JP2768348B2 - Automatic performance device - 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 performance device used in an electronic musical instrument and the like, and more particularly to a device for performing an automatic performance according to a desired automatic performance pattern such as an automatic rhythm performance and an automatic bass / chord accompaniment. More specifically, the present invention relates to a technique for automatically selecting a gradual automatic performance pattern such as fill-in, intro, and ending.

[0002]

2. Description of the Related Art A conventional example of automatic rhythm performance in an electronic musical instrument will be described. A plurality of rhythm patterns are prepared for a common rhythm name, and a desired rhythm pattern can be selected from the plurality of rhythm patterns. It is normal that there is. For example, in the case of bossa nova, a normal pattern and a variation pattern are prepared for the rhythm name bossa nova, and either one can be selected. Further, the number of variation patterns is not limited to one, but may be plural. Generally, a pattern has a length of several measures, and by repeating this, a continuous automatic rhythm performance is performed.

As described above, the main performance pattern repeats the same pattern, so that the performance tends to be monotonous. Therefore, a sub-pattern called fill-in, break, ad-lib, or the like is prepared, and a performance according to the sub-pattern is temporarily inserted in response to an instruction by an artificial switch operation or the like, and thereafter, the process shifts to a main pattern. It has been done so. In that case,
Indicate which main pattern to shift to after inserting a sub-pattern such as fill-in, that is, indicate the destination main pattern, and the type of sub-pattern to be inserted is the specified destination main pattern It was decided uniquely.

For example, when the main performance pattern is of two types, a normal pattern and a variation pattern, the fill-in instruction switch is set to "fill-in-to-normal" (to be shifted to the normal pattern after performing fill-in) and "fill-in-to-normal". to-variation "
(It is necessary to shift to the variation pattern after performing the fill-in), and only two types of the fill-in patterns are provided corresponding to the two patterns. Therefore, when "Fill-in-Normal" is instructed, a pattern exclusive to "Fill-in-to-Normal" is followed regardless of whether the pattern played immediately before is a normal or a variation. Fill-in automatic performance is performed. Also, when "Fill-in-to-variation" is instructed, regardless of whether the pattern played immediately before is a normal or a variation, the pattern follows a fill-in pattern dedicated to "Fill-in-to-variation". Fill-in automatic performance is performed.

In order to incorporate the feeling of live performance into the automatic performance, an intro performance pattern and an ending performance pattern are prepared separately from the main performance pattern, and when the performance starts, the intro performance pattern is prepared. Insertion is performed, and at the end of the performance, an ending performance pattern is inserted. In such a case, conventionally, a performance according to a predetermined intro pattern is inserted in response to an intro instruction operation, and a performance according to a predetermined ending pattern is inserted in response to an ending instruction operation.

[0006]

As described above, in the conventional intro pattern, since a predetermined intro pattern is uniquely selected in response to an intro instruction operation, the intro performance tends to be monotonous. . Similarly, in a conventional ending pattern, a predetermined ending pattern is uniquely selected in response to an ending instruction operation, so that the ending performance tends to be monotonous.

[0007] In addition, while a transitional performance such as a fill-in is being performed, an operation for instructing another transitional performance such as a fill-in may be performed. Lack of countermeasures for the situation could not perform any convenient processing. The various problems described above occur not only in automatic rhythm performance but also in automatic bass chord accompaniment and other automatic performances.

[0008] The present invention has been made in view of the above, in the middle of performing a transitional playing fill-like,
It is an object of the present invention to provide an automatic performance device that performs an inconvenient process when an operation for instructing a gradual performance such as another fill-in is performed.

[0009]

[0010]

[0012]

[0013]

[0014]

According to the present invention, there is provided an automatic performance device which stores a plurality of main patterns for each of a plurality of selectable rhythms and a plurality of sub-patterns, and a desired rhythm. Rhythm selecting means for selecting a main pattern, a main pattern selecting means for selecting a desired main pattern, and a main selected by the main pattern selecting means among the plurality of main patterns corresponding to the rhythm selected by the rhythm selecting means. First control means for reading a pattern from the storage means and performing an automatic performance according to the pattern; and temporarily inserting a performance according to a desired sub-pattern during the automatic performance and thereafter shifting to a performance according to a desired main pattern. Instruction means for instructing the first sub-pattern
And then follow the first main pattern
First instruction means for instructing a transition to a performance,
Follow a second sub-pattern different from the first sub-pattern
Insert a performance and then differ from the first main pattern.
Transition to a performance that follows the second main pattern
A second instruction means for instructing; and the instruction means.
In response to an instruction from any of the above,
A second control for reading out the main pattern corresponding to the instruction from the storage means and reading out the main pattern corresponding to the instruction from the storage means and performing an automatic performance according to the pattern. Means and instructions
If another instruction means is instructed during the automatic performance according to the sub-pattern according to any of the instructions of the means, the sub-pattern being played is not changed, and the main pattern to be played thereafter is changed. And third control means for controlling the second control means so as to change to a main pattern corresponding to the another instruction means .

According to the automatic performance device according to the present invention,
In the first instruction means and the second instruction means, the sub-pattern
The main pattern that shifts after that is different
Depending on which instruction means is instructed.
Performance of the corresponding sub-pattern and the subsequent main pattern
In the second control means so that the transition to the
Controlled in principle. On the other hand, any of the instruction means
During the performance of the sub-pattern according to the
If indicated, the third control means controls the second
The principle control by the control means is changed. Ie after
Depending on the instruction means specified by the
Of the main pattern that does not change
Only changed to the one corresponding to the instruction means specified later
Is done. For example, in accordance with an instruction of the first instruction means, in the middle of performing a transitional playing according desired first sub-pattern in order to shift to the desired first main pattern after, the
If the second instruction means inserts a performance according to another second sub-pattern and shifts to a performance according to another second main pattern, the first sub-pattern currently being played is changed. Instead, only the process of changing the main pattern to be played to the second main pattern is performed. Therefore, by the selective instruction of a plurality of instruction means,
Depending on the main pattern from the transitional performance such as fill-in
The control to shift to the main performance can be freely selected in various forms.
On the other hand, if an operation to instruct a transitional performance such as another fill-in is performed while performing a transitional performance such as fill-in, the fill-in pattern is changed.
The main pattern that shifts after that can be given priority over the main pattern that moves afterwards , so that reasonable processing can be performed. It can be carried out.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. First, referring to FIG. 1, an example of a flow of a change of a performance pattern according to the present invention in a case where two main patterns are a normal pattern and a variation pattern will be schematically described. FIG. 1 is a diagram schematically showing a flow of a pattern change in an automatic performance.

First, a normal pattern or a variation pattern is selected by selecting a main pattern. If no intro instruction is given, automatic performance is started according to the selected pattern (reference numeral 1).
Or route 2). If an intro instruction is given,
Depending on which main pattern is selected,
One of two different intro patterns (that is, a normal intro pattern and a variation intro pattern) is automatically selected, and then the process shifts to the main pattern. If the selected main pattern is a normal pattern, the automatic performance is started in accordance with the normal intro pattern, and then the normal pattern is transferred (route 3). On the other hand, if the selected main pattern is a variation pattern, the variation intro pattern is used. After the automatic performance is started in accordance with (1), a transition is made to a variation pattern (route 4).

