JP2848322B2 - Automatic accompaniment 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 accompaniment apparatus for automatically generating accompaniment sounds such as chords, bass sounds, and percussion sounds.

[0002]

2. Description of the Related Art Conventionally, this type of apparatus has been disclosed in, for example,
As shown in JP-A-3-1598, JP-A-2-17897, etc., accompaniment pattern data composed of normal pattern data, intro pattern data, and fill-in pattern data for each accompaniment style such as march, waltz, and rock. An automatic accompaniment based on intro pattern data can be added before automatic accompaniment based on normal pattern data can be added, or an automatic accompaniment based on fill-in pattern data can be inserted during automatic accompaniment based on normal pattern data. In this way, the monotony of the automatic accompaniment is eliminated.

[0003]

However, in the above-described conventional apparatus, only one type of pattern data such as normal, intro, and fill-in is prepared for each accompaniment style. However, there is a problem that it is not possible to generate an automatic accompaniment sound suitable for the musical composition.

SUMMARY OF THE INVENTION The present invention has been made to address the above-described problem, and an object of the present invention is to prepare a plurality of types of pattern data, such as the normal, intro, and fill-in, for each accompaniment style, and to prepare various types of music pieces. To provide an automatic accompaniment device that can generate an automatic accompaniment sound suitable for a musical idea and that can switch between musically natural patterns such as normal, intro, fill-in, and ending with a simple operation. Things.

[0005]

To achieve the above object, according to the solution to ##, the feature in construction of the invention described in claim 1, a plurality
At least the first and second normal
Turn data and at least first and second fill impatters
Accompaniment data memory (PLDT in FIG. 6)
(STLN, SCTN, TRKN)) and the multiple accompaniment styles
Of the accompaniment style selecting means (2 in FIG. 3)
2) and the accompaniment selected by the accompaniment style selecting means.
First and second normal pattern days belonging to the playing style
Normal pattern selector to select one of the
Steps (25a to 25d in FIG. 3) and the normal pattern
The first normal pattern data is selected by the selecting means.
Accompaniment selected by the accompaniment style selection means
Specify the first fill-in pattern data belonging to the style
The second normal pattern is selected by the normal pattern selecting means.
When the pattern data is selected, the accompaniment style
The second f belonging to the accompaniment style selected by the selecting means
Fill-in pattern to specify file-in pattern data
Specifying means (steps 302 to 308, 318 in FIG. 15;
21. Steps 464 to 478 in FIG.
First fill-in pattern data by pattern designating means
Is selected by the accompaniment style selection means when is specified
Normal pattern day belonging to the specified accompaniment style
Data as return pattern data, and
The second fill-in pattern data
Data is specified by the accompaniment style selection means
1st normal pattern belonging to the selected accompaniment style
A return pattern that specifies data as return pattern data
Means (steps 504 to 512 in FIG. 22)
Fill-in switch to instruct the play-in pattern
(26b in FIG. 3) and the normal pattern selecting means
The first or second normal pattern data selected from
Repeatedly read out the first or second normal
The fill-in switch during read-out of turn data
In response to the switch operation, the fill-in pattern
The first or second fill-in pattern specified by the column
Data for the first or second normal pattern data
For a predetermined period, and after the predetermined period has elapsed,
Return pattern data is specified by the return pattern
Read out the constant is the first or second node on Mar pattern data has been
Reading means (steps 440 to 458 in FIG. 20)
And the read first or second normal pattern data
Data and the first or second fill-in pattern data
Accompaniment sound signal generation means (4 in FIG. 2) for generating an accompaniment sound signal
0).

[0006]

[0007]

A second feature of the present invention is that a plurality of sets of normal pattern data for each of a plurality of accompaniment styles and a plurality of sets of ending patterns of a number smaller than the number of sets of the normal pattern data are provided. By storing data and a plurality of normal patterns in common with one ending pattern, an accompaniment data memory (FIG. 6) in which the plurality of sets of normal pattern data respectively correspond to the plurality of sets of ending pattern data. PLDT (STLN, SCTN, TRKN)), an accompaniment style selecting means (22 in FIG. 3) for selecting any one of the plurality of accompaniment styles, and an accompaniment style selected by the accompaniment style selecting means. A normal that selects one set of normal pattern data from a plurality of sets of normal pattern data to which the set belongs Turn selection means (25 in FIG. 3
a to 25d), and among a plurality of sets of ending pattern data belonging to the accompaniment style selected by the accompaniment style selecting means, one set corresponding to the set of normal pattern data selected by the normal pattern selecting means. Ending pattern designating means for designating a set of ending pattern data (step 34 in FIG. 16)
2 to 348, 358, steps 464 to 47 in FIG.
8), an ending switch (26c in FIG. 3) for instructing an ending pattern performance, and a set of normal pattern data selected by the normal pattern selecting means are repeatedly read out, and during reading of the same set of normal pattern data. Read means for reading out a set of ending pattern data designated by the ending pattern designating means for a predetermined period in response to the operation of the ending switch, and terminating the reading (steps 440 to 458 in FIG. 20).
And an accompaniment sound signal generating means (40 in FIG. 2) for generating an accompaniment sound signal in accordance with the set of read normal pattern data and the set of ending pattern data.

