JP2570562B2 - Automatic performance device and automatic accompaniment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention relates to a suitable automatic musical instrument and an automatic accompaniment apparatus for use in an electronic musical instrument, particularly the length
Different performance patterns with specific performances
By changing the length to match the pattern,
A rich automatic performance or automatic accompaniment is made possible.

[0002]

2. Description of the Related Art Conventionally, as an automatic accompaniment device for an electronic musical instrument, a plurality of sets of pattern data corresponding to a plurality of accompaniment styles such as rock, waltz, etc. are stored in a memory, and when a desired accompaniment style is selected, the corresponding accompaniment style is selected. It is known that automatic accompaniment is performed according to a set of pattern data corresponding to an accompaniment style. In such an apparatus, each set of pattern data represents an accompaniment sound generation pattern of a plurality of parts, such as a chord and a bass, so that the automatic accompaniment includes the automatic accompaniment of a plurality of parts.

[0003]

According to the above-described conventional apparatus, a plurality of sets of pattern data are stored in a memory in advance by a factory set, so that the user cannot change the pattern data as desired, and Had the disadvantage of becoming monotonous.

On the other hand, there is known a technique in which a user creates a desired accompaniment sound generation pattern, registers it in a memory, and executes automatic accompaniment according to the accompaniment sound generation pattern. When this technique is applied to the above-described conventional apparatus, a user can create an accompaniment sound generation pattern of a plurality of parts desired by the user and register the pattern in a memory, and can perform automatic accompaniment of a plurality of parts in accordance with the accompaniment sound generation pattern.

However, according to such an automatic accompaniment apparatus, the user presets the accompaniment sound generation patterns of all the parts, so that there is a disadvantage that a large amount of time and labor is required for the presetting operation as the number of parts increases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a musical performance
Combine turns to enjoy a variety of automatic performances
It is an object of the present invention to provide a new automatic performance device that can be used for wiping .

[0007]

An automatic performance according to the present invention
The device has a plurality of performance patterns including performance patterns of different lengths.
Storage means for storing turns, and the plurality of performance patterns
Selecting means for selecting a plurality of desired performance patterns from among
And the plurality of performance patterns selected by the selection means are long.
When different, one of the performance patterns
A designating means for designating the performance pattern of
Of the plurality of selected performance patterns, a finger is
The length of the performance pattern other than the specified performance pattern
Align to the performance pattern length specified by the specification means
The plurality of performance patterns are read in parallel from the storage means.
Reading means for outputting, and a plurality of performances selected by the selecting means.
The pattern is read in parallel by the reading means
A plurality of musical tones corresponding to the plurality of performance patterns
Generating means for generating information .

Further, the automatic accompaniment device according to the present invention is a first storage means for storing a plurality of sets of pattern data respectively corresponding to a plurality of accompaniment styles, wherein each set of pattern data is a plurality of parts of accompaniment sounds. A plurality of sets of pattern data each representing an occurrence pattern, wherein the plurality of sets have different pattern lengths of the accompaniment sound generation patterns, and a plurality of the accompaniment sound generation patterns represented by the plurality of sets of pattern data. Second storage means for storing a plurality of pattern specification data respectively specifying the accompaniment sound generation patterns of the selected plurality of parts; and a plurality of patterns representing the plurality of part accompaniment sound generation patterns specified by the plurality of pattern specification data Reading means for reading data from the first storage means in accordance with a predetermined tempo; Detection means for detecting the end timing of an accompaniment sound generation pattern of a predetermined part among the accompaniment sound generation patterns of a plurality of parts specified by the sound pattern designation data, and the plurality of patterns in response to the end timing detection by the detection means. Reading control means for controlling the reading means so as to return to the beginning of the accompaniment sound generation pattern of the plurality of parts specified by the designated data and repeat reading of a plurality of pattern data representing the accompaniment sound generation pattern of the plurality of parts; And an accompaniment sound generating means for generating an accompaniment sound signal of a plurality of parts corresponding to a plurality of pattern data read from the one storage means, respectively.

[0009]

According to the automatic performance device of the present invention , the length differs.
Multiple performance patterns to be specified
Automatic performance by reading in parallel at the same length of turn
A performance is performed. Therefore, multiple performances of different lengths
A variety of automatic performances are possible by combining turns
Become.

In the automatic accompaniment apparatus according to the present invention, when the end timing of a predetermined accompaniment sound generation pattern is detected from among the accompaniment sound generation patterns of the plurality of parts specified by the plurality of pattern designation data, the plurality of parts are detected. The pattern data is read out repeatedly by returning to the beginning of the accompaniment sound generation pattern of, so that the automatic accompaniment of a plurality of parts is performed with the pattern length of another accompaniment sound generation pattern being aligned with the predetermined accompaniment sound generation pattern. . Therefore, even if the accompaniment sound generation patterns of a plurality of parts having different pattern lengths are combined, the automatic accompaniment is performed without any trouble.

In the automatic accompaniment device according to the present invention, the predetermined accompaniment sound generation pattern is the longest accompaniment sound generation pattern and the shortest accompaniment sound generation pattern is shorter than the longest accompaniment sound generation pattern. The end timing may be detected, and a part of the short accompaniment sound generation pattern (for example, the first measure) may be repeated from the end timing to the end of the longest accompaniment sound generation pattern so that the pattern length becomes the longest pattern. . In this way, it is not necessary to use a part of the long pattern, and it is possible to perform automatic accompaniment utilizing the long pattern.