As sub-patterns for fill-in performance, there are four different patterns, namely, "N → N fill-in pattern", "V → N fill-in pattern", and "N → V".
Fill-in pattern "," V → V fill-in pattern "
Is prepared. Note that "N" stands for normal,
It should be understood that “V” indicates an abbreviation for variation and “→” indicates a transition direction. For example, “N → V fill-in pattern” indicates that the main pattern before the fill-in is a normal pattern and the main pattern after the fill-in is a variation pattern.

During the automatic performance, when a "fill-in-to-normal" instruction is issued for instructing a transition to a normal pattern after performing a fill-in performance, the pattern played immediately before this instruction is replaced with the normal pattern. If it is a pattern, “N → N fill-in pattern” is automatically selected, and after performing a fill-in performance according to this pattern,
The process shifts to a normal pattern (routes 5a and 5b). On the other hand, if the pattern played immediately before this instruction is a variation pattern, the “V → N fill-in pattern” is automatically selected, and after performing a fill-in performance according to this pattern, the process shifts to a normal pattern (reference numeral). 6a, 6b).

When a "fill-in-variation" instruction is issued to instruct to shift to a variation pattern after performing a fill-in performance, if the pattern played immediately before this instruction is a normal pattern, “N → V fill-in pattern” is automatically selected, and after performing fill-in performance according to this pattern,
The process shifts to a variation pattern (routes 7a and 7b). On the other hand, if the pattern played immediately before this instruction is a variation pattern, a “V → V fill-in pattern” is automatically selected, and after performing a fill-in performance according to this pattern, the process shifts to a variation pattern (reference numeral). 8a, 8b).

When an ending instruction is given, one of two different ending patterns (ie, a normal ending pattern and a variation ending pattern) is selected depending on which main pattern was played immediately before this instruction. After the performance is automatically selected and an automatic performance according to the ending pattern is performed, the performance ends. If the immediately preceding main pattern is a normal pattern, the ending performance is performed in accordance with the normal ending pattern (route 9).
If the immediately preceding main pattern is a variation pattern, ending is performed according to the variation ending pattern (route 10).

Next, an embodiment of an electronic musical instrument to which the automatic performance device according to the present invention is applied will be specifically described. FIG.
1 is a block diagram showing a hardware configuration of an embodiment of an electronic musical instrument to which an automatic performance device according to the present invention is applied. In this example, a central processing unit (CPU) 11, a ROM 12,
Various processes are executed under the control of the microcomputer including the AM 13. The ROM 12 includes a program memory and various data memories, and various automatic performance pattern memories such as a rhythm pattern memory and an automatic bass / chord pattern memory are also included in the ROM 12. RA
M13 functions as data and working memory, and a part of various automatic performance patterns is stored in the RAM1.
3 may be stored.

The keyboard 14 has a plurality of keys for designating the pitch of a musical tone to be generated, and includes a key switch corresponding to each key. The key press detection circuit 15 detects a key press and a key release of each key on the keyboard 14, is connected to the microcomputer, and supplies key press information and key release information to the microcomputer.

The operation panel 16 includes various controls for selecting, setting, and controlling the timbre, volume, pitch, effect, and the like of a musical tone, a selection switch group for automatic performance, a control switch group, and the like. Further, it has a display corresponding to each switch, operation element and function. As an example, an automatic rhythm selection switch group 16 for selecting various rhythms is shown.
A, Control switch group 16 for controlling automatic rhythm
B, an automatic bass chord selection switch group 16C for selecting an automatic bass chord performance.

As an example of the control switch group 16B, a start / stop switch S1 for controlling start / stop of an automatic rhythm, a switch S2 for giving an intro instruction or an ending instruction, selection of a normal pattern or "fill-in-to- A switch S3 for performing a "normal" instruction and a switch S4 for selecting a variation pattern or performing a "fill-in-variation" instruction are provided. In this embodiment, each of these switches S1 to S4 is also used for two control functions. Two control functions are performed depending on whether or not a rhythm RUN state (a state in which an automatic rhythm is started). One of them becomes effective. In a state where the rhythm is not in rhythm (a state in which the automatic rhythm is stopped), the switch S1 functions as a rhythm start switch, the switch S2 functions as an intro instruction switch, and the switch S
The switch 3 functions as a switch for selecting a normal pattern, and the switch S4 functions as a switch for selecting a variation pattern. In a rhythm RUN state (a state in which the automatic rhythm is started), the switch S1 functions as a rhythm stop switch, the switch S2 functions as an ending instruction switch, and the switch S3 performs a "fill-in-to-normal" instruction. The switch S4 functions as a “fill-in-to-
-Function as a switch for giving a "variation" instruction.

The panel switch detection circuit 17 detects the operation state and on / off state of various operators and switches on the operation panel 16 and is connected to the microcomputer and operates information and on / off information. To the microcomputer. The display control circuit 18 controls the display operation of various displays on the operation panel 16 and is connected to the microcomputer.

The tone generator 19 has a tone generator and a rhythm tone generator, and can generate musical tone signals of the scale and the rhythm in a plurality of channels. Any unknown sound source circuit may be used. Information (including setting information such as pitch, timbre, volume, and the like) indicating a scale sound or a rhythm sound to be generated in each channel or rhythm sound source is provided from the microcomputer to the sound source circuit 19, and based on the information, the scale sound or Generates a rhythm tone signal. In addition, automatic base
The chord tone is generated as a musical tone signal of a scale tone, as is well known. The tone signal generated from the tone generator 19 is supplied to the sound system 20 and is emitted as an audible sound signal.

The timer 21 forms a predetermined tempo clock signal in accordance with a variably set performance tempo, and this tempo clock signal becomes an interrupt signal to the CPU 11. As an example, the tempo clock signal, that is, the interrupt timing, is generated at each tempo timing obtained by dividing one bar into 96. That is, in the case of a quarter time signature, 24 interrupt timings (24 tempo clocks) correspond to the note length of a quarter note.

An embodiment in which the present invention is applied to an automatic rhythm performance in an electronic musical instrument having the configuration shown in FIG. 2 will be described below. First, a storage example of the rhythm pattern memory included in the ROM 12 will be described with reference to FIG. The memory format shown in FIG.
6A corresponds to one rhythm name that can be selected. Therefore, it may be understood that a rhythm pattern data group having a format as shown in FIG. 3 is prepared for each rhythm name selectable by the automatic rhythm selection switch group 16A. In the rhythm pattern memory, 1
A plurality of rhythm performance patterns are stored corresponding to one rhythm name. The types of these rhythm playing patterns are
It is the same as that shown in FIG. 1, that is, two types of main patterns (normal pattern and variation pattern), two types of intro pattern (normal type and variation intro pattern), and four types of fill-in pattern (N → N) Fill-in pattern, V
→ N fill-in pattern, N → V fill-in pattern,
V → V fill-in pattern) and two types of ending patterns (normal ending pattern and variation ending pattern). A header section precedes the storage area of each rhythm performance pattern, in which data indicating the head address of the storage area of each pattern, various setting data common to the rhythm name, and the like are stored.

