

FIG. 1 shows a block configuration of an electronic musical instrument according to an embodiment of the present invention. The electronic musical instrument of this embodiment has a keyboard 1 having a plurality of keys, and outputs (key-on signal, key-off signal, key code as pitch information, etc.) from the keyboard 1 to a bus line 12. A keyboard interface 2 for receiving and transferring data to and from the user, a panel 3 having various switches and display devices, etc., and an output from the panel 3 to a bus line 1.
A central processing unit (CPU) 5 for controlling the overall operation of the electronic musical instrument; and a timer for interrupting the CPU 5 at predetermined time intervals. 6. A program storing a program executed by the CPU 5 and various tables and constants.
It has a do-only memory (ROM) 7 and a random access memory (RAM) 8 to which various work registers and flags are assigned. The ROM 7 stores automatic accompaniment pattern data and timbre data as described later (FIG. 5).

This electronic musical instrument also has a sound source 9 for forming a desired tone signal based on instructions from the CPU 5, and a panning circuit for distributing the tone signal input from the sound source 9 to the left and right in accordance with panning data given from the tone source 9. 10 and left and right sound systems 11L and 11R for generating musical tones based on the left and right musical signals from the panning circuit 10, respectively. Reference numeral 12 denotes a bidirectional bus line.

Next, the panning circuit 10 will be described in detail with reference to the detailed diagram of FIG. The panning circuit 10
It has two multipliers 21L and 21R. The tone signal input to the panning circuit 10 is divided into these left and right multipliers 21.
L, 21R. The multiplier 21L multiplies the input tone signal by a coefficient α and outputs the result as an L-side (left) tone signal. Similarly, the multiplier 21R multiplies the input tone signal by a coefficient β and outputs the result as an R-side (right) tone signal.
The coefficients α and β are coefficients input from the sound source 9.

FIG. 3 is a graph showing the relationship between the value of panning data and the coefficients α and β in the panning circuit. The horizontal axis represents panning data given to the sound source 9, and the vertical axis represents coefficients α and β output from the sound source 9 to the panning circuit 10 correspondingly. Panning data is CPU
5 to the sound source 9. Panning data is "0"
To "7" or an integer value of "9" to "15".

As can be seen from the graph 31L, the coefficient α
When the panning data is "0", the panning data gradually decreases from "1.0" as the panning data increases to "2" and "3", and the panning data becomes "1".
It becomes "0" when it is "5". As can be seen from the graph 31R, the coefficient β gradually increases from “0” when the panning data is “0”, and gradually increases from “0” as the panning data increases to “2” and “3”. −
When the data is "15", it becomes "1.0". These graphs are so-called sine curves.

As can be seen from the configuration of the panning circuit 10 of FIG. 2 and the graph of FIG. 3, when the panning data is "0", the level of the L side tone signal is maximum and the level of the R side tone signal is "0". Become. Panning data is "2"
As it increases to “3”, L (within a range where the level of the L-side tone signal is larger than the level of the R-side tone signal)
The level of the side tone signal gradually decreases and the level of the R side tone signal gradually increases. When the panning data is "7", the L-side tone signal and the R-side tone signal have the same level. Further, as the panning data increases to "9" and "10", the level of the L side tone signal gradually decreases (within a range where the level of the L side tone signal is smaller than the level of the R side tone signal). Then, the level of the R side tone signal gradually increases. When the panning data is "15", the level of the L side tone signal is "0" and the level of the R side tone signal is maximum. In this way, the panning circuit 10 distributes and outputs the input tone signal to two systems of the L side and the R side.

Next, the switches on the panel of the electronic musical instrument of this embodiment and their functions will be described with reference to the panel external view of FIG. 4, various switches and a display device are arranged on a panel 40 (corresponding to a part of the panel 3 in FIG. 1). Reference numeral 21 denotes ten tone selection switches, 23 denotes five style selection switches, 24
Is an LED provided near each style selection switch.