[0012]

FIG. 1 shows an automatic accompaniment apparatus for an electronic musical instrument according to an embodiment of the present invention. In this embodiment, the generation of manual performance sounds and automatic accompaniment sounds is controlled by a microcomputer. Has become.

The bus 10 has a keyboard circuit 12, a switch circuit 14, a CPU (central processing unit) 16, a program memory 18, a working memory 20, and an accompaniment data memory 2.
2, a combination data memory 24, a tone generator 26 and the like are connected.

The keyboard circuit 12 includes, for example, a single-step keyboard. On the keyboard, usually, a melody performance is performed in a right key range, and an accompaniment such as a chord (chord) is performed in a left key range. The keyboard is provided with key switches for each key, and by scanning these key switches, key operation information is detected for each key.

The switch circuit 14 includes various switches provided on the panel surface. Switches related to the embodiment of the present invention include the following (1) to (6).

(1) Start / stop switch: This is a command for starting or stopping automatic accompaniment.

(2) Accompaniment pattern selection switch. This switch is used to select an arbitrary one of a plurality of accompaniment patterns corresponding to a plurality of accompaniment styles such as rock and waltz. Alternatively, it is operated when creating combination pattern data.

(3) Combination pattern selection switch: This switch is used to select an arbitrary one of a plurality of registered combination patterns, and is operated when starting automatic accompaniment or when creating combination pattern data. Is done.

(4) Combination processing switch. This switch is turned on when the processing shifts to combination processing for creating combination pattern data. To end the combination processing, turn off this switch.

(5) Part selection switch: This switch is used to select any one of four parts, chords 1 and 2, a bass and a drum, in the combination processing. Here, the chords 1 and 2 are parts that automatically perform chordal accompaniment mainly in the middle range, bass parts are parts that automatically perform bass accompaniment mainly in the low range, and drum parts are percussion sounds such as drums and cymbals. This is a part that performs rhythm accompaniment automatically by using this.

(6) Registration switch ... This switch is turned on to register the number of the accompaniment pattern selected when creating the combination pattern data.

In the switch circuit 14, operation information is detected for each switch by scanning various switches.

The CPU 16 executes various processes for generating a manual performance sound and an automatic accompaniment sound according to a program stored in a program memory 18 composed of a ROM (Read Only Memory). 4 to 8 will be described later.

The working memory 20 is composed of a RAM (random access memory), and includes a storage area used as a register, a counter, and the like when the CPU 16 performs various processes. Registers related to the embodiment of the present invention will be described later.

The accompaniment data memory 22 is composed of a ROM. For example, the 0th, 1st, 2nd ... accompaniment data corresponding to a plurality of accompaniment styles such as rock, waltz, etc. in a format as shown in FIG. AD (0), AD
(1), AD (2)... Are stored. Each accompaniment data is composed of header data HD and accompaniment pattern data AP, as typically shown for AD (0).

In the 0th accompaniment data AD (0), the header data HD includes bar number data PTNMJ (0) and
Beat number data PTNMT (0) and timbre data PTNTC (0,
0), PTNTC (0, 1) and PTNTC (0, 2)
The accompaniment pattern data AP includes pattern data PP (0,0), PP (0,1), PP for each of chord 1, chord 2, bass and drum parts.
(0,2) and PP (0,3).

Each pattern data represents an accompaniment sound generation pattern for a plurality of measures of the corresponding part, and the accompaniment pattern represented by each accompaniment pattern data includes an accompaniment sound generation pattern represented by four part part pattern data. Accompaniment patterns include accompaniment patterns of numbers 0, 1, 2,... Corresponding to the 0th, 1st, 2nd,.

In the following description, the accompaniment sound generation pattern represented by each part pattern data is called a part pattern.
A PP (X, Y) code is assigned to each part, and X represents an accompaniment pattern number and Y represents a part number. For example,
The part pattern PP (0,0) is an accompaniment sound generation pattern represented by the part pattern data PP (0,0). The display of the accompaniment pattern number and the part number by (X, Y) is based on the tone color data PTNT.
Also applies to C (X, Y).

The bar number data PTNMJ (0) indicates the bar number (for example, 2) of the part pattern. Beat count data P
TNMT (0) represents the number of beats in a bar (the number of quarter notes) when one beat corresponds to a quarter note. For example, 3
In / 4 time, the beat number data PTNMT (0) is 3
Is stored.

First, second ... accompaniment data AD (1), A
For D (2), header data and performance pattern data are stored in the memory 22 in the same manner as described above for the 0th accompaniment data. Accompaniment data AD (0),
For AD (1), AD (2) ..., the pattern length (number of measures and / or beats) of the part pattern is not constant,
For example, in both AD (1) and AD (2), the number of beats is 3
But the number of measures differs between 2 and 4, or AD
In (3) and AD (4), the number of measures is equal to 2 and the number of beats is different between 3 and 4.

The combination data memory 24 stores R
AM, which the user can use as an example.
. 0th, 1st, 2nd... Combination data CD (0), CD (1), CD
(2) ... can be stored. Each combination data includes header data CHD and combination pattern data C as representatively shown for CD (0).
P.