[0009]

According to the first aspect of the present invention, there is provided:
In the invention described in above, the accompaniment data memory
At least the first and second nos for each accompaniment style
Multiple pattern data and at least first and second fill
Pattern data is stored, and the accompaniment style selection
One accompaniment style is selected by the selection means
First, the first or second normal
When the round pattern is selected, the reading means sets the selection.
Belongs to the selected accompaniment style and has a normal putter
The first or second normal pattern selected by the
Sound data generation means
Accompaniment sound according to the normal pattern data read by
Generate a signal. And the fill-in switch is operated
Is read, the read normal pattern data is
Reading means if it is the first normal pattern data
Is the first specified by the fill-in pattern specifying means.
Read fill-in pattern data. In addition, the reading
The normal pattern data that was output is the second normal pattern.
Read data, the readout means fills the
Second fill-in pattern specified by the pattern specifying means
Read data. And the accompaniment sound signal generating means is
According to the read first or second fill-in pattern data,
To generate an accompaniment sound signal. Also, after a predetermined period
Reading of the fill-in pattern data is completed.
Then, the read-in fill-in pattern data is
Reading means for the first fill-in pattern data
Is the second normal specified by the return pattern specifying means.
Read the pattern data. In addition, the reading
Fill-in pattern data is the second fill-in pattern
If the data is data, the reading means operates as the return pattern finger.
Of the first normal pattern data designated by the setting means
read out. Then, the accompaniment sound signal generating means reads out the
Accompaniment sound according to the first or second normal pattern data
Generate a signal.

As a result, according to the present invention, the selected
1st or 2nd normal pattern in one accompaniment style
The first and second normal patterns are selected by selecting data.
One of them is played selectively (NOR 1 to NOR 1 in FIG. 1).
NOR4), the performance is performed by operating the fill-in switch.
Fill-in pattern corresponding to the normal pattern
The performance shifts to the performance (four FIL2s in Fig. 1),
After playing a turn, a note that differs from the previous normal pattern
Since it returns to the performance of the round pattern (NOR1, 2-FI of FIG. 1)
L2-NOR3,4), normal pas suitable for various musical compositions
If turn performance and fill-in pattern performance can be realized
Both perform normal patterns along the flow of the music
And the transition of the fill-in pattern performance can be realized. Special
In addition, at least two types of no
A round pattern and a fill-in pattern are prepared.
Since the transition takes place in the same style of accompaniment,
It produces rich and at the same time very natural accompaniment sounds.
Can be.

[0011]

[0012]

[0013]

[0014]

In the second aspect of the invention, the accompaniment data memory stores a plurality of sets of normal pattern data and ending pattern data for each of a plurality of accompaniment styles. When one accompaniment style is selected by the means and one set of normal pattern data is selected by the normal pattern selecting means, the reading means sets the normal pattern data among the plural sets of normal pattern data belonging to the selected accompaniment style. The selected set of normal pattern data is read, and the accompaniment sound signal generating means generates an accompaniment sound signal corresponding to the read normal pattern data. Then, when the ending switch is operated, the reading means is the ending pattern designated by the ending pattern designating means, and is selected from the plurality of sets of ending pattern data belonging to the selected accompaniment style. A set of ending pattern data corresponding to the set of normal pattern data is read out, and the accompaniment sound signal generating means generates an accompaniment sound signal corresponding to the read out ending pattern data.

As a result, according to the present invention, any one of a plurality of sets of normal patterns is played by selecting the normal pattern data in the selected same accompaniment style (NOR1 to NOR4 in FIG. 1). By operating the ending switch, the operation shifts to the performance of the ending pattern corresponding to the played normal pattern (FIG. 1).
END1 to END3), since the generation of the automatic accompaniment ends, it is possible to realize the normal pattern performance and the ending pattern performance suitable for the musical ideas of various performances, and it is possible for the player to not select the ending pattern data particularly. ,
It is possible to shift from a normal pattern performance to a musically natural ending pattern performance. In particular, a plurality of normal patterns and ending patterns are prepared in one accompaniment style, and the transition is performed in the same accompaniment style, so that it is possible to generate a variety of and very natural accompaniment sounds. . Ma
Also, multiple normal patterns in one ending pattern
Acne data memory
Has more sets than the number of sets of ending pattern data
The normal pattern data of
Is limited by the number of ending pattern data
Free from many types of normal pattern data
Automatic accompaniment with one normal pattern data
To produce more varied and natural accompaniment sounds.
Can be made.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram showing an entire electronic musical instrument having an automatic accompaniment device according to the present invention.

This electronic musical instrument includes a left keyboard 11, a right keyboard 12, and an operation panel 20. The left keyboard 11 includes a plurality of keys and is used for playing a chord. The right keyboard 12 also includes a plurality of keys, and is used for melody performance.
Pressing and releasing of these keys is detected by opening and closing a plurality of key switches provided for each key in the key press detection circuit 13.