Reference numeral 25 denotes a start switch for instructing the start of the automatic accompaniment, and reference numeral 27 denotes a stop switch for instructing the end of the automatic accompaniment. Start switch 2
5 and near the stop switch 27, respectively.
EDs 26 and 28 are provided. Further, 29 and 30 are tempo setting switches for setting the tempo of the automatic accompaniment, 29 is a tempo up switch for increasing the tempo, and 30 is a tempo down switch for decreasing the tempo. A display device 31 indicates the currently set tempo by the number of quarter notes per minute.

By pressing each style selection switch 23, the style of the automatic accompaniment can be selected. For example, when the style selection switch 23-1 is pressed, the style can be selected such as 8 bits, when the style selection switch 23-2 is pressed, a style such as samba can be selected, and thereafter, the automatic accompaniment can be performed in the selected style. The LED 24 near the pressed style selection switch 23 is turned on, so that the currently selected automatic accompaniment style can be known.

When the start switch 25 is pressed, the automatic accompaniment is started in the style selected at that time. At this time, the LED 26 lights up. Pressing the stop switch 27 stops the automatic accompaniment. At this time, the LED 28 lights up.

When the tempo up switch 29 is pressed,
The tempo of the automatic accompaniment is increased according to the number of times or the pressing time. Accordingly, the numerical value displayed on the display device 31 increases. On the other hand, tempo down switch 3
When 0 is pressed, the tempo of the automatic accompaniment is reduced according to the number of times or the pressing time. Accordingly, the numerical value displayed on the display device 31 decreases.

Next, registers and tables used in the electronic musical instrument of this embodiment will be described. (A) RUN: Run flag. “1” indicates that the automatic accompaniment is being executed, and “0” indicates that the automatic accompaniment is stopped. (B) PC: an interrupt counter. This counter is incremented by "1" when the timer 6 is interrupted by the timer. The upper limit is a predetermined number F0 (a value larger than “95”). In the electronic musical instrument of this embodiment, one bar is equally divided into 96 short time sections, and at each timing there is a musical tone to be generated for automatic accompaniment. The time interval of the timer interrupt in which the interrupt counter PC counts up is set equal to the time interval of this small section.

(C) OC: an automatic accompaniment processing counter. The count is incremented by "1" at the timing when the automatic accompaniment should be sounded. This timing is equal to the timer interrupt timing as described above. However, in this embodiment, the timer interrupt is detected by comparing the value of the automatic accompaniment processing counter OC with the value of the above-mentioned interrupt counter PC. The processing procedure will be described later with reference to a flowchart. (D) TN: a timbre number register in which a timbre number specifying a timbre of a musical tone (automatic accompaniment tone) to be pronounced as an automatic accompaniment is set. The timbre number of the automatic accompaniment sound is stored in advance in the automatic accompaniment pattern data described later for each track.

(E) TMP: a tempo data register in which the currently set tempo value of the automatic accompaniment is set. (F) APAN: a pan data register in which currently set panning data (pan data) is set. As the pan data, an integer value of “0” to “15” shown on the horizontal axis of the graph of FIG. 3 is taken. "8" on the graph
However, when the pan data APAN is “8”, it indicates that panning is in a default state. In this embodiment, the default value is pan data corresponding to the currently set tone color. (G) TRP: a track pointer for sequentially reading and processing automatic accompaniment pattern data. (H) TIM: a timing data register for reading and setting timing data of the automatic accompaniment pattern data.

(I) Automatic accompaniment pattern data: FIG.
(A) shows the contents of the automatic accompaniment pattern data. Automatic accompaniment pattern data is prepared for each style,
The automatic accompaniment pattern data corresponding to the style selected by the style selection switch 23 in FIG. 4 is read out, and the automatic accompaniment is performed. The automatic accompaniment pattern data of each style is divided into four track data. Each track data represents a pattern for one bar which is generated by one tone. For example, among the four tracks of the style 2 automatic accompaniment pattern data, track 1 is assigned to a drum, track 2 is assigned to a bass, track 3 is assigned to a piano, and so on.

Each track data has a timbre number and tempo data as header data at the beginning. The timbre number is a number that specifies the timbre of a tone generated by the pattern of the track. The tempo data indicates an initial value of the tempo when the automatic accompaniment sound is generated in the pattern of the track.
Accompaniment data is arranged following the header data. The accompaniment data includes timing data indicating the timing of sound generation, note numbers indicating pitches, and velocity data indicating volume. When the velocity is a value other than "0", the accompaniment data indicates key-on, and when the velocity is "0", the accompaniment data indicates key-off.