As an example of storage of individual patterns, the order of addresses corresponds to the order of performance, and timing data and event data are stored at sequential addresses according to the order of performance. Timing data is stored prior to the event data, and the timing data indicates the timing at which the event should occur. In this example, the timing data indicates the timing at which an event should be generated by the number of tempo clocks (the number of interrupt timings) from the start of one bar to the occurrence of the event. In this example, the event data is composed of note-on event data (various data necessary to instruct generation of one musical tone). More specifically, the note-on event data includes a note number, velocity data, gate time data, and the like. In the case of a rhythm sound, the note number indicates the type of percussion sound to be generated, and may include data specifying the pitch of the percussion sound. The velocity data is data for instructing the intensity (volume) of the sound related to the event. The gate time data is data indicating a key-on time length of a sound related to the event. The last event data of the pattern includes a predetermined pattern end code.

Next, an example of processing executed by the microcomputer will be described with reference to flowcharts, mainly for processing of automatic rhythm performance. According to these flowcharts, the pattern change shown in FIG. 1 can be generally realized. -Description of Main Routine- FIG. 4 shows an example of the main routine. After performing a predetermined initialization process (Step 30), a panel switch process (Step 31), an automatic rhythm process (Step 32), and other processes are performed. (Step 33) is repeatedly executed. In the panel switch process (step 31), various controls and switches on the operation panel 16 are scanned to detect on / off thereof, and various processes are performed based on the detection. FIG. 5 to FIG. 5 to FIG. 5 to FIG. 5 to FIG. 5 to FIG. FIG. 5 to 8 show the same connection symbols A, B,
A series of processes connected to each other at point C is shown. In the automatic rhythm processing (step 32), processing for executing an automatic rhythm performance in response to the interruption of the tempo clock signal is performed. One example is shown in FIGS. In other processes (step 33), various other processes, such as a process for responding to key press detection and key release detection, are executed.

-Description of Interrupt Processing- When a tempo clock signal is generated from the timer 21 in the course of executing the main routine and an interrupt is issued to the CPU 11, a timer interrupt processing shown in FIG. 12 is performed. In this timer interrupt processing, RU
N flag (set to "1" when in automatic rhythm RUN state, reset to "0" otherwise)
Is checked (step 34). If YES, the value of the tempo clock register TC is increased by 1 (step 35), and the process ends. If step 34 is NO, that is, if it is not the rhythm RUN state, the process is immediately terminated. The tempo clock register TC indicates the number of unprocessed tempo clock interrupts. That is, in the actual interrupt processing, only the register TC is increased,
The interruption processing is simplified, and the substantial automatic rhythm performance execution processing responding to the interruption signal is performed in the automatic rhythm processing (step 32) in the main routine.
The burden on the user is reduced. Therefore, as will become clear later, in the automatic rhythm processing (step 32), substantial automatic rhythm performance execution processing is performed according to the value of the tempo clock register TC.

-Rhythm Selection- When an operation for selecting a desired rhythm name is performed by the automatic rhythm selection switch group 16A, at step 40 in FIG.
The rhythm style number corresponding to the selected rhythm name is stored in the rhythm style register STYL. As described later, a rhythm pattern data group in the ROM 12 corresponding to one rhythm name is selected according to the rhythm style number stored in the rhythm style register STYL.

-Selection of Main Pattern- As described above, by turning on the switch S3 or S4 of the control switch group 16B while the automatic rhythm is not RUN, a normal pattern or a variation pattern can be selected. . First, a case where the switch S3 is turned on and a normal pattern is selected will be described. In FIG. 5, after the process of step 40, the process goes to step 41 to check whether the switch S1, that is, the rhythm start / stop switch is on. In this case, the answer is NO, and the process goes to step 42 in FIG. In step 42, it is checked whether the switch S2, that is, the intro / ending instruction switch is on. In this case, the answer is NO, and the process goes to step 43 in FIG. In step 43, it is checked whether or not the switch S3, that is, a switch for selecting a normal pattern or performing a "fill-in-to-normal" instruction is on.
In this case, since the switch S3 is on, YES is determined, and the process proceeds to step 44. In step 44, R
Check whether the UN flag is "1". In this case, the determination is NO because the automatic rhythm is not in the RUN state. This means that the switch S3 functions as a normal pattern selection switch. If step 44 is NO, the process goes to step 45 and the normal pattern flag N
Set ORM to "1". Thereafter, the process goes to step 46 in FIG. 8 to check whether the switch S4 is on. In this case, since it is NO, the process goes to the next step 47, performs other processes, and returns. Thus, when the normal pattern is selected, the normal pattern flag NORM is set to "1". In addition, as described later, during the automatic performance, the “fill-in-normal”
The normal pattern flag NORM is also set to "1" when an instruction is given and the mode shifts to the normal pattern after the fill-in performance.

Next, a case where the variation pattern is selected by turning on the switch S4 will be described. In that case, NO in step 41, NO in step 42,
The process proceeds to step 46 in FIG. 8 via NO in step 43. In step 46, it is checked whether or not the switch S4, that is, a switch for selecting a variation pattern or giving a "fill-in-to-variation" instruction is on.
In this case, since the switch S4 is on, the determination is YES, and the process goes to step S48. In step 48, R
Check whether the UN flag is "1". In this case, the determination is NO because the automatic rhythm is not in the RUN state. This means that the switch S4 functions as a variation pattern selection switch. If step 48 is NO, the process goes to step 49 to reset the normal pattern flag NORM to "0". Thereafter, the process proceeds to step 47, performs other processes, and returns. Thus, when the variation pattern is selected, the normal pattern flag NORM is reset to “0”. As will be described later, the normal pattern flag NORM is reset to "0" also when the "fill-in-to-variation" instruction is given during the automatic performance and the mode shifts to the variation pattern after the fill-in performance.

-Automatic selection of intro pattern- In a state where the automatic rhythm is not RUN, the intro performance can be instructed by turning on the switch S2 of the control switch group 16B. First, in FIG. 5, the aforementioned step 41 is NO, and the process goes to step 42 in FIG. In this case, since the switch S2 is turned on, step 42 is YES, and the process goes to step 50.
In step 50, it is checked whether the RUN flag is "1".
In this case, the determination is NO because the automatic rhythm is not in the RUN state. This means that the switch S2 functions as an intro instruction switch. If step 50 is NO, the process goes to step 51 and sets the intro flag INTRO to "1". Thereafter, the process proceeds to step 43 in FIG. 7, and returns from NO in step 43 to NO in step 46 in FIG. Thus,
When an intro performance instruction is given, an intro flag INTRO is set to "1".