The 0th combination data CD (0)
, The header data CHD is the measure number data CPT.
MJ (0) and beat number data CPTMT (0), and the combination pattern data CP is code number 1, code 2, pattern number data CPT (0,0) of each part of the bass and drum, and CPT. (0,
1), CPT (0, 2) and CPT (0, 3).

Each pattern number data designates a part pattern to be used for automatic accompaniment of a corresponding part by an accompaniment pattern number. For example, when the pattern number data CPT (0,0) designates an accompaniment pattern number 0, Indicates the part pattern PP (0, 0) shown in FIG. The combination pattern represented by each combination pattern data includes four part patterns specified by four accompaniment pattern numbers. The combination patterns are 0th, 1st,
Number 0, corresponding to the second combination data,
There are 1, 2,... Combination patterns.

In the following description, the pattern number data is given a CPT (P, Q) code for each part, and P represents a combination pattern number and Q represents a part number. The display of CPT (P, Q) is also used to display a storage area for storing pattern number data. For example, the storage area CPT (0, 0)
Is a storage area for the pattern number data CPT (0, 0).

When the user creates combination pattern data, for example, the accompaniment pattern number 0 for the chord 1 part, the accompaniment pattern number 1 for the chord 2 part, the accompaniment pattern number 3 for the bass part, and the accompaniment pattern number for the drum part A desired accompaniment pattern number is designated for each part, such as number 5. That is, the designation of the accompaniment pattern number at this time is not limited to the accompaniment data having the same accompaniment style, but may be applied to accompaniment data having different accompaniment styles.

By the way, the accompaniment data AD (0) shown in FIG.
As described above, the pattern length of the part pattern for AD (1), AD (2),... Is not constant. When the combination pattern data is created by specifying the accompaniment pattern numbers for the part patterns having different pattern lengths as described above, when performing the automatic accompaniment according to the combination pattern data, the pattern end timing differs between parts, so that the repetitive performance is performed. There is an inconvenience that the timing does not match.

In order to avoid such inconvenience, in the present invention, automatic accompaniment is performed with uniform pattern lengths. Specifically, among the four part patterns specified by the combination pattern data CP, the part pattern having the longest pattern length is detected, and the data representing the number of measures and the number of beats are respectively transmitted to the measure number data CPTM.
J (0) and beat number data CPTMT (0) are stored, and the pattern length is made equal to the longest pattern length based on the stored data.

The first, second,... Combination data C
D (1), CD (2),..., In the same manner as described above for the 0th combination data.
Can store header data and combination pattern data.

The tone generator 26 includes a first musical tone generator for manual performance and a second musical tone generator for automatic accompaniment. The second musical tone generator includes a code 1, a code 2, and a bass. And four tone generation channels corresponding to each part of the drum. Tone generation channels corresponding to chord 1, chord 2 and bass parts respectively have tone registers TC (0), TC
(1) and TC (2) are provided. Each tone generating channel is capable of generating a tone signal having tone characteristics corresponding to tone data set in the tone register.

The sound system 28 converts a manual performance sound signal and a tone signal such as an automatic accompaniment sound signal of each part supplied from the tone generator 26 into sound.

The timer 30 supplies an interrupt command signal INT to the CPU 16, and the timer 30 supplies the interrupt command signal INT.
Is generated at a timing corresponding to a 96th note in one bar. The CPU 16 starts the interrupt processing of FIG. 7 every time the CPU 16 receives the interrupt command signal INT.

Of the registers in the working memory 20, those related to the implementation of the present invention are listed as (1) to (15) below. These registers are used in the processing of FIGS. 4 to 8 and are shown in FIG.

(1) Chord root register RT ...
The chord root data (for example, data representing root name C) obtained by the chord detection process is stored.

(2) Code type register TP ...
The code type data (for example, data representing a code type measure) obtained by the code detection process is stored.

(3) Accompaniment pattern number register PTN
... This is to set the number of the accompaniment pattern selected by the accompaniment pattern selection switch.

(4) Combination pattern number register CPTN: This register sets the number of the combination pattern selected by the combination pattern selection switch.

(5) Combination flag CMB... This is a 1-bit register, and if it is 1, it indicates that the automatic accompaniment mode is based on the combination pattern.
If it is 0, it indicates that the automatic accompaniment mode is based on the normal accompaniment pattern.

(6) Run flag RUN: This is a 1-bit register. If it is 1, it indicates that automatic accompaniment is being performed, and if it is 0, it indicates that automatic accompaniment is stopped.

(7) Part-based accompaniment pattern number registers M0 to M2... These registers M0, M1, M2
Are registers corresponding to the three parts of chord 1, chord 2, and bass, respectively, in which accompaniment pattern numbers are set.

(8) Address pointer P0 for each part
P3... These pointers P0, P1, P2, and P3 indicate read addresses for four part patterns of code 1, code 2, base, and drum, respectively.

(9) Clock counter CLK ...
The interrupt command signal INT generated from the timer 30 is counted as a tempo clock signal, and is reset to 0 at the end of the part pattern in the automatic performance mode using the accompaniment pattern, and forms a combination pattern in the automatic performance mode using the combination pattern. The pattern length is reset to 0 at the end of the longest part pattern among the four part patterns.

(10) Part number register PRT... This register sets the part number.

(11) Pattern length comparison register ML
N, LN... These registers are used when comparing pattern lengths of a plurality of part patterns. The pattern length is represented by the product of the number of measures and the number of beats.