As shown in FIG. 3, the operation panel 20
A large number of tone selection switch groups 21, a large number of accompaniment style switch groups 22, an up switch 23a, a down switch 23b, a start switch 24a, a stop switch 2
4b, four normal pattern switches 25a to 25
d, three special pattern switches 26a to 26c, a switching condition switch 27, and six lamps 28a to 28f
Is provided.

The tone selection switch group 21 includes a violin,
Each switch corresponds to a plurality of tones such as a guitar and a piano, and each switch designates one of the plurality of tones for a melody tone from among the plurality of tones. The accompaniment style switch group 22 corresponds to each of a plurality of accompaniment styles such as march, waltz, rock, and the like, and each switch designates one of the plurality of accompaniment styles. Up switch 23a and down switch 23
b indicates that the tempo of the automatic accompaniment increases and decreases. The start switch 24a instructs the start of the automatic accompaniment, and the stop switch 24b instructs the stop of the accompaniment. Normal pattern switch 25a ~
Reference numeral 25d corresponds to each of the four normal patterns NOR1 to NOR4 (see FIG. 1), and each switch specifies one of the four normal patterns belonging to the specified accompaniment style. Special pattern switch 2
6a to 26c correspond to the three intro patterns INT1 to INT3 (see FIG. 1), respectively, and correspond to the first fill-in pattern FIL1, the second fill-in pattern FIL2, and the ending patterns END1 to END3 (see FIG. 1). Each switch designates one of the three intro patterns belonging to the designated accompaniment style, or designates one of the first, second fill-in pattern or ending pattern. The switching condition switch 27 determines whether to shift with a predetermined condition (shift at the first beat or odd-numbered beat) when shifting from the normal pattern to the fill-in pattern or the ending pattern,
It indicates whether to shift without any conditions. Lamp 28
a to 28f are each formed of a light emitting diode, a lamp 28a indicates that the intro pattern is being played, lamps 28b to 28e indicate that the first to fourth normal patterns are being played, And lamp 2
8f indicates that the ending pattern is being played. The operation of each of the switches 21 to 27 is detected by a switch operation detection circuit 20a, and each of the lamps 28a to 28f is connected to the display control circuit 20.
Lighting and turning off are controlled by b.

The key press detection circuit 13a, the switch operation detection circuit 20a, and the display control circuit 20b are connected to a bus 30. The bus 30 includes a tone signal forming circuit 40, a microcomputer unit 50, and an accompaniment data memory 60. It is connected.

The tone signal forming circuit 40 has a plurality of tone signal forming channels. Each tone signal forming channel is provided with a key code KC, tone number VOIN, and volume data supplied from the microcomputer unit 50 via the bus 30. VO
Based on control data such as L, key-on signal KON, piano,
In addition to forming a melody sound signal and accompaniment sound signal of a clarinet or the like whose pitch changes, a percussion sound signal (defined in this case as a part of the accompaniment sound signal) of a drum, cymbal or the like is formed and output. The output of the tone signal forming circuit 40 is connected to a speaker 42 via an amplifier 41.

The microcomputer unit 50 includes a bus 30
Memory 51, tempo clock generator 52, CPU 53 and working memory 5 connected to
Consists of four. The program memory 51 is constituted by a ROM and stores programs corresponding to the flowcharts shown in FIGS. The tempo clock generator 52 is constituted by a variable frequency oscillator, and generates a tempo clock signal at a cycle corresponding to control data representing a minute time ΔT supplied from the CPU 53 via the bus 30. CPU53
7 to 19 after the power switch (not shown) is turned on.
The program corresponding to the flowcharts shown in FIGS. 20 to 26 is continuously executed, the execution of the program is interrupted by the arrival of the tempo clock signal, and the program corresponding to the flowcharts shown in FIGS. The working memory 54 is constituted by a RAM, and temporarily stores data necessary for executing the program.

The accompaniment data memory 60 is constituted by a ROM, and includes a style table STLTBL and a section table SC.
Along with the TTBL and the performance data table PLDT, it also has an area for storing other accompaniment data.

As shown in FIG. 4, the style table STLTBL has a storage area STLTBL (STLN) corresponding to each accompaniment style.
Each storage area STLTBL (STLN) is specified by a style number STLN representing each accompaniment style. Each of these storage areas STLTBL (STLN) stores the number of bars BAR (SCTN), the number of beats MTR, the standard tempo STMP, and the section switching condition SCC for each section. Here, each bar number BAR (SCTN) indicates the number of bars in one cycle of the pattern for each section, and is designated by the section number SCTN representing 18 patterns for each accompaniment style. I have. In addition, section number
The SCTN indicates three intro patterns INT1 to INT3 by 0 to 2 as shown in FIG.
Represents the normal patterns NOR1 to NOR4, respectively.
Numeral 10 denotes four first fill-in patterns FIL1, 11 to 14 denote four second fill-in patterns FIL2, and 15 to 17 denote ending patterns END1 to END3. The number of beats MTR is the number of quarter notes in one bar, ie "3" for 3 beats
And in the case of quadruple, it is set to “4”. The standard tempo STMP indicates a standard tempo for each accompaniment style, that is, a standard number of quarter notes per minute. The switching condition SCC indicates the above condition when the condition is shifted from the normal pattern to the fill-in pattern or the ending pattern conditionally.
Indicates that the transition is realized when an odd-numbered beat arrives after the special pattern switches 26a to 26c are turned on, and "1" indicates that the shift is realized when the first beat arrives after the turn-on.