The track data can include pan data. The pan data may be placed anywhere in the accompaniment data. The pan data is “0” to “1” as described above.
Takes an integer value of "5", an instruction of "8" indicates an instruction to return to the default, and any other value indicates an instruction to set panning to that value.

(J) Tone data: FIG. 5B schematically shows the contents of the tone data. The timbre data is prepared for each timbre. For the performer's performance, tone color data corresponding to the tone color selected by the tone color selection switch 21 in FIG. 4 is read out, and a tone is generated in the tone color. For automatic accompaniment, timbre data corresponding to the timbre number in the header of each track data is read out, and an automatic accompaniment sound is generated in the timbre. Note that the names of the above-described registers and the like represent the registers and the like and also the contents thereof. For example, the term PC indicates the interrupt counter register itself and also indicates the value (counter value) of the interrupt counter stored in this register.

Next, the operation of the electronic musical instrument of this embodiment will be described with reference to the flowcharts of FIGS.

Referring to the main routine of FIG. 6, when the operation of the electronic musical instrument starts, first, in step S1, initialization of each register and the like is performed. Next, panel processing is performed in step S2, keyboard processing is performed in step S3, automatic accompaniment processing is performed in step S4, other processing is performed in step S5, and the process returns to step S2.
Then, the processing after step S2 is repeated.

The timer interrupt routine will be described with reference to the flowchart of FIG. The timer interrupt routine is executed when the timer 6 receives a timer interrupt. The timer 6 is interrupted 96 times at equal time intervals during one bar. The time interval is set in the register TM
It is determined according to the value of P.

In the timer interrupt routine,
In step S11, it is determined whether or not the interrupt counter PC is smaller than a predetermined value F0. If smaller, step S12
To increment the interrupt counter PC by "1" and return. If the value of the interrupt counter PC is not smaller than the predetermined value F0, the process returns.

Next, a panel processing routine (step S2 in FIG. 6) will be described with reference to FIG. In the panel processing routine, first, an accompaniment pattern selection process is performed in step S21. This is a process of determining whether or not there is an ON event of the style selection switch 23 and selecting an accompaniment pattern of a style corresponding to the switch when there is an ON event. Next, in a step S22, it is determined whether or not there is an ON event of the start switch 25. If there is an ON event of the start switch 25, the process proceeds to step S23, and if not, the process proceeds to step S33.

In step S23, the run flag RUN is set to ON ("1"), and in step S24, the interrupt counter P
Initialize C and the automatic accompaniment processing counter OC. The initial values are “1” for the interrupt counter PC and “0” for the automatic accompaniment processing counter OC. Here, the interrupt counter PC is forcibly set so that the automatic accompaniment process is always performed when the automatic accompaniment starts
Is set larger than the automatic accompaniment processing counter OC.
The detection of the initial values of these counters, the timing of counting up, and the timing of automatic accompaniment will be described later in detail.

Next, the header data of the automatic accompaniment pattern data of the style selected in step S25 is read, and the tone number is set in the tone number register TN, and the tempo data is set in the tempo data register TMP.
The following description focuses on only one track, but the same processing is performed on all tracks of the pattern data of the selected style. next,
"8" is set in the pan data register APAN in step S26.
Set. This indicates that a default value is used as pan data.

Next, in step S27, "0" is set as an initial value in the track pointer TRP for reading out the automatic accompaniment pattern data, and the head data of the automatic accompaniment pattern data is read out. Then, in step S28, whether the read data is timing data or pan data,
Or other data. If it is timing data, step S29; if it is pan data, step S30; if it is other data, step S31.
, Respectively.

If the read pattern data is timing data, the timing data is set in the timing data register TIM in step S29, and the flow advances to step S33. If the read pattern data is pan data, the pan data is set in the pan data register APAN in step S30, and the process proceeds to step S32.
If the read pattern data is other data, a process for the data is performed in step S31, and the process proceeds to step S32. In step S32, the track pointer TRP is advanced by "1" to read the next pattern data, and the process returns to step S28.