(12) Variable register K... This sets variables K = 0 to 4 in the combination processing.

(13) Pattern number data register M
... This is where the pattern number data read from the combination data memory 24 is set.

(14) Measure number register MJ: This is for setting the measure number data.

(15) Beat count register MT: This is where beat count data is set.

FIG. 4 shows the flow of the processing of the main routine. This routine is started when the power is turned on or the like.

In step 40, an initial setting process is performed to set various registers to an initial state. Then, the process proceeds to a step 42.

In step 42, it is determined whether there is a key-on or key-off key event on the keyboard of the keyboard circuit 12. If there is a key event (Y), the process proceeds to step 44, where it is determined whether the key area with the key event is the left key area. If the determination result is affirmative (Y), a code detection process is performed in step 46. That is, the chord root note and chord type are detected based on the key depression state in the left key range, and the chord root note data and chord type data relating to the detection are set in the registers RT and TP, respectively.

If the decision result in the step 44 is negative (N), it means that a key event has occurred in the right key range, and a sounding / muting process is performed in a step 48. That is, if the key event is a key-on event, the pitch data of the key related to the key-on is supplied to the manual tone generator of the tone generator 26 to generate a tone signal (manual performance tone signal) corresponding to the pitch data. . Also,
If the key event is a key-off event, the tone signal corresponding to the key related to the key-off is attenuated.

If the result of the determination at step 42 is negative (N) or if the processing at step 46 or 48 has been completed, the routine proceeds to step 50, where one of the accompaniment pattern selection switch or the combination pattern selection switch is selected. It is determined whether the selection switch has an ON event. If the determination result is affirmative (Y), it is determined in step 52 whether a combination pattern has been selected. If the result of this determination is affirmative (Y), the routine proceeds to step 54, where the number of the selected combination pattern is set in the register CPTN and the flag CMB is set to 1. If the determination result of step 52 is negative (N), the process proceeds to step 56, where the number of the accompaniment pattern related to the selection is set in the register PTN and the flag CMB is set to 0.

When the result of the determination at step 50 is negative (N) or when the processing at step 54 or 56 is completed, the routine proceeds to step 58, where it is determined whether or not the start / stop switch has an ON event. If the result of this determination is affirmative (Y), the routine proceeds to step 60, where a subroutine of start / stop processing is executed as described later with reference to FIG.

When the result of the determination at step 58 is negative (N) or when the processing at step 60 has been completed, the routine proceeds to step 62, where it is determined whether or not the combination processing switch has an ON event. If the result of this determination is affirmative (Y), the routine proceeds to step 64, where a combination processing subroutine is executed as described later with reference to FIG.

When the result of the determination at the step 62 is negative (N) or when the processing at the step 64 is completed, the routine proceeds to a step 66, where other processing is executed. Thereafter, the process returns to step 42, and the subsequent processes are repeated in the same manner as described above.

FIG. 5 shows a subroutine of the start / stop processing. In step 70, the flag R
The value of UN is inverted to 0 if it is 1, and to 1 if it is 0. Then, the process proceeds to a step 72.

In step 72, it is determined whether the value of RUN is 1. If the result of this determination is negative (N), there is no need to prepare for the start of automatic accompaniment, and the routine returns to the routine of FIG.

If the decision result in the step 72 is affirmative (Y), the process shifts to a step 74 to decide whether the value of the flag CMB is 1 (is an automatic accompaniment mode by a combination pattern). If the result of this determination is affirmative (Y), the flow proceeds to step 76, in which the pattern number data CP of the code 1, code 2 and the base 3 parts in the combination pattern specified by the data of the register CPTN
T (CPTN, 0), CPT (CPTN, 1) and CP
T (CPTN, 2) is read from the memory 24 and written into the registers M0, M1 and M2, respectively. For example, if the data of the register CPTN specifies the combination pattern number 1, the pattern number data CPT (1,0), CPT (1,1) in the first combination data CD (1) is read from the memory 24. And CPT (1,
2) are read out and the registers M0, M1 and M2 respectively
Is written to. Thereafter, the process proceeds to step 78.

In step 78, the pointers P0 to P3 corresponding to the four parts are set to the head addresses of the corresponding part patterns in the combination pattern specified by the data of the register CPTN. For example, register C
The data of the PTN specifies 1 as in the above example, and the data CPT (1, 0), CPT (1, 1), CPT (1,
Assuming that 2) and CPT (1, 3) represent the accompaniment pattern numbers 2, 1, 0 and 0, respectively, the pointer P
In FIG. 2, 0, P1, P2, and P3 are part patterns PP (2, 0) in accompaniment data AD (2), part patterns PP (1, 1) in accompaniment data AD (1), and accompaniment data AD. Part pattern PP (0, 2) in (0)
And part pattern PP in accompaniment data AD (0)
It is set to the start address of each of (0, 3). Thereafter, the process proceeds to step 80.

In step 80, the chord 1, chord 2 specified by the accompaniment pattern numbers of the registers M0, M1 and M2, and the tone color data PTNTC of the three parts of the bass
(M0,0), PTNTC (M1,1) and PTNTC
(M2, 2) is read from the memory 22 and written into the registers TC (0), TC (1) and TC (2), respectively. For example, if the accompaniment pattern numbers of the registers M0, M1 and M2 are 2, 1 and 0 as in the above example, the memory 22
From the tone color data PTNT in the accompaniment data AD (2).
C (2,0), tone color data P in accompaniment data AD (1)
The tone color data PTNTC (0, 2) in the TNTC (1, 1) and the accompaniment data AD (0) are read out and written in the registers TC (0), TC (1), and TC (2), respectively.