As shown in FIG. 5, the section table SCTTBL is divided into storage areas SCTTBL (STLN, SCTN) corresponding to each accompaniment style and each section, and each storage area SCTTBL (STLN, SCTN) has a style number. It is specified by STLN and section number SCTN. Each storage area SCTTBL (STLN, SCTN) has a track number TRKN (0 to
8) The bar number BAR and volume VOL are stored for each bar. The track number TRKN represents a chord component sound sequence from 0 to 5, 6 represents a bass tone sequence, and 7, 8 represent a percussion instrument tone sequence. The bar number BAR (TRKN) indicates the number of bars in one cycle of the sound sequence for each track, and the volume VOL indicates the relative volume of the sound sequence for each track.

As shown in FIG. 6A, the performance data table PLDT is divided into storage areas PLDT (STLN, SCTN, TRKN) corresponding to each accompaniment style, each section and each track. The PLDT (STLN, SCTN, TRKN) is specified by the style number STLN, section number SCTN, and track number TRKN. Each storage area PLDT (STLN,
SCTN, TRKN) stores a series of performance data strings including note data NOTE, timbre data TC, and bar line data BARL as time elapses for each track. As shown in FIG. 6B, the note data NOTE is composed of a set of data including an identification code, an event time EVT, a key code KC, a key touch KT, and a key-on time KOT. In this case, the identification code indicates that this set of data is note data NOTE, and the event time
EVT indicates the read timing of the same data NOTE as the time from the beginning of the bar, and key code KC indicates the pitch of the accompaniment sound in semitone intervals from the C sound based on the major chord (however, the KT represents the relative volume of each accompaniment sound, and key-on time KOT represents the duration of the accompaniment sound. Tone data
As shown in FIG. 6C, the TC is composed of a set of data including an identification code, an event time EVT, and a timbre number VOIN. In this case, the identification code indicates that this set of data is timbre data TC, the event time EVT indicates the read timing of the data TC by the time from the beginning of the bar, and the timbre number VOIN is It represents the timbre of the accompaniment sound (however, a percussion instrument sound represents a subtle change of the same sound). The bar line data BARL is composed of only an identification code indicating that the accompaniment sound sequence is a bar break of a bar. These performance data strings are arranged from the upper pattern to the lower pattern in FIG. 1 (in the intro pattern, the normal pattern, the first and second fill-in patterns, and the ending pattern, as the section number SCTN increases, respectively). , So that the automatic accompaniment is excited. As a result, the patterns connected by solid lines or broken lines in FIG. 1 correspond to each other.

In an area for storing other accompaniment data,
A chord detection table for detecting a chord and a conversion table for converting an accompaniment tone into a constituent tone of the chord based on the detected chord are provided.

Next, the operation of the above embodiment will be described with reference to flowcharts.

First, when a power switch (not shown) is turned on, the CPU 53 starts execution of a program in step 100 of FIG. Set. In the initial setting process, the section number SCTN is set to “3” indicating the normal pattern NOR1 (see FIG. 1).

After this initialization, the CPU 53 proceeds to step 1
A circulation process consisting of steps 04 to 110 is executed, and step 10
4 detects the operation of any key of the left keyboard 11 and the right keyboard 12, and at step 108, the operation panel 2
Operation of any switch on 0 is detected. If any key is operated, the CPU 53 proceeds to step 1
Based on “YES” in 04, that is, determination that there is a key event, the “key event routine” of step 106 is executed. This "key event routine" includes steps 120 to 13 as shown in detail in FIG.
In this routine, the generation of a melody sound is controlled and the performance chord is detected in accordance with the performance of the left keyboard 11 and the right keyboard 12. When any switch on the operation panel 20 is operated, the CPU 5
3 executes a “switch event routine” in step 110 based on “YES” in step 108, that is, determination that there is a switch event. As shown in detail in FIG. 9, the "switch event routine" includes steps 140 to 166. In response to the operation of the switch groups 21 to 27, the melody tone is set and the accompaniment tone is set. Is controlled.

Next, the generation of the melody sound and the generation of the accompaniment sound will be described in detail in separate sections.