To start playing, the control switch group 1
The switch S1 of 6B is turned on. In response, in step 41 of FIG. 5, it is determined that the switch S1 is ON, and the process then proceeds to step 52. In step 52, the RUN flag is inverted. In this case, since the RUN flag was "0" until then, it changes to "1" by inversion. That is, the switch S1 functions as a rhythm start switch. In the next step 53, it is checked whether the RUN flag is "1". In this case, the answer is YES, and the procedure goes to step 54. In step 54, the rhythm style register STY
The rhythm pattern data group in the ROM 12 corresponding to the selected rhythm is selected according to the rhythm style number of L, and various data stored in the header portion of the rhythm pattern data group are read out. Perform the setting process.

Next, at step 55, the intro flag I
Check if NTRO is "1". In this case, since the intro flag INTRO is set to "1", YE
S, so go to step 56. In step 56, it is checked whether the normal pattern flag NORM is "1". If the normal pattern is selected as the main pattern, this flag NORM is "1", and
It is determined YES at 6 and the routine goes to step 57. In step 57, the head address of the normal intro pattern in the rhythm pattern data group of the ROM 12 corresponding to the selected rhythm is designated. As a result, the reading of the normal intro pattern from the rhythm pattern memory is started. Thus, the normal intro pattern is automatically selected. The processing of this part corresponds to the processing indicated by the route 3 in FIG. Next Step 5
In step 8, the timing data is read from the specified head address and set in the time interval register TINT. In the next step 59, the tempo clock register TC is reset to the initial value 0. Thus, the register TC is reset at the start of the automatic performance. After step 59, the process goes to step 42 in FIG. 6, and finally returns via step 47 in FIG. Note that the subsequent address increment is performed in the automatic rhythm processing of FIG. 9 as described later.

Returning to step 56 of FIG. 5, the case where the variation pattern is selected as the main pattern will be described. In this case, the flag NORM is "0", and the determination in step 56 is NO, and the process proceeds to step 60. . In step 60, the head address of the variation intro pattern in the rhythm pattern data group of the ROM 12 corresponding to the selected rhythm is designated. As a result, the reading of the variation intro pattern from the rhythm pattern memory is started. Thus, the variation intro pattern is automatically selected. The processing of this part corresponds to the processing indicated by the route 4 in FIG. Thereafter, the process proceeds to step 58, and the same processing as described above is performed.

Regarding the case where the intro is not inserted- The control switch group 16B without instructing the intro performance
Is turned on, the switch S1 of FIG.
The processing of steps 41, 52, 53, and 54 is performed, and the procedure goes to step 55. In this case, since the intro performance instruction has not been issued, the intro flag INTRO is "0", the step 55 is NO, and the procedure goes to the step 61.
In step 61, it is checked whether the normal pattern flag NORM is "1". When the normal pattern is selected as the main pattern, the flag NORM is "1", and the determination at Step 61 is YES, and the routine goes to Step 62. In step 62, the head address of the normal pattern in the rhythm pattern data group of the ROM 12 corresponding to the selected rhythm is designated. As a result, a state is reached in which reading of a normal pattern from the rhythm pattern memory is started. The processing of this part corresponds to the processing indicated by the route 1 in FIG. Thereafter, the process proceeds to step 58, and the same processing as described above is performed. On the other hand, when the variation pattern is selected as the main pattern, the flag NORM is “0”, and
Is determined to be NO, and the routine goes to step 63. Step 63
Then, the head address of the variation pattern in the rhythm pattern data group of the ROM 12 corresponding to the selected rhythm is designated. As a result, the reading of the variation pattern from the rhythm pattern memory is started. The processing of this part corresponds to the processing indicated by the route 2 in FIG. Thereafter, the process proceeds to step 58, and the same processing as described above is performed.

-Automatic Selection of Fill-In Pattern- As described above, by turning on the switch S3 or S4 of the control switch group 16B while the automatic rhythm is RUN, a "fill-in-normal" instruction or "fill-in-normal" A “-to-variation” instruction can be performed. First, a case where the switch S3 is turned on and a “fill-in-to-normal” instruction is performed will be described. When the switch S3 is turned on, step 43 in FIG.
Then, the answer is YES, and the procedure goes to the next step 44. In this case, since the automatic rhythm is in the RUN state,
The flag is “1”, and YES is determined in step 44. This means that the switch S3 functions as a "fill-in-to-normal" instruction switch. If step 44 is YES, the process proceeds to step 64 and the value of the tempo timing register TIME is set to "72".
Find out if it is smaller.

As will become clear later, the value of the tempo timing register TIME indicates the tempo timing currently being processed in the automatic performance pattern, and is the resolution of the tempo clock interrupt signal and modulo 1 bar, that is, 0 to 0. The increasing change is repeated in the range of 95. Therefore, when the value of the TIME is smaller than "72", it means that the current sound generation timing has not reached the fourth beat of one measure. That is, in the case of a quarter time signature, 0 to 23 correspond to the first beat, 24 to 47 correspond to the second beat, and 48 to 71.
Corresponds to the third beat, and 72 to 95 correspond to the fourth beat.

Eventually, at step 64, "fill-in-
When the "to-normal" instruction is given, it is checked whether or not the performance of the main pattern that has been played has not yet reached the fourth beat of the first measure. This means that if the performance of the main pattern that has been played up to that point has not yet reached the fourth beat of the first measure, a fill-in performance is inserted in the middle (in that case, the fill-in performance also starts in the middle of the measure), If the performance of the main pattern that has been played reaches beat 4 of the first measure, wait until the measure of the main pattern ends, and insert a fill-in performance from the beginning of the next measure (in that case, This is to control the fill-in performance so that it starts from the beginning of the bar. As described above, it is advantageous to perform appropriate control when a performance pattern is changed in the middle of a bar, because a natural change of the performance pattern can be realized.

If the value of the tempo timing register TIME is smaller than "72", step 64 in FIG. 7 is YES.
And goes to step 65, where the fill-in-to-normal flag FTN is set to "1". This flag F
The TN "1" indicates that the fill-in performance is to be executed immediately, and then the performance should be shifted to the performance according to the normal pattern. In this case, since the performance of the main pattern that has been played so far has not yet reached the fourth beat of the first measure, a fill-in performance is inserted in the middle (in that case, the fill-in performance also starts in the middle of the measure). Is performed in the following steps 66, 67, and 68.

In step 66, it is checked whether the normal pattern flag NORM is "1". If the pattern played immediately before the fill-in performance is a normal pattern, this flag NORM is "1", and step 67 is executed.
go to. In step 67, “N → N” in the rhythm pattern data group in the ROM 12 corresponding to the selected rhythm
Specify the start address of the “fill-in pattern”. As a result, the reading of the N → N fill-in pattern from the rhythm pattern memory is started. Thus, from the relationship between the performance patterns before and after the fill-in performance, “N → N
The “fill-in pattern” is automatically selected. The processing of this part corresponds to the processing indicated by the route indicated by reference numeral 5a in FIG.

In the next step 68, the address pointer is sequentially advanced from the head address designated in the previous step, the timing data in the fill-in pattern is sequentially read, and the value of this timing data and the current value of the tempo timing register TIME are compared. After the comparison, the address pointer is stopped at an address where the value of the timing data exceeds the value of TIME. Then, the value of the timing data is set in the time interval register TINT. The content of the time interval register TINT indicates the next tone generation timing. Therefore, T
By searching for a value of timing data that just exceeds the value of IME and setting this in the register TINT, the fill-in performance is started from the middle of the bar at a tempo timing that matches the tempo timing of the main pattern interrupted in the middle of the bar. You can get started.