In step S33, the stop switch 27
It is determined whether or not there is an ON event. If there is an ON event of the stop switch 27, it means that the automatic accompaniment is to be stopped, and the process proceeds to step S34. If not, the process proceeds to step S36. In step S34, the interrupt counter PC is set to F0, which is the upper limit, and in step S35, the run flag RUN is turned off ("0"), and
Proceed to 36. If there is no ON event of the stop switch 27 in step S33, the process proceeds to step S36.

In step S36, a tempo setting process is performed. The tempo setting process is performed by the tempo setting switches 29 and 3
This is a process of determining whether there is an ON event of 0 and setting a new tempo value in the tempo register TMP when an ON event occurs. After step S36,
To return.

Next, the automatic accompaniment process in step S4 in FIG. 6 will be described with reference to the flowchart in FIG. In the automatic accompaniment process, first, it is determined whether or not the run flag RUN is turned on in a step S41. Run flag R
When the UN is not turned on, there is no need to perform the automatic accompaniment process, and the process returns. Run flag R
If the UN is ON, it is determined in a step S42 whether or not the interrupt counter PC is larger than the automatic accompaniment processing counter OC. If the interrupt counter PC is not larger than the automatic accompaniment processing counter OC, it means that it is not the timing for performing the automatic accompaniment processing, and the process returns.

If the interrupt counter PC is larger than the automatic accompaniment processing counter OC in step S42, it means that a timer interrupt has occurred and the interrupt counter PC has counted up, and it is time to perform the automatic accompaniment processing. Therefore, the process proceeds to step S43.

In step S43, the automatic accompaniment processing counter O
It is determined whether or not C and the timing data TIM match. If they match, it means that there is an automatic accompaniment sound to be generated at the current timing, and the process proceeds to step S44 to perform a musical sound generation process for automatic accompaniment. If the counter OC does not match the timing data TIM, it means that there is no automatic accompaniment sound to be generated at the current timing, and the process branches to step S54.

In step S44, note number and velocity data are read from the pattern data currently pointed to by the track pointer TRP. Next, step S45
It is determined whether or not the read velocity is "0". If the velocity is not "0", the sounding routine (FIG. 10) is called in step S46 using the pan data APAN at that time together with the note number and velocity in step S46 in order to perform sounding processing of the automatic accompaniment sound. As a result, an automatic accompaniment sound is generated at the designated pitch (note number) and volume (velocity), and by panning according to the designated pan data.

If the velocity is "0" in step S45, it means that the automatic accompaniment sound has been silenced. Therefore, in step S47, the key-off of the channel that is producing the tone of the corresponding note number is transmitted to the sound source 9. Instruct,
Silence the sound. After steps S46 and S47, the track pointer TRP is advanced by "1" in step S48 to read the next pattern data, and the flow advances to step S49.

It is determined whether the pattern data read in step S49 is timing data, pan data, other data, or end data. Step S50 for timing data, step S51 for pan data, step S51 for other data
52, and if it is end data, the flow branches to step S53.

If the read pattern data is timing data, the timing data is set in the timing data register TIM in step S50, and the flow advances to step S54. If the read pattern data is pan data, the pan data is set in the pan data register APAN in step S51, and the process returns to step S48.
If the read pattern data is other data, a process for the data is performed in step S52, and the process returns to step S48. If the read pattern data is end data, it returns to the beginning of the pattern data again.
In step S53, the pan data APAN is set to the default value "8", the track pointer TRP is initialized to "0", and the head data of the pattern data is read out.
Return to 49.

Next, in a step S54, it is determined whether or not the automatic accompaniment processing counter OC is "95". When the counter OC is "95", it means that the current timing is at the end of the bar, so the automatic accompaniment processing counter OC and the interrupt counter PC are set to "0" in step S56, and the routine returns. If the counter OC is not "95" in step S54, the counter PC is determined in step S55.
The counter OC is counted up by "1" so that the value becomes the same as the above, and the process returns.