If the decision result in the step 74 is negative (N), the automatic accompaniment mode using a normal accompaniment pattern is reached, and the process proceeds to a step 84. In step 84, the pointers P0 to P3 are set to the head addresses of the corresponding part patterns in the accompaniment pattern specified by the data in the register PTN. For example, if the data in the register PTN indicates the accompaniment pattern number 1, the pointers P0, P1, P2 and P3 indicate the part patterns PP (1,0), PP in the accompaniment data AD (1) in FIG.
(1,1), PP (1,2), and PP (1,3) are set to the respective start addresses. Thereafter, step 86
Move on to

At step 86, the chord 1, chord 2 specified by the accompaniment pattern number of the register PTN and the tone color data PTNTC (PTN,
0), PTNTC (PTN, 1) and PTNTC (PTN
N, 2) are read from the memory 22, and
Write to C (0), TC (1) and TC (2). For example, if the accompaniment pattern number of the register PTN is 1 as in the above example, the accompaniment data AD
(1) Tone data PTNTC (1, 0), PTNT in
C (1,1) and PTNTC (1,2) are read, and registers TC (0), TC (1), and TC (2), respectively.
Is written to.

When the processing in step 80 or 86 has been completed, the flow shifts to step 82, where 0 is set in the counter CLK. Thereafter, the process returns to the routine of FIG.

FIG. 6 shows a subroutine of the combination process. In step 90, it is determined whether the combination pattern selection switch has an ON event. If the result of this determination is affirmative (Y), the routine proceeds to step 92, where the number of the selected combination pattern is set in the register CPTN.

If the decision result in the step 90 is negative (N) or the process in the step 92 is ended, the process shifts to a step 94 to determine whether or not the part selection switch has an on event. If the result of this determination is affirmative (Y), the routine proceeds to step 96, where the number of the selected part is set in the register PRT.

If the decision result in the step 94 is negative (N), or if the process in the step 96 is completed, the process shifts to a step 98, where it is determined whether or not the accompaniment pattern selection switch has an ON event. If the result of this determination is affirmative (Y), the routine proceeds to step 100, where the number of the accompaniment pattern relating to the selection is set in the register PTN.

When the judgment result of step 98 is negative (N) or when the processing of step 100 is completed,
In step 102, it is determined whether the registration switch has an ON event. If this determination result is negative (N),
Returning to step 90, the subsequent processing is repeated in the same manner as described above. Therefore, the user must register CPTN, PR
Desired combination pattern numbers, part numbers, and accompaniment pattern numbers can be set in T and PTN, respectively.

When the registration switch is turned on after such a setting process, the result of the determination at step 102 becomes affirmative (Y), and the routine proceeds to step 104. Step 104
In the pattern number data storage area CPT (C) in the memory 24 specified by the combination pattern number of the register CPTN and the part number of the register PRT.
PTN, PRT) is written with the accompaniment pattern number of the register PTN. For example, the registers CPTN, PRT and P
Assuming that the numbers set in TN are 0, 0, and 1, respectively, the accompaniment pattern number 1 is written in the storage area CPT (0, 0) in FIG. This accompaniment pattern number 1
The part pattern PP (1,0) of the chord 1 in the accompaniment data AD (1) of FIG. 2 is designated.

Next, at step 106, it is determined whether or not the combination processing switch is off. If the determination result is negative (N), the process returns to step 90, and the subsequent processing is repeated in the same manner as described above. Therefore, the user registers the accompaniment pattern number of the register PTN once in the storage area CPT (CPTN, PRT) as described above, selects a desired part and an accompaniment pattern, and turns on the registration switch to leave the remaining part. A desired accompaniment pattern number can also be registered for the three parts. For example,
After registering the accompaniment pattern number 1 in the storage area CPT (0, 0), the accompaniment pattern numbers 0, 2, and 4 are designated corresponding to the part numbers 1, 2, and 3, respectively, and the registration switch is turned on each time the accompaniment pattern number is designated. In this case, the storage area CPT (0,
Accompaniment pattern numbers 0, 2, and 4 are registered in 1), CPT (0, 2), and CPT (0, 3), respectively.

After the desired combination pattern is created as described above, when the combination processing switch is turned off, the result of the determination in step 106 becomes affirmative (Y), and the routine proceeds to step 108. Step 108
Then, 0 is set in both the registers MLN and K. Then, the process proceeds to step 110.

In step 110, the pattern number data CPT (CPTN, CPTN) specified by the combination pattern number of the register CPTN and the value of the register K
K) is read from the memory 24 and written into the register M. Assuming that the combination pattern number of the register CPTN is 0 as in the above example, the pattern number data CPT (0, 0) of FIG.

Next, at step 112, the bar number data PTNM in the accompaniment data designated by the data in the register M
J (M) and beat rate data PTNMT (M) are stored in the memory 22.
And write to the registers MJ and MT, respectively.
Then, the process proceeds to a step 114, wherein a product of the number of measures in the register MJ and the number of beats in the register MT is obtained, and a pattern length comprising the product is set in the register LN. Thereafter, the process proceeds to step 116.