On the other hand, if the pattern played immediately before the fill-in performance is a variation pattern, the flag NORM is "0".
O, go to step 69. In step 69, the head address of the “V → N fill-in pattern” in the rhythm pattern data group of the ROM 12 corresponding to the selected rhythm is specified. As a result, the reading of the V → N fill-in pattern from the rhythm pattern memory is started. Thus, the “V → N fill-in pattern” is automatically selected from the relationship between the performance patterns before and after the fill-in performance. The processing of this part corresponds to the processing indicated by the route indicated by reference numeral 6a in FIG. Thereafter, the process of step 68 is performed in the same manner as described above.

If the value of the tempo timing register TIME is equal to or greater than "72", step 64 in FIG. 7 is NO, and the process goes to step 70, where next fill-in-to-
The normal flag NFTN is set to "1". The flag NFTN “1” indicates that the fill-in performance is to be executed from the beginning of the next bar, and then the performance should be shifted to the performance according to the normal pattern. In this case, since the performance of the main pattern that has been played has reached the fourth beat of the first measure, wait until the measure of the main pattern ends, and insert the fill-in performance from the beginning of the next measure ( In this case, a process for controlling the fill-in performance to start from the beginning of the bar is performed by a bar end determination process (a detailed example of which is shown in FIG. 11) in the automatic rhythm process of FIG.

Next, the case where the switch S4 is turned on to issue a "fill-in-to-variation" instruction will be described. In response to the switch S4 being turned on, step 46 in FIG. 8 becomes YES, and the process proceeds to the next step 48. In this case, since the automatic rhythm is in the RUN state,
The UN flag is “1”, and YES is determined in the step 48. This is because the switch S4 is “fill-in to
-Variation "means functioning as an instruction switch. If step 48 is YES, the process goes to step 71 and checks whether the value of the tempo timing register TIME is smaller than "72" as in step 64 and for the same reason.

If the value of the tempo timing register TIME is smaller than "72", the processing of steps 72 to 75 similar to steps 65 to 68 of FIG. 7 is performed. Step 7
2, the fill-in-variation flag FT
V is set to "1". "1" of this flag FTV
Indicates that a fill-in performance should be performed immediately, and then the performance be changed to a variation pattern. In the next step 73, the normal pattern flag N
Check whether ORM is "1". If the pattern played immediately before the fill-in performance is a normal pattern, this flag NORM is “1”, and the routine goes to step 74. In step 74, the R corresponding to the selected rhythm
The head address of the “N → V fill-in pattern” in the rhythm pattern data group of the OM 12 is specified. As a result, the reading of the N → V fill-in pattern from the rhythm pattern memory is started. Thus, the “N → V fill-in pattern” is automatically selected from the relationship between the performance patterns before and after the fill-in performance. The processing of this portion corresponds to the processing indicated by the route indicated by reference numeral 7a in FIG. The processing in the next step 75 is the same as the step 68 in FIG.
This is the same processing as.

On the other hand, if the pattern played immediately before the fill-in performance is a variation pattern, the flag NORM is "0".
O, go to step 76. In step 76, the head address of “V → V fill-in pattern” in the rhythm pattern data group of the ROM 12 corresponding to the selected rhythm is specified. As a result, reading of the V → V fill-in pattern from the rhythm pattern memory is started. In this way, “V → V fill-in pattern” is automatically selected from the relationship between the performance patterns before and after the fill-in performance. The processing in this part corresponds to the processing indicated by the route indicated by reference numeral 8a in FIG. Thereafter, the process of step 75 is performed in the same manner as described above.

As described above, if the value of the tempo timing register TIME is "72" or more, step 71 in FIG. 8 is NO, and the process goes to step 77 to set the next fill-in-variation flag NFTV to "1".
Set to. The flag NFTV “1” indicates that the fill-in performance is to be executed from the beginning of the next bar, and then the performance should be shifted to the performance according to the variation pattern.

-Automatic Selection of Ending Pattern- As described above, an ending instruction can be issued by turning on the switch S2 of the control switch group 16B while the automatic rhythm is RUN. Switch S
In response to ON of step 2, step 42 in FIG. In this case, the RUN flag is set to “1” because the automatic rhythm is running.
, And YES is determined in step 50. this is,
This means that the switch S2 functions as an ending instruction switch. If step 50 is YES,
Go to step 78 and execute the tempo timing register TIM
It is checked whether the value of E is smaller than "48".

When the value of the tempo timing register TIME is smaller than "48", it means that the current tone generation timing has not reached the middle of one measure. Therefore, in step 78, when the ending instruction is given, it is checked whether or not the performance of the main pattern which has been played so far has reached or reached the center of one measure. This means that if the performance of the main pattern that has been played so far has not yet reached the center of one measure, the ending performance is inserted in the middle (in that case, the ending performance also starts in the middle of the measure). If the performance of the main pattern that has been played reaches the center of one measure, wait until the measure of the main pattern ends, and start the ending performance from the beginning of the next measure (in that case, the ending performance is also performed in the measure). Starting from the beginning). As described above, it is advantageous to perform appropriate control when the performance pattern is changed in the middle of a measure, because natural switching of the performance pattern can be realized. The reason why the middle position of the bar as the reference of the switching control is made different between the fill-in and the ending is to show that the reference position may be appropriately set according to the characteristic of each performance.

If the value of the tempo timing register TIME is smaller than "48", step 78 in FIG. 6 is YES.
And goes to step 79, where the ending flag EN
D is set to "1". "1" of this flag END
Indicates that the ending performance should be performed immediately. In this case, the performance of the main pattern that has been played has not yet reached the center of one measure.
A process for starting the ending performance in the middle (in that case, the ending performance also starts in the middle of the bar) is performed in the subsequent steps 80, 81, and 82.

In step 80, it is checked whether the normal pattern flag NORM is "1". If the pattern played immediately before the ending instruction is a normal pattern, this flag NORM is "1", and
go to. In step 81, the head address of the normal ending pattern in the rhythm pattern data group of the ROM 12 corresponding to the selected rhythm is designated. As a result, the normal ending pattern is read from the rhythm pattern memory. Thus, the normal ending pattern is automatically selected according to the performance pattern immediately before the ending instruction. The processing of this part corresponds to the processing indicated by the route 9 in FIG. The processing in the next step 82 is the same as the processing in step 68 in FIG.

On the other hand, if the pattern played immediately before the ending instruction is a variation pattern, since the flag NORM is "0", step 80 is NO, and the routine goes to step 83. In step 83,
The head address of the variation ending pattern in the rhythm pattern data group of the ROM 12 corresponding to the selected rhythm is designated. Thus, the reading of the variation ending pattern from the rhythm pattern memory is started. Thus, the variation ending pattern is automatically selected according to the performance pattern immediately before the ending instruction. The processing in this portion corresponds to the processing indicated by the route indicated by reference numeral 10 in FIG. After that, the process of step 82 is performed as described above.