Next, referring to the flowchart of FIG.
The sound generation processing in step S46 in FIG. 9 will be described. In the sounding processing routine, first, a sounding channel assignment processing is performed in step S61. Next, in step S62, the timbre data (FIG. 5B) corresponding to the timbre number TN is read from the memory, and in step S63, it is determined whether or not the pan data APAN is the default instruction "8".

When the pan data APAN is "8", the pan data corresponding to the timbre may be used as it is.
In step S64, the timbre data (which already includes pan data corresponding to the timbre as shown in FIG. 5B) is transmitted to the channel assigned in step S61, and the process proceeds to step S66. Pan data AP in step S63
If AN is not "8", it means that the pan data is set to the value of the pan data. Therefore, in step S65, only the pan data of the timbre data is replaced with the pan data APAN and transmitted to the assigned channel together with the other timbre data. The process proceeds to step S66.

In step S66, a note number, velocity and key-on signal are sent to the channel, and the routine returns. Thereby, the automatic accompaniment sound is generated by the specified panning.

Next, referring to the flowchart of FIG.
A timer processing routine among the other processes in step S5 in FIG. 6 will be described. In the timer processing routine, first,
In a step S71, it is determined whether or not the value of the tempo register TMP has been changed. If it has been changed, a new tempo TMP is sent to the timer in step S72, and the routine returns. As a result, the timer 6 is set to interrupt the timer at a time interval corresponding to the value of the tempo TMP. If there is no change in the tempo TMP in step S71, the process returns.

In the electronic musical instrument of this embodiment, when the automatic accompaniment is not performed, the process immediately returns from step S41 in the automatic accompaniment processing of FIG. 9, and the automatic accompaniment processing is not performed. At this time, the timer PC is interrupted, but the counter PC is kept at the upper limit value F0.

When the start switch 25 is turned on, the run flag RUN is turned on in step S23 in FIG. 8 and automatic accompaniment starts. The timing of generating the automatic accompaniment sound is determined by the interrupt counter PC and the automatic accompaniment processing counter OC. That is, first, FIG.
In step S24, the interrupt counter PC is set to "1" and the automatic accompaniment processing counter OC is set to "0". Since the value of the interrupt counter PC is forcibly set to a value larger than the value of the automatic accompaniment processing counter OC, the process goes from step S42 to step S43 in the automatic accompaniment processing of FIG. If there is a tone, the pronunciation is executed. Then, the process proceeds from step S54 to S55, and the automatic accompaniment processing counter OC is counted up by "1". Therefore, both the interrupt counter PC and the automatic accompaniment processing counter OC become “1”.

Since both the interrupt counter PC and the automatic accompaniment processing counter OC become "1", the process returns immediately from step S42 in the subsequent automatic accompaniment processing. After a predetermined time, when a timer interrupt occurs, the interrupt counter PC is counted up by a timer interrupt routine (FIG. 7) and changes from "1" to "2". Then, the interrupt counter PC is "2" and the automatic accompaniment processing counter OC is "1".
Therefore, in the next automatic accompaniment process, the process proceeds from step S42 to step S43, and if there is an automatic accompaniment sound to be sounded (a musical tone at the second timing of a bar divided into 96), the sounding is executed. Then, the process proceeds from step S54 to S55,
The automatic accompaniment processing counter OC is counted up to "2".
Becomes

Since both the interrupt counter PC and the automatic accompaniment processing counter OC become "2", the process returns immediately from step S42 in the subsequent automatic accompaniment processing. The above process is repeated, and the timer interrupt causes the interrupt counter PC
Is increased by "1" from the automatic accompaniment processing counter OC by "1", the tone generation processing is performed and the automatic accompaniment processing counter O
C advances "1". Then, when the process proceeds from step S42 to S43 at the last timing of the bar divided into 96 equal parts, the automatic accompaniment processing counter OC is “95”, so that the process proceeds from step S54 to S55. Then, in preparation for detecting the start timing of the next bar, both the interrupt counter PC and the automatic accompaniment processing counter OC are set to “0”.