A. Generation of Melody Sound and Chord Detection When any key of the left keyboard 11 and the right keyboard 12 is operated, as described above, the CPU 53 executes the processing of the “key event routine” (FIG. 8) in step 106. I do.
If any key of the right keyboard 12 is depressed, it is determined “YES” in steps 122 and 124, and a key-on process is executed in step 126. In this key-on process, a key code KC and a key-on signal KON representing the name of the depressed key are output to the tone signal forming circuit 40,
The forming circuit 40 forms a melody sound signal having a pitch represented by the key code KC, and outputs the signal to the speaker 42 via the amplifier 41. If any key on the right keyboard 12 is released, the process proceeds to step 122 where "YE
S "and" NO "in step 124, and a key-off process is executed in step 128. In this key-off process, a key code KC representing the name of the released key and a key-off signal KOF are output to the tone signal forming circuit 40, and the forming circuit 40 produces a melody tone having a pitch represented by the key code KC. Stop signal formation.
As a result, a melody sound is emitted from the speaker 42 according to the performance of the right keyboard 12. In this case, the tone color of the melody tone is selected by operating the tone color selection switch group 21, and when any one of the switch group 21 is operated, the CPU 53 executes the “main program” as described above. In step 110, the process of the "switch event routine" (FIG. 9) is executed. In this "switch event routine", based on the determination processing in step 142, the tone color number data VOIN representing the operated tone color selection switch 21 is output to the musical tone signal forming circuit 40 in step 144, and 40 controls the tone of the melody sound.

On the other hand, when any key on the left keyboard 11 is depressed or released, the CPU 53 proceeds to step 122 of the "key event routine" (FIG. 8) as described above.
O ", and a chord detection process is executed at step 130. In this process, the chord is detected by referring to the chord detection table in the accompaniment data memory 60 in accordance with the combination of keys pressed on the left keyboard 11, and the root and type of the detected chord are detected. Is stored as a chord root CRT and a chord type CTP.

B. Setting of Accompaniment Style, Tempo, and Switching Condition Flag When any one of the accompaniment style switch group 22, the up switch 23a, the down switch 23b, and the switching condition switch 27 on the operation panel 20 is operated, the CPU 53 executes the step as described above. At 110 (FIG. 7), the "switch event routine" (FIG. 9) is executed.

When the accompaniment style switch group 22 is operated, the CPU 53 executes a “style routine” in step 146 based on the determination processing in step 142 (FIG. 9). In this “style routine”, FIG.
0, as detailed in FIG.
Starting at 70, the number representing the accompaniment style switch 22 operated at step 172 is stored as the style number STLN, and at step 174 the accompaniment data memory 6
The standard tempo STLTBL (STLN) in the table STLTBL specified by the style number STLN is referred to by referring to the style table STLTBL in 0.STMP is read out and stored as the tempo TMP for determining the speed of the automatic accompaniment. . The standard tempo STLTBL (STLN) .STMP and tempo TMP represent the number of quarter notes per minute.

Next, at step 176, the tempo TMP
By executing the calculation shown in the following equation 1 using
T is calculated, and data representing the same time ΔT is output to the tempo clock generator 52 in step 178.

[0038]

ΔT = (60 × 10 ³ ) / (TMP × 24) In this case, the short time ΔT represents a time corresponding to 1/24 of a quarter note in a unit of millisecond, and The generator 52 supplies a tempo clock signal to the CPU 53 every minute time ΔT.

After setting the tempo, steps 180 and 1
At 82, the style table (FIG. 4) is referred to and the number of beats STLTBL (STLN) .MTR and the number of measures STLTBL (STLN) .BAR specified by the style number STLN and section number SCTN.
(SCTN) is read from the same table, and one measure time BTM and one pattern time PTM are calculated by executing the respective operations shown in the following equation 2, and the execution of the "style routine" is terminated in step 184.

[0040]

(2) BTM = 24 × STL (STLN) .MTR PTM = BTM × STLTBL (STLN) .BAR (SCTN) In this case, one bar time BTM is a tempo clock signal counted during one bar in the selected accompaniment style. And one pattern time PTM represents the number of tempo clock signals counted during one pattern in the designated section number SCTN of the same style.

When the up switch 23a or the down switch 23b is operated, the CPU 53 executes a "tempo routine" in step 148 based on the determination processing in step 142 (FIG. 9). In this "tempo routine", as shown in detail in FIG.
Its execution starts at step 190 and step 19
At 2, it is determined whether the up switch 23a has been operated or the down switch 23b has been operated. If the up switch 23a is operated, “1” is added to the tempo TMP in step 194 based on the determination of “YES” in step 192, and if the down switch 23b is operated, the step "NO" in 192
In step 196, "1" is subtracted from the tempo TMP. These steps 194, 196
After the processing in step 198 and step 200, the processing similar to the processing in steps 176 and 178 described above is performed.
T is changed according to the tempo TMP, and control data representing the changed minute time ΔT is output to the tempo clock generator 52. Thereby, the standard accompaniment speed of the selected accompaniment style is increased by the up switch 23a.
By the operation of the down switch 23b and the operation of the down switch 23b, it is changed according to the preference of the player.