If the value of the tempo timing register TIME is equal to or greater than "48", step 78 in FIG. 6 is NO, and the process goes to step 84 where the next ending flag NEND is set to "1". The flag NEND “1” indicates that the ending performance should be started from the beginning of the next bar.

-Automatic Rhythm Sounding Processing- In the automatic rhythm processing shown in FIG. 9, first, it is checked whether the RUN flag is "1" (step 85). If NO, return immediately, but if YES, step 86
To check whether the value of the tempo clock register TC is 1 or more. As described above, the value of TC indicates the number of unprocessed interrupt clocks. For example, if an interrupt clock signal is generated, the value of TC becomes 1 by the processing of FIG. 12, and then the automatic rhythm processing starts,
Step 86 is YES, and the processes of steps 87 to 95 are performed. In step 87, the value of TC is decreased by one. That is, when the processes of steps 87 to 95 are performed once, the value of TC is reduced by one. This means that the processing of steps 87 to 95 is performed once in response to one generation of the interrupt clock signal. For example, if two interrupt clocks are generated before the other processing in the main routine takes time and the automatic rhythm processing shown in FIG. 9 is started, the value of TC is 2, and step 87 ~ 95
Is performed once, the value of TC is 1, and the processes of steps 87 to 94 are performed once again. In this way, the processing of steps 87 to 95 can be reliably executed for the number of interrupt clocks.

At step 88, the value of the tempo timing register TIME and the time interval register TIN
The values of T are compared to see if they match. As described above, the value of the tempo timing register TIME indicates the tempo timing currently being processed among the tempo timings obtained by dividing one bar into 96. The time interval register TINT contains one of the sounds to be sounded next.
Timing data indicating the tempo timing in the bar is stored. Therefore, when the tempo timing of the sound to be sounded next arrives, TIME = TINT, and
Step 88 becomes YES. If the tempo timing of the sound to be generated next has not arrived yet, step 88
Is NO, and go to step 92.

In step 92, it is checked whether the value of the tempo timing register TIME is the maximum value 95, that is, whether the tempo timing currently being processed is at the end of one bar. If NO, go to step 93, increase the value of TIME by 1, and return. In this way, the processing from step 87 in FIG. 9 is executed in response to the generation of the interrupt clock signal, and the value of TIME is increased by one.

When the tempo timing of the sound to be generated next arrives, TIME = TINT, step 88 becomes YES, and the routine goes to step 89. In step 89, the read address pointer of the pattern data memory is incremented. By the address increment, the next address of the timing data, that is, the address storing the event data is designated in the pattern data memory (see FIG. 3). In the next step 90, the event data is read from the designated address, sent to the tone generator 19, and a rhythm sound signal corresponding to the event data is generated. In the next step 91, a pattern end determination process as shown in FIG. 10 is performed.

In this pattern end determination processing, it is checked in step 96 whether the address currently pointed to by the address pointer is the last address of the pattern. If NO, go to step 97 and increment the address pointer. By the address increment, the next address of the event data, that is, the address storing the timing data is designated in the pattern data memory (see FIG. 3). In the next step 98, the timing data is read from the specified address, set in the time interval register TINT, and then the pattern end determination processing ends.

Referring back to FIG. 9, after the pattern end determination processing in step 91, the flow proceeds to step 92, where TIME = 95.
Find out if If NO, the process proceeds to step 93 as described above, and TIME is incremented by one. When one sound is generated according to the pattern, the timing data of the sound to be generated next is set in the time interval register TINT, and the comparison is performed in step 88 as described above. Thus, automatic rhythm sounds are sequentially generated according to the selected or instructed pattern.

At the last tempo timing of one bar, step 92 becomes YES, and the routine goes to step 94. In step 94, a bar end determination process as shown in FIG. 11 is performed. In the measure end determination processing, processing for changing the pattern is performed at the start of the next measure. First, in steps 99, 100, and 101, a next fill-in-to-normal flag NFTN, a next fill-in-to-variation flag NFTV,
It is checked whether the next end flag NEND is "1". If these flags are all "0", the bar end determination processing is immediately terminated. Upon completion of the bar end determination process, the process goes from step 94 to step 95 in FIG. 9, sets the value of the tempo timing register TIME to the initial value 0, and returns.

Automatic selection of fill-in pattern (No. 2) Next fill-in-normal flag NFTN is "1", step 99 in FIG. 11 becomes YES,
Go to step 102. In this case, this means that one measure of the normal pattern or variation pattern immediately before the fill-in ends immediately, a performance according to the fill-in pattern is performed from the beginning of the next measure, and then a transition to a performance according to the normal pattern is made. In step 102, the flag NFTN is reset to "0", and the fill-in-to-normal flag FTN is set to "1".
The processing of the following steps 103, 104, and 105 is the same as the processing of steps 66, 67, and 69 in FIG. That is, according to the performance pattern immediately before the fill-in performance, “N
“→ N fill-in pattern” or “V → N fill-in pattern” is automatically selected. The processing in the next step 106 is the same as the processing in step 98 in FIG. That is, the timing data is read from the specified address and set in the time interval register TINT. After that, when this bar end judgment processing is completed,
Go to step 95 in FIG.

When the next fill-in-to-variation flag NFTV is "1", the step 1 in FIG.
00 becomes YES, and go to Step 107. In this case, it means that one measure of the normal pattern or the variation pattern immediately before the fill-in has just ended, the performance according to the fill-in pattern is performed from the beginning of the next measure, and then the performance should be shifted to the performance according to the variation pattern. In step 107, the flag NFTV is reset to "0", and the fill-in-to-variation flag FTV is set to "1". Next Step 1
The processing of 08, 109, and 110 is performed in step 73, FIG.
This is the same as the processing of 74 and 76. That is, “N → V fill-in pattern” or “V → V fill-in pattern” is automatically selected according to the performance pattern immediately before the fill-in performance. Next, the process of step 106 is performed, the bar end determination process ends, and the routine goes to step 95 of FIG.

If the next ending flag NEND is "1", the step 101 in FIG. In this case, one of the normal pattern or variation pattern immediately before the fill-in
This means that the measure should be completed and the performance according to the ending pattern should be performed from the beginning of the next measure. In step 111, the flag NEND is reset to "0", and the ending flag END is set to "1".
The processing of the following steps 112, 113, and 114 is the same as the processing of steps 80, 81, and 83 in FIG. That is, the “normal ending pattern” or the “variation ending pattern” is automatically selected according to the performance pattern immediately before the ending performance. Next, the process of step 106 is performed, the bar end determination process ends, and the routine goes to step 95 of FIG.