In step 116, it is determined whether the value of the register LN is larger than the value of the register MLN. Step 108
Step 1 for the first time after setting register MLN to 0
When it reaches 16, the result of the determination at step 116 is affirmative (Y), and the routine proceeds to step 118.

At step 118, the memory 2 designated by the combination pattern number of the register CPTN
4, the bar number data of the register MJ and the beat number data of the register MT are written in the bar number data storage area CPTMT (CPTN) and the beat number data storage area CPTMT (CPTN). Assuming that the combination pattern number of the register CPTN is 0 as in the above example, the data of the registers MJ and MT are written in the storage areas CPTMJ (0) and CPTMT (0) of FIG. 3, respectively. Thereafter, at step 120, the register L is stored in the register MLN.
Set the pattern length of N.

When the processing in step 120 is completed or when the result of the determination in step 116 is negative (N), the value of the register K is incremented by 1 in step 122, and the process proceeds to step 124, where Determine whether the value is 4. When the process proceeds to step 124 for the first time from step 108, the value of the register K is 1, and
Is negative (N), and the process returns to step 110. Then, the processing after step 110 is repeated in the same manner as described above.

As an example, assuming that the combination pattern number of the register CPTN is 0, step 110
Then, the pattern number data of the storage area CPT (0, 1) is written into the register M. Then, Step 112
In, the number of measures and the number of beats in the accompaniment data specified by the data in the register M are set in the registers MJ and MT,
In step 114, the pattern length obtained by multiplying the values of the registers MJ and MT is set in the register LN. Thereafter, in step 116, it is determined whether the pattern length of the register LN is longer than the pattern length of the register MLN.
If the result of this determination is negative (N), step 11
The process proceeds to step 122 without passing through steps 8 and 120. Therefore, the data in the storage areas CPTMT (0), CPTMT (0) and the register MLN are not rewritten, and the previous data is stored.

Thereafter, when the above processing is repeated until the value of the register K becomes 4, the four parts specified by the pattern number data CPT (0,0) to CPT (0,3) are stored in the register MLN. Is set to the longest pattern length in the part pattern of the storage area CPTMJ.
(0) and CPTMT (0) store the maximum number of measures and the maximum number of beats corresponding to the longest pattern length. When the value of the register K becomes 4, step 124
Is affirmative (Y), and the process returns to the routine of FIG.

As described above, for combination pattern number 0, combination data CD (0)
Is created, the combination pattern number 1,
The combination data CD (1),
CD (2)... Can be created.

FIG. 7 shows an interrupt processing routine. This routine is started each time the timer 30 in FIG. 1 generates an interrupt instruction signal INT. Step 130
Then, it is determined whether the flag RUN is 1. If the determination result is negative (N), the process returns to the routine of FIG. 4 because the automatic accompaniment sound generation processing described below is unnecessary.

The determination result of step 130 is positive (Y)
, The process proceeds to step 132 where the register PR
Set T to 0. In step 134, data for one tone generation timing of the part pattern indicated by the pointer corresponding to the part number of the register PRT is read from the memory 22. First step from step 132
When it comes to 34, the code 1 corresponding to the part number 0
Data for one tone generation timing of the part pattern is read.

Next, at step 136, it is determined whether or not the read data is not end data and timing for sound generation. Here, it can be determined whether or not the timing should generate a sound, based on whether or not the timing indicated by the counter CLK matches the timing indicated by the read data. If the decision result in the step 136 is affirmative (Y), the process shifts to a step 138 to perform a tone generation process. In the tone generation process, the pitch is determined by appropriately converting the key code (pitch data) corresponding to the pressed key detected from the keyboard with the chord root data of the register RT and the chord type data of the register TP. Is supplied to a tone generation channel having a register TC (PRT) corresponding to the part number of the register PRT to generate a tone signal. For example, when step 138 is first reached from step 132, a tone having a tone corresponding to the tone data of TC (0) and a predetermined pitch from the tone generating channel of code 1 having the register TC (0). A signal is generated. After this,
After moving the pointer in step 140, step 13
Return to 4.

In step 134, the part pattern data is read for one tone generation timing as in the previous case. And
At step 136, a determination is made in the same manner as the previous time. If the result of this determination is affirmative (Y), step 1
At 38, a tone signal is generated. Thereafter, the process returns to step 134 via step 140. In this manner, a plurality of tone signals can be generated substantially simultaneously at the timing indicated by the counter CLK.

If the determination result of step 136 is negative (N)
When it becomes, the process proceeds to step 142 where the register PR
Increase the value of T by one. For example, the first time the routine goes to step 142 after step 132, the value of PRT becomes 1. Then, it is determined in step 144 whether the value of PRT is 3. If the result of this determination is negative (N), step 1
Return to 34.

For example, when the value of PRT is 1,
Steps 134 to 140 make it possible to generate one or a plurality of tone signals of the chord 2 part of the part number 1 in the same manner as described above. Then, when the process proceeds from step 136 to step 142, the value of PRT becomes 2, and it becomes possible to generate one or a plurality of tone signals of the base part of part number 2 in the same manner as described above. Thereafter, step 136
From step 142, the value of PRT becomes 3.
Therefore, the determination result of step 144 becomes affirmative (Y), and the process proceeds to step 146.