According to the above embodiment, the pan data can be included in the pattern data. When the pan data is "0" to "7" or "9" to "15", the pan data is included in the pan data. An automatic accompaniment sound is generated according to the panning according to the panning. The pan data in the pattern data is "8".
In the case of, panning is performed using pan data corresponding to the timbre as default pan data. Therefore, the panning can be easily changed during the automatic accompaniment, and the original panning can be easily restored after the change.

Although the above embodiment is an example in which the present invention is applied to an electronic musical instrument with an automatic accompaniment device, the present invention can also be applied to an automatic performance device. For example, when applied to a sequencer or the like, a code for identifying a default designation and a panning designation may be stored, read and identified, and panning may be controlled based on the designation.

In the above embodiment, the panning is performed according to the value of the panning data appearing in the pattern data. However, the panning is not performed based on the value itself, but is performed using a predetermined pan envelope. Alternatively, when these codes appear, including a code indicating an instruction to perform a scaling pan or the like, the panning state may be set according to the code.

Further, in the above-described embodiment, an example in which the panning for distributing the monaural signal to the left and right has been described. However, the distribution is not limited to the left and right, and the monaural signal may be distributed according to the speaker arrangement of the sound system.

[0063]

As described above, according to the present invention, the panning data is stored in the storage means for storing the accompaniment data for automatic accompaniment or automatic performance. When read, the panning state is set according to the data, and it can be specified to return to the default state. Therefore, panning can be easily changed during automatic accompaniment or automatic performance, and automatic accompaniment and automatic It is possible to easily return to the original panning without stopping the performance.

In recent years, various types of panning have been used, such as one that moves panning with an envelope, one that changes panning depending on the pitch, and one that reproduces stereo-sampled data including the state of panning. According to the present invention, it is possible to incorporate such panning into automatic accompaniment and automatic performance, or to remove such panning.
Therefore, we take various panning positively,
You can flexibly set the panning for automatic performance and automatic accompaniment, such as removing when you think the balance of the song will be lost. Thereby, the expression by the automatic performance and the automatic accompaniment is further enriched. Further, since various types of panning suitable for the timbre can be set, style variations can be increased.

[Brief description of the drawings]

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

FIG. 2 is a detailed configuration diagram of a panning circuit.

FIG. 3 is a diagram showing the relationship between panning data and coefficients α and β of a panning circuit.

FIG. 4 is an external view of a panel of the electronic musical instrument of this embodiment.

FIG. 5 is a detailed diagram of automatic accompaniment pattern data and timbre data.

FIG. 6 is a flowchart of a main routine.

FIG. 7 is a flowchart of a timer interrupt routine.

FIG. 8 is a flowchart of a panel processing routine.

FIG. 9 is a flowchart of an automatic accompaniment processing routine.

FIG. 10 is a flowchart of a sound processing routine;

FIG. 11 is a flowchart of a timer processing routine.

[Explanation of symbols]

1 ... keyboard, 2 ... keyboard interface, 3 ... panel, 4
... panel interface, 5 ... central processing unit (CP
U), 6: timer, 7: read-only memory (RO)
M), 8 random access memory (RAM), 9 sound source, 10 panning circuit, 11L, 11R sound system, 12 bus line.

Claims (2)

(57) [Claims] 1. A stores the performance data, the panning data for instructing to set or predetermined state back to the default state panning, the performance data
Storage means for storing , for each of the tracks constituting, a sound generation instruction based on the performance data read from the storage means, and when the panning data stored in the track is read, panning is performed according to the panning data. Control means for instructing a return to a default state or setting to a predetermined state; and receiving an instruction from the control means, returning the panning of the track to a default state or setting to a predetermined state. An electronic musical instrument comprising panning means. 2. Includes panning data in a default state
Tone data storage means in which tone data is stored in advance for each tone
The performance data and panning
To return to the default state or set to the specified state
The panning data to be played and the tone
Performance data records to be stored for each track making up the data
Storage means and performance data read from the performance data storage means.
And instruct the user to pronounce
When the panning data is read, the panning data
Return the panning to the default state according to the
Control means for instructing setting to a predetermined state, and panning of the track in response to an instruction from the control means.
Tone data corresponding to the tone of the track
Return to the default state shown in
Electronic music having panning means
vessel.