-Process at Pattern End- At the end of the performance pattern, YES is determined in step 96 in the pattern end determination process of FIG. 10, and the process proceeds to step 115. In step 115, the fill-in
Check whether the to-normal flag FTN is "1". If the pattern played so far is “N → N fill-in pattern” or “V → N fill-in pattern”,
This flag FTN is "1", and the routine goes to step 116. In step 116, the flag FTN is reset to "0", and the normal pattern flag NORM is set to "1". Next, in step 117, as in step 62 of FIG. 5, a process of designating the head address of the normal pattern is performed, and then the process proceeds to step 98. After the performance according to the “N → N fill-in pattern” or the “V → N fill-in pattern” is performed to the end of the pattern, the performance shifts to the performance according to the normal pattern. The processing in this portion corresponds to the processing indicated by the routes indicated by reference numerals 5b and 6b in FIG.

If step 115 is NO, step 11
Go to 8. In step 118, the intro flag INT
Check whether RO is "1". If the pattern played so far is an intro pattern, this flag INTRO
Is "1", and the routine goes to step 119. Step 11
In step 9, the flag INTRO is reset to "0". Next, at step 120, the normal pattern flag NOR
It is checked whether M is "1".
Go to 7. In this case, it means that the pattern played so far is a normal intro pattern, and after the normal intro pattern ends, the performance shifts to a performance according to the normal pattern.

On the other hand, if the normal pattern flag NORM is "0", it means that the pattern played so far is a variation intro pattern. In that case, the process goes from NO in step 120 to step 123, performs the process of designating the head address of the variation pattern, as in step 63 in FIG. Therefore, after the variation intro pattern ends, the performance shifts to the performance according to the variation pattern. The processing of this part is indicated by reference numeral 7 in FIG.
b, 8b.

If step 118 is NO, step 1
21 to check whether the fill-in-to-variation flag FTV is "1". If the pattern played so far is “N → V fill-in pattern” or “V → V fill-in pattern”, this flag FTV is “1” and the routine goes to step 122. Step 122
Then, the flag FTV is reset to “0”, and the normal pattern flag NORM is reset to “0”. next,
The process of step 123 is performed. Thus, "N → V
After the performance according to the “fill-in pattern” or the “V → V fill-in pattern” is performed to the end of the pattern, the performance is shifted to the performance according to the variation pattern.

If step 121 is NO, step 1
24, and checks whether the ending flag END is "1". If the pattern played so far is an ending pattern, this flag END is “1”,
In Step 125, the flag END is reset to "0", and the RUN flag is reset to "0". Then, return. When the RUN flag is reset to "0", the automatic performance ends.

On the other hand, if ending flag END is "0"
Is NO in step 124, and step 12
6 to check whether the normal pattern flag NORM is "1". If "1", go to step 117,
If "0", go to step 123. If no special pattern change processing or end processing is performed, the process reaches step 126, and the automatic performance according to the normal pattern or the variation pattern is repeated.

-Special processing during fill-in performance- Next, an embodiment will be described in which measures are taken when an operation for instructing another fill-in performance is performed during the fill-in performance. In this embodiment, the flow charts of FIGS. 7 and 8 in the above-described embodiment are simply changed as shown in FIGS. 13 and 14, and the other configuration may be the same as that of the above-described embodiment. 13 will be described. FIG.
Steps 127 and 128 are added between the steps 127 and 64. FIG. 14 is obtained by adding steps 129 and 130 between steps 48 and 71 in FIG.

First, referring to FIG. 13, when a performance according to the main pattern is performed, the "fill-in-
When the instruction of “to-normal” is issued, the switch S
Since the switch S3 is turned on, it is determined that the switch S3 is turned on in step 43 of FIG. Here, RUN = 1 is also determined as YES. In the example of FIG. 7, if step 44 is YES, the process immediately proceeds to step 64 to perform the “fill-in-to-normal” process. In FIG. 13, however, the process proceeds to step 127 without doing so. In step 127, it is checked whether the fill-in-variation flag FTV is set to "1". In this case, since the main pattern is being played, FTV =
Since it is "0", the result of step 127 is NO, and the process goes to step 64. Therefore, the same processing as in the case of FIG. 7 is performed.

Next, the fill-in-to-variation flag FTV is set to “1”, and the “N → V fill-in pattern” or the “V → V fill-in pattern” is set.
During the performance according to the “Fill-in-to
A description will be given of a case where the instruction of “normal” is given.
In this case, since the switch S3 is turned on, YES is determined in step 43 of FIG. 13 and YES is also determined in step 44, and the process proceeds to step 127. In this case, FTV = "1"
Therefore, YES is determined in the step 127, and the process proceeds to the step 128. In step 128, the flag FTV is reset to "0", and the fill-in-to-normal flag FTN is set to "1". Then, step 64
Jump to step 46 in FIG. Therefore, since the route does not pass through the route of step 64, the fill-in pattern of the fill-in-to-variation during the performance is not changed and is continued as it is, while the flag is switched to FTN = "1", and the subsequent performance is performed. The main pattern to be changed is changed from the variation pattern to the normal pattern.

Steps 129 and 130 added to FIG.
Is different from Steps 127 and 128 added to FIG. 13 only in that the relationship between the normal and the variation is switched, and the concept is the same. Therefore, FIG.
According to the embodiment according to FIG. 14, while performing the transitional performance (first fill-in performance) according to the sub-pattern,
Performance according to another sub-pattern (second fill-in performance)
Is inserted, and it is instructed to shift to a performance according to another main pattern, only the process of changing the main pattern to be performed thereafter is performed without changing the sub-pattern being played. Therefore, when an operation for instructing another second fill-in performance is performed while the first fill-in performance is being performed, the continuity of the fill-in during the performance can be assured, but the process is shifted thereafter. As for the main pattern, the one designated later can be given priority, and a rational process can be performed.

The concept of the special processing shown in FIGS. 13 and 14 is not limited to the automatic performance device of the type which determines the fill-in pattern in consideration of the combination of the main patterns before and after the fill-in as in the above-described embodiment. The present invention is also applicable to an automatic performance apparatus of a type in which a fill-in pattern (or a break pattern or an ad-lib pattern) is uniquely determined according to the main pattern.

-Example of application to automatic bass chord performance-The above embodiment is an example of application of the present invention to automatic rhythm performance, but a similar configuration can be applied to automatic bass chord performance. An embodiment in that case is shown in FIG.
As shown in FIG. FIG. 15 shows a modified example of the main routine, in which the automatic bass chord performance related processing executed in the other processing (step 33) in the main routine of FIG. 4 is extracted and shown. Step 331
Then, a key pressing process is performed. This is to detect key depression and key release on the keyboard 14 and perform related processing. In step 332, a process of detecting a chord (chord) from a pressed key on a predetermined keyboard (or key range) for accompaniment performance, and a process of switching a performance pattern according to the detected chord (chord) are performed. Even in the case of automatic bass chord performance, it is basically assumed that the main pattern is of two types, a normal pattern and a variation pattern. Due to the nature, a plurality of normal patterns and variation patterns are provided for each chord type (for example, three types of major, minor, and minor seventh), and which of these chord type patterns is used depending on the type of chord detected. Is switched.