When the switching condition switch 27 is operated, the CPU 53 inverts the switching condition flag CNGF for each of the operations at step 148 based on the determination processing of step 142 (FIG. 9) ("1"). To "0" or from "0" to "1"). In this case, the switching condition flag CNGF indicates “0” indicating an unconditional transition mode, that is, a mode in which transition from the normal pattern to the fill-in pattern or the ending pattern immediately after the special pattern switches 26a to 26c are turned on, and “1”. This represents a conditional transition mode, that is, the transition of the pattern after the next odd-numbered beat or the first beat (determined in accordance with the section switching condition SCC) after the special pattern switches 26a to 26c are turned on.

C. Normal Pattern Performance To perform a normal pattern performance, the player selects a desired accompaniment style with the accompaniment style switch group 22 on the operation panel 20 and selects a desired normal pattern with the normal pattern switches 25a to 25d. Then, the start switch 24a is operated.

The case where the accompaniment style switch group 22 is operated is as described above. By this operation, the style number STLN, the period of the tempo clock signal of the tempo clock generator 52, one bar time BTM and one pattern time PTM is set according to the selected accompaniment style.

Normal pattern switches 25a to 25d
When any one of them is operated, the CPU 53 proceeds to step 14
Based on the determination process of FIG. 2 (FIG. 9), a “normal pattern routine” is executed in step 152. In this "normal pattern routine", as shown in detail in FIG. 6 (displayed at the upper left of each box in FIG. 1) is temporarily stored as a variable i. Next, in step 214, it is determined whether the automatic accompaniment is stopped or in operation based on the run flag RUN. The run flag RUN indicates “stop” by “0” and “
1 indicates that the operation is in progress. At this time, the automatic accompaniment is stopped and the flag RUN is set to "0". The section number SCTN is set in the variable i. After setting this section number SCNT, step 2
At 26, the “pattern switching routine” is executed,
In step 228, the execution of the “normal pattern routine” ends.

The "pattern switching routine" is described in FIG.
Steps 370-394, as shown in detail in FIG.
However, the processing in steps 372 to 390 is necessary during the operation of the automatic accompaniment, and is not necessary before the operation of the automatic accompaniment. After the processing in steps 372 to 390, a “ramp routine” is executed in step 392. As shown in detail in FIG. 18, the "ramp routine" is started to be executed in step 400, and the CPU 53 turns off all the lamps 28a to 28f once in step 402, and Based on the section number SCTN (= 3 to 6), "YES" is determined in any one of the steps 406 to 412, and the steps 418 to 42 are performed.
In any one of the steps 4, any one of the lamps 28b to 28e is turned on. Thereby, the normal pattern NO
The lamps 28b to 28e are turned on in response to the selection of R1 to NOR4.

Next, when the start switch 24a is operated, the CPU 53 sets the run flag RUN to "1" in step 156 based on the determination processing in step 142 (FIG. 7).
, And a “pattern activation routine” is executed in step 158. As shown in detail in FIG. 19, the execution of this “pattern activation routine” is started in step 430, and in step 432, the current timing CTIM, current beat CBET, current bar CBAR and current track bar are executed. CRTB (0) to CRTB (8) are set to the initial value “0”. Note that each of these variables CTIM, C
BET, CBAR, CRTB (0) to CRTB (8) represent the progression position of the automatic accompaniment, and the current timing CTIM is a progression timing 0 to 95 (4
Time signature) and 0 to 71 (three time signatures). Current beat CB
ET is progressing beat 0-3 (4 beats), 0-2 in each bar
(3 beats), and the current bar CBAR indicates the progressing bars 0 to n-1 (n is the number of bars corresponding to the repetition period of each pattern) in each pattern. Current track bar
CRTB (0) to CRTB (8) represent the progress bar numbers 0 to n-1 (n is the number of bars corresponding to the repetition period of each track) for each track 0 to 8. Each of these variables CTIM, CBET, CBAR, CRTB (0) ~
After setting the initial value of CRTB (8), the process of “pattern switching routine” is executed in step 434, and
At 36, the execution of the "pattern activation routine" ends.

The execution of the "pattern switching routine"
As described above, starting at step 370 of FIG.
In Steps 372 to 376, the one pattern time PTM, the current bar CBAR, and the current track bars CRTB (0) to CRTB (8) are updated by executing the calculation of the following Expression 3.

[0049]

PTM = BTM × STLTBL (STLN) .BAR (SCTN) CBAR = CBAR mod STLTBL (STLN) .BAR (SCTN) CTRB (i) = CBAR mod SCTTBL (STLN, SCTN, i) .BAR In Equation 3, the operator mod means to calculate a remainder obtained by dividing a value before the operator mod by a value after the operator mod.
The variable i changes from 0 to 8. As a result, the one pattern time PTM is set to a value corresponding to the section number SCTN set according to the operation of the normal pattern switches 25a to 25d. In this case, the current bar CBAR and the current track bar CRTB (0) to CRT
Since B (8) has been set to “0” by the above-described initial value setting, it is maintained at “0” also by the above calculation.