At step 146, data for one tone generation timing of the pattern of the drum part pointed by the pointer P3 is read from the memory 22. Then, the process proceeds to step 148, and it is determined whether the read data is not end data and timing to generate a sound is the same as described in step 136. If this determination result is affirmative (Y), step 1
It moves to 50 and performs rhythm sound generation processing. In the rhythm sound generation process, one or a plurality of percussion sound signals whose sound generation is instructed by pattern data for one sound generation timing are generated from a musical sound generation channel of the drum part.

After step 150, the pointer is incremented in step 152, and the process returns to step 146. In step 146, data for one tone generation timing is read out as in the previous time, and in step 148, determination is made as in the previous time. If the result of this determination is negative (N),
Move to step 154.

At step 154, the value of the counter CLK is increased by one. Then, the process proceeds to step 156, where it is determined whether the flag CMB is 1. This judgment result is negative (N)
If so, the process proceeds to step 158, where the bar number data P in the accompaniment data specified by the data in the register PTN
TNMJ (PTN) and beat rate data PTNMT (PT
N) is read from the memory 22 and written into the registers MJ and MT, respectively.

Next, at step 160, the counter CL
It is determined whether the count value of K is equal to the product of the number of measures in the register MJ, the number of beats in the register MT, and the number of clocks per beat 24 (whether the pattern is at the end). If the determination result is negative (N), the process returns to the routine of FIG.

The determination result of step 160 is positive (Y)
, The process proceeds to step 162, where the pointer P0
To P3 are set at the beginning of the corresponding part pattern.
Then, in step 164, the counter CLK is reset to 0. As a result, repetitive performance of the accompaniment pattern according to the selection becomes possible. Thereafter, the process returns to the routine of FIG.

The determination result of step 156 is affirmative (Y)
If so, the process moves to step 166 to execute a combination pointer processing subroutine as described later with reference to FIG. Thereafter, the process returns to the routine of FIG.

FIG. 8 shows a subroutine of the combination pointer process. In step 170,
The bar number data CPTMJ (CPTN) and the beat number data CPTMT (CPTN) in the combination data specified by the data in the register CPTN are read from the memory 24 and written into the registers MJ and MT, respectively.

Next, at step 172, the counter CL
It is determined whether the value of K is equal to the product of the number of measures in the register MJ, the number of beats in the register MT, and the number of clocks per beat 24 (whether the longest pattern ends). If the result of this determination is negative (N), the operation proceeds to step 174, where 0 is set in the register PRT. Then, the process proceeds to step 176.

At step 176, the pattern number data C designated by the data of the registers CPTN and PRT
PT (CPTN, PRT) is read from the memory 24 and written into the register M. The bar number data PTN in the accompaniment data specified by the accompaniment pattern number of the register M
MJ (M) and beat rate data PTNMT (M) are stored in memory 2
2 and set in registers MJ and MT, respectively. For example, if the accompaniment pattern number of the register M is 1, the accompaniment data AD of FIG.
The bar number data PTNMJ (1) and the beat number data MT (1) in (1) are read out, and the registers MJ and M
Written in T.

Next, at step 180, the counter CL
It is determined whether the value of K is equal to the product of the number of measures in the register MJ, the number of beats in the register MT, and the number of clocks per beat 24 (whether the pattern of the chord 1 part specified by the accompaniment pattern number of the register M is the end). . If the result of this determination is affirmative (Y), the flow proceeds to step 182 where the register PR
The pointer corresponding to the part number of T is set to the head address of the part pattern pointed to by itself. When the process first proceeds to step 182 from step 174, the pointer P0 indicates the part pattern PP (1,0) of the chord 1 part in the accompaniment data AD (1) corresponding to the accompaniment pattern number 1 as in the above example, for example. Although pointing to the final address, the processing in step 182 indicates the head address of the part pattern PP (1, 0). Thereafter, the process proceeds to step 184.

At step 184, the value of the register PRT is increased by one. Then, in step 186, it is determined whether the value of PRT is 4. Step 1 only after step 174
When it reaches 86, the value of PRT is 1, so the result of the determination in step 186 is negative (N), and
Return to 76. Thereafter, the processing of steps 176 to 180 is performed with the value of PRT set to 1.

The result of determination at step 180 is negative (N).
If so, the process proceeds to step 184 without passing through step 182. This is the part pattern P of the chord 2 part in the accompaniment data specified by the accompaniment pattern number of the register M.
This means that P (CPTN, 1) is not over. Thereafter, the value of PRT is set to 2 in step 184, and the process returns to step 176 via step 186, and the same processing as described above is performed with the value of PRT being 2.

Such processing is performed until the value of PRT becomes 4. As a result, the end of the pattern among the four part patterns of the chords 1 and 2, the bass and the drum constituting the combination pattern returns to the beginning again and the performance is repeated. And the value of PRT is 4
, The result of the determination at step 186 is affirmative (Y), and the routine returns to the routine of FIG.

As for the part pattern having the longest pattern length, the determination result in step 172 becomes affirmative (Y) while the shorter part pattern is repeatedly played as described above. In this case, step 188
And sets the pointers P0 to P3 to the head addresses of the part patterns to which they point. Then, in step 200, 0 is set to the counter CLK. As a result, all four part patterns constituting the combination pattern return to the beginning and are repeatedly played. At this time, for the part pattern shorter than the longest pattern length, the repetitive performance is performed until the longest pattern length part pattern ends, but when the longest pattern length part pattern ends, the pattern is forced even during the repeated performance. Back to the top. That is, a part pattern having an irregular pattern length is repeatedly played with the pattern length aligned with the longest pattern length. After step 200, the process returns to the routine of FIG.