At step 333, an automatic accompaniment process is performed. This automatic accompaniment processing corresponds to the automatic rhythm processing (step 32), and a detailed example thereof is shown in FIG. In step 334, the remaining other processing is performed. The control switch group 16B may share a switch for automatic rhythm and a switch for automatic bass chord performance, or may be provided separately. Also, it can be considered that the flow charts of the panel switch processing of FIGS. 5 to 8 can be used as they are as the processing for automatic bass chord performance. The format of the pattern data memory storing the pattern for playing the automatic bass chord may be considered to be the same as that of FIG. Of course, the content of the pattern data itself is completely different between the rhythm and the automatic bass chord.

In the automatic accompaniment process shown in FIG. 16, steps 185 to 195 are replaced with steps 85 to 9 in FIG.
5 may be considered as the same processing. The difference is that steps 196 and 197 are provided between steps 190 and 191. In step 190, the automatic accompaniment event data read from the pattern data memory is read. The note number in the read event data is data indicating the pitch of a sound to be generated as a bass sound or a chord sound, that is, an accompaniment sound, relative to the root note. In step 196, the relative scale data is numerically shifted according to the root name and chord type of the detected chord, and converted to absolute scale data. Step 1
At 97, the converted scale data is sent to the tone generator circuit 19, and based on this, an accompaniment sound signal such as a bass sound or a chord sound is generated. The pattern end determination processing 191 in FIG. 16 may be considered as the same processing as in FIG. 10, and the bar end determination processing 194 may be considered as the same processing as in FIG. With the above-described configuration, the control according to the present invention can be performed in an automatic accompaniment such as an automatic bass chord performance in the same pattern changing manner as described with reference to FIG.

In the above embodiment, two types of main patterns, normal and variation, are used. Further, the variation pattern may be selectable from a plurality of variation patterns. The storage format of the pattern data is not limited to the type that stores timing data and event data for each event as shown in FIG.
For example, a plurality of addresses are set corresponding to the minimum tempo clock timing, data of a sound to be generated is stored at an address corresponding to the tempo clock timing to be generated, and each address is sequentially accessed according to the tempo clock timing. The stored data may be read. In the above embodiment, the start of the automatic performance is performed in response to the operation of the start / stop switch. However, as is well known, a synchro start method in which the automatic rhythm starts in conjunction with the key depression operation or the like. Of course, there may be. In the above embodiment, the switches S1 to S4 are shared by the two functions in the control switch group 16B. However, the present invention is not limited to this. It is also possible to provide an instructing means such as a switch or a selecting means for each individual function. Of course. In the above embodiment, the processing method when the performance pattern is changed in the middle of the measure is based on the center or the fourth beat of the measure, but it is needless to say that the present invention is not limited to this.

[0084]

As described above, according to the present invention, a plurality of
Of the fill-in etc.
Control to shift from performance to main performance with main pattern
When an operation to instruct a gradual performance such as another fill-in is performed while a gradual performance such as a fill-in is being performed while being able to select freely in various forms.
Should be able to guarantee the persistence of the fill-in during the performance without changing the fill-in pattern.
As for the main pattern that shifts after that, priority is given to the one instructed later .
This makes it possible to perform an inconvenient process and enhance the automatic performance function.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing an example of a flow of a performance pattern change according to the present invention.

FIG. 2 is a hardware block diagram showing an embodiment of an electronic musical instrument to which the automatic performance device according to the present invention is applied.

FIG. 3 is a diagram showing an example of a storage format of a rhythm pattern memory.

FIG. 4 is a flowchart showing an example of a main routine executed by the microcomputer in FIG. 2;

FIG. 5 is a flowchart showing an example of a process executed in the panel switch process in FIG. 4;

FIG. 6 is a flowchart showing another example of the process executed in the panel switch process in FIG. 4 for a portion executed following the flowchart in FIG. 5;

FIG. 7 is a flowchart showing another example of the process executed in the panel switch process in FIG. 4 for a portion executed following the flowchart in FIG. 6;

8 is a flowchart showing another example of the process executed in the panel switch process in FIG. 4 for a portion executed following the flowchart in FIG. 7;

FIG. 9 is a flowchart showing a detailed example of an automatic rhythm process in FIG. 4;

FIG. 10 is a flowchart showing a detailed example of a pattern end determination process in FIG. 9;

FIG. 11 is a flowchart showing a detailed example of a bar end determination process in FIG. 9;

FIG. 12 is a flowchart showing an example of a timer interrupt process executed in response to a tempo clock signal.

FIG. 13 is a flowchart showing a modification of FIG. 7;

FIG. 14 is a flowchart showing a modification of FIG. 8;

FIG. 15 is a flow chart showing an embodiment of the present invention in automatic bass chord performance and extracting and showing automatic bass chord performance related processing in a main routine.

FIG. 16 is a flowchart showing a detailed example of an automatic accompaniment process in FIG. 15;

[Explanation of symbols]

11 central processing unit (CPU), 12 ROM, 1
3 ... RAM, 14 ... Keyboards 14, 15 ... Key press detection circuit, 1
6 ... operation panel, 16A ... automatic rhythm selection switch group,
16B: Control switch group, 16C: Automatic bass / chord selection switch group, S1: Switch for controlling start / stop of automatic rhythm, S2: Switch for giving intro or ending instruction, S3: Selection of normal pattern or " A switch for performing a “fill-in-to-normal” instruction; S4: a switch for selecting a variation pattern or a “fill-in-to-variation” instruction; 17: a panel switch detection circuit;
18: display control circuit, 19: sound source circuit, 20: sound system, 21: timer.

Continuation of the front page (56) References JP-A 63-100797 (JP, U) JP-A 63-199300 (JP, U) JP-A 4-101600 (JP, U) JP-B 60-28000 (JP) , B2) (58) Field surveyed (Int. Cl. ⁶ , DB name) G10H 1/36-1/40 G10H 1/00 102

Claims (1)

(57) [Claims] 1. A performance pattern storage means for storing a plurality of main patterns for each of a plurality of selectable rhythms and a plurality of sub-patterns; a rhythm selection means for selecting a desired rhythm; and a desired main pattern. A main pattern selected by the main pattern selecting means from among the plurality of main patterns corresponding to the rhythm selected by the rhythm selecting means from the storage means, and an automatic operation according to the pattern is performed. First control means for performing a performance, and instructing means for instructing that a performance according to a desired sub-pattern is temporarily inserted during automatic performance, and thereafter shifting to a performance according to a desired main pattern . Sub of 1
Insert the performance according to the pattern and then the first main pattern
First instructor instructing the player to proceed to the performance according to the
A step and a second sub-pattern different from the first sub-pattern.
Insert the performance according to the turn, and then
Move to the performance according to the second main pattern different from the turn
And second instruction means for instructing the user to execute the instruction, and responding to the instruction in response to an instruction from any of the instruction means .
Perform automatic performance in accordance with the sub-pattern the sub-patterns to respond by reading from the storage unit, then the instruction
Corresponding to the second control means for automatic performance in accordance with the pattern of the main pattern is read from the storage means, during an automatic performance in accordance with the sub-pattern corresponding to one of the instruction of the instruction means, another If the instruction means is instructed, the sub-pattern being played is not changed, and the main pattern to be played thereafter is assigned to the other instruction means.
And a third control means for controlling the second control means to change to a main pattern.