Next, in step 378, the current track bars CTRB (0) to CTRB (8) and the current timing CTIM
Based on the style number STLN and section number SCTN
Storage area PLDT (STLN, SC
Nine pointer values for reading performance data in TN, 0) to PLDT (STLN, SCTN, 8) are respectively changed. In this case, since the current track bars CTRB (0) to CTRB (8) and the current timing CTIM are “0”, each pointer points to each of the storage areas PLDT (STLN, SCTN, 0) to PLDT (STLN, SCTN, 8). ) Is set to a value indicating the start address. After the processing in step 378, the section switch flag is set in step 380.
SCSW is initialized to “0”, and “Y”
ES ”, that is, it is determined that the section number SCTN satisfies 3 ≦ SCTN ≦ 6, and after the processing in step 392, the processing of the“ pattern switching routine ”ends in step 394. In this case as well, the lighting and extinguishing of the lamps 28a to 28e are controlled by executing the "ramp routine" in step 392. ~ 28e
Is not changed.

In such a state, the tempo clock signal generator 52 outputs the tempo clock signal to the CP every minute time ΔT.
When output to U53, the CPU 53 outputs the same minute time ΔT
Every time the execution of the “main program” is interrupted, the “interrupt program” is started to be executed in step 440 of FIG. 20, and “YES” is determined in step 442 based on the run flag RUN set to “1”. Is determined, and the processing of steps 444 to 458 is executed. Step 44
In step 4, the "conditional switching routine" shown in FIG. 21 is executed. In step 462, "YES", that is, it is determined that the section number SCTN satisfies 3 ≦ SCTN ≦ 6, and in step 464 “ "NO", that is, it is determined that the section switch flag SCSW is not "1", and this "conditional switching routine" is terminated in step 484. In this case, the substantial processing of this routine is not performed.

Next, the CPU 53 executes steps 446, 4
By the processing of 50 and 452, the variable i is set to “0” by “1” at a time.
In step 448, the “reproduction routine” is repeatedly executed while increasing from “1” to “8”. This “reproduction routine” is performed at step 530 as shown in detail in FIG.
In step 532, the pointer is indicated by a pointer for each track from each storage area PLDT (STLN, SCTN, i) specified by the style number STLN, section number SCTN, and variable i indicating each track. The set of performance data is sequentially read out, and the processing after step 534 is executed.

In this case, if the set of performance data is the bar line data BARL, "YES" is determined in the step 534, the pointer of the track is advanced in the step 544, and the program is again executed in the step 53.
2 and the next performance data on the same track is read. Also, the set of performance data is the note data NO.
If it is TE and the event time EVT is equal to the current timing CTIM, steps 534, 536, 5
At 38, “NO”, “YES”, and “YES” are determined, respectively, and at step 540, the processing of the “note routine” is executed to control the generation of musical tones. The above 1
If the set of performance data is timbre data TC and its event time EVT is equal to the current timing CTIM,
In steps 534, 536, and 538, "N
O ”,“ YES ”,“ NO ”,
At 2, the tone color of the generated musical tone is controlled. After the processing of steps 540 and 542, the pointer of the track is advanced at step 544, and the program returns to step 532 again to read the next performance data of the same track. On the other hand, if the set of performance data is the note data NOTE or the tone color data TC, and their event time EVT is equal to the current timing CTIM, both of them are "NO" in steps 534 and 536.
Is determined, and the "reproduction routine" ends in step 546. Thereby, the storage areas PLDT (STLN, SCTN, 0) to PLD
Note data NOTE and timbre data TC stored in T (STLN, SCTN, 8) are sequentially read out according to the instruction of the pointer,
The event time EVT is the current timing CTIM
Each time is equal to, the generation of a musical tone and the tone color of the generated musical tone are controlled.

Next, generation of these tones and control of the tone color of the generated tones will be described in detail. First, the control of the timbre will be described. In the process of step 542, the timbre number VOIN and the variable i in the timbre data TC are output to the tone signal forming circuit 40. Tone signal forming circuit 40
Uses the tone number VOIN and the variable i to assign the tone of the accompaniment tone of the track specified by the variable i to the tone number.
Controls the tone specified by VOIN.

The "note routine" of step 540 is started in step 550 of FIG.
Is less than or equal to “6”, “YES” in step 552
And the key code KC constituting the note data NOTE read out in step 554 corresponds to the chord played on the left keyboard 11 based on the detected chord root CRT and chord type CTP. It is converted into a key code KC representing a chord component sound or a bass sound. Also, the variable i is “7”
If so, the determination at step 552 is “NO” and the conversion process at step 554 is not performed. this is,
This is because the variable i indicates a track of a constituent sound sequence of a chord and a base sound sequence by 0 to 6 and a percussion sound sequence by 7 and 8 (see FIG. 5). Next, step 55
At 6,558, style number STLN, section number SC
Volume data VOL in section table SCTTBL (STLN, SCTN, i) specified by TN and variable i (track number)
The volume VOL and the key-off time KOFT (i) are calculated by executing the calculation of the following Expression 4 based on the key-on time KOT and the key touch KT (see FIG. 6) in the read note data NOTE (see FIG. 5). Is done.