The present invention is not limited to the above embodiment, but can be implemented in various modifications. For example, the memory 22 may be configured with a RAM, and a user may create and write an arbitrary accompaniment pattern. Further, the short part pattern may be repeated from the middle instead of the beginning, or may be repeated from the last bar.

[0110]

As described above, according to the present invention, the length
Performance patterns that differ from one another
Automatic performance is performed by adjusting the length to read
Combine performance patterns of different lengths
This allows you to enjoy a variety of automatic performances .

When the automatic accompaniment is performed with uniform pattern lengths, it is possible to combine accompaniment sound generation patterns with irregular pattern lengths, and the accompaniment contents can be further varied. .

Further, when the automatic accompaniment is performed with the pattern length aligned with the longest pattern, the accompaniment content can be further varied by utilizing the long pattern.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an automatic accompaniment device for an electronic musical instrument according to an embodiment of the present invention.

FIG. 2 is a diagram showing a storage format of accompaniment data.

FIG. 3 is a diagram showing a storage format of combination data.

FIG. 4 is a flowchart showing a main routine.

FIG. 5 is a flowchart illustrating a subroutine of a start / stop process.

FIG. 6 is a flowchart showing a subroutine of a combination process.

FIG. 7 is a flowchart showing an interrupt process.

FIG. 8 is a flowchart showing a subroutine of a combination pointer process.

[Explanation of symbols]

10: bus, 12: keyboard circuit, 14: switch circuit, 1
6: CPU, 18: program memory, 20: working memory, 22: accompaniment data memory, 24: combination data memory, 26: tone generator, 2
8: sound system, 30: timer.

 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-198094 (JP, A) JP-A-4-51198 (JP, A) JP-A-4-57094 (JP, A)

Claims (3)

(57) [Claims] A plurality of performances including performance patterns of different lengths.
Storage means for storing a performance pattern; and a plurality of desired performance patterns from the plurality of performance patterns.
And a plurality of performance patterns selected by the selection means,
When different, one performance is selected from the plurality of performance patterns.
Designating means for designating a playing pattern; and a plurality of playing patterns selected by the selecting means.
Performance pattern other than the performance pattern specified by the
Length of the performance pattern specified by the specification means.
Storing the plurality of performance patterns so that
Parallel to reading the reading means from the plurality of performance patterns selected by said selection means said read
The plurality of performances are read in parallel by the output means.
To generate multiple series of musical information corresponding to the playing pattern
An automatic performance device comprising: 2. A first storage means for storing a plurality of sets of pattern data respectively corresponding to a plurality of accompaniment styles, wherein each set of pattern data includes a plurality of pattern data respectively representing an accompaniment sound generation pattern of a plurality of parts. A plurality of sets of accompaniment sound generation patterns having different pattern lengths, and a plurality of parts of accompaniment sound generation patterns selected from a large number of accompaniment sound generation patterns represented by the plurality of sets of pattern data. Second storage means for storing a plurality of pattern specification data each specifying a pattern; and a plurality of pattern data representing an accompaniment sound generation pattern of a plurality of parts specified by the plurality of pattern specification data according to a predetermined tempo. Reading means for reading from the storage means, and a plurality of pars designated by the plurality of pattern designating data. Detecting means for detecting an end timing of an accompaniment sound generation pattern of a desired part in the accompaniment sound generation pattern of the above, and accompaniment of the plurality of parts specified by the plurality of pattern designation data in response to the end timing detection by the detection means Read control means for controlling the read means so as to return to the beginning of the sound generation pattern and repeat reading of a plurality of pattern data representing the accompaniment sound generation pattern of the plurality of parts; and a plurality of read data read from the first storage means. And an accompaniment sound generating means for generating an accompaniment sound signal of a plurality of parts corresponding to the respective pattern data. 3. A first storage means for storing a plurality of sets of pattern data respectively corresponding to a plurality of accompaniment styles, wherein each set of pattern data includes a plurality of pattern data respectively representing a plurality of parts of accompaniment sound generation patterns. A plurality of sets of accompaniment sound generation patterns having different pattern lengths, and a plurality of parts of accompaniment sound generation patterns selected from a large number of accompaniment sound generation patterns represented by the plurality of sets of pattern data. Second storage means for storing a plurality of pattern specification data each specifying a pattern; and a plurality of pattern data representing an accompaniment sound generation pattern of a plurality of parts specified by the plurality of pattern specification data according to a predetermined tempo. Reading means for reading from the storage means, and a plurality of pars designated by the plurality of pattern designating data. Detecting means for detecting the end timing of an accompaniment sound generation pattern having a pattern length shorter than the longest accompaniment sound generation pattern among the accompaniment sound generation patterns, and said pattern length in response to the end timing detection by said detection means. Reading control means for controlling the reading means so as to read a part of the pattern data representing the accompaniment sound generation pattern having the short pattern length until the end of the longest accompaniment sound generation pattern; and the first storage means And an accompaniment sound generating means for generating accompaniment sound signals of a plurality of parts respectively corresponding to a plurality of pattern data read from the memory.