[0056]

VOL = SCTTBL (STLN, SCTN, i) .VOL + KT KOFT (i) = TIME + KOT In this case, the time TIME is a “count routine” to be described later.
Represents the absolute elapsed time for sequentially counting up from 0 to 5000, and the key-off time KOFT (i) defines the end timing of the generated musical tone based on the absolute time. After the processing of the step 558,
When the key-off time KOFT (i) becomes larger than “5000” as a result of the above Expression 4 by the processing of steps 560 and 562, the value of the same time KOFT (i) is changed to “500”.
By subtracting “0”, the value is changed to a value less than the same value “5000”.

Next, at step 564, the converted key code KC (the key code KC which is not converted if the variable i is 7, 8), the volume VOL, the key-on signal KON, and the variable i are stored in the tone signal forming circuit. 40, and the "note routine" ends in step 566. The tone signal forming circuit 40 forms an accompaniment sound signal of the track specified by the variable i based on the key code KC, the volume VOL, the key-on signal KON and the variable i, and outputs it to the speaker 42 via the amplifier 41. Begin to. In this case, the pitch of the accompaniment sound signal is specified by the key code KC (when the variable i is 7 or 8, the type of the percussion sound is specified by the key code KC). The tone color of the accompaniment sound signal is set by the tone color number VOIN, and the volume of the accompaniment sound signal is specified by the volume VOL. As a result, a series of accompaniment sounds composed of chord constituent sounds, bass sounds, and percussion sounds are emitted from the speakers 42.

Returning again to the "interrupt program" in FIG. 20, after the processing of the above steps 446 to 452,
At step 454, a “key-off routine” is executed.
At step 456, a “count routine” is executed. The "key-off routine" includes steps 570 to 578, as shown in detail in FIG.
At ~ 576, the key-off time KOFT (i) that matches the time TIME is searched while changing the variable i from 0 to 8, and as a result, the variable i and the key-off signal relating to the matching key-off time KOFT (i) are converted to a tone signal. Output to the forming circuit 40.
Since the musical sound signal forming circuit 40 ends the formation of the accompaniment sound signal of the track represented by the variable i, the sounding of the accompaniment sound corresponding to the signal from the speaker 42 ends.

The "count routine" is shown in detail in FIG. 26, and its execution is started at step 580.
By the processing of steps 582 and 588, the time TIME and the current timing CTIM are counted up by “1”, and when the time TIME reaches “5000” by the processing of steps 584 and 586, the time TIME is cleared to “0”,
Also, the current timing CTIM is determined in steps 594 and 596.
Is cleared to "0" when the one-measure time BTM has been reached. As a result, every time the tempo clock signal generator 52 generates a tempo clock signal, that is, each time a quarter note is divided into 24, the time TIME is sequentially increased by “1” from “0” to “4999”. The value of "4999" has no meaning, and any value may be used as long as it is extremely large as compared with other variables indicating time. The current timing CTIM ranges from “0” to “95” (3
In the case of a beat, it increases by "1" from "0" to "71". Also, the current beat CBET is calculated in step 590.
By the processing of steps ５ to 596, the value is increased by “1” from “0” to “3” (from “0” to “2” in the case of triple time) for each beat (quarter note length) in each bar section. . The current bar CBAR performs one bar time BTM over one cycle of the pattern specified by the style number STLN and the section number SCTN by the processing of steps 594, 598 to 602.
Each time, from “0”, the number of measures “STLTBL (STLN) .BAR (SCTN) −
"1" to "1".

As described above, by operating the accompaniment style switch group 22, the normal pattern switches 25a to 25d and the start switch 24a, the accompaniment style and the normal patterns NOR1 to NOR4 are designated, and the automatic accompaniment starts to operate. Each time the tempo clock signal generator 52 generates a tempo clock signal (each time a quarter note is divided into 24), an "interrupt program" is executed.
The current timing CTIM, current beat CBET, and current bar CBAR are sequentially updated, and the performance data in the accompaniment data memory 60 is read to control the sounding of the accompaniment sound in the normal pattern.

During the production of the accompaniment sound, the stop switch 2
4b is operated, the CPU 53 proceeds to step 142
Based on the determination processing (FIG. 7), the run flag RUN is changed to “0” in step 160 and the section number is changed.
The SCTN is initialized to "3", the "ramp routine" (FIG. 18) described above is executed in step 162, and the formation of the accompaniment sound signal being formed in the tone signal forming circuit 40 is stopped in step 164. Control. As a result, in the "interrupt program" (FIG. 20), it is determined in step 442 that "NO", that is, the run flag RUN is not "1", and the processing of steps 444 to 456 is not executed. Current timing CTI
M, the current beat CBET and the current bar CBAR are no longer updated, and the sounding of the accompaniment sound is no longer controlled. Also, the initialization of the section number SCTN to “3” and the execution of the “ramp routine” cause the lamp 28
b lights up.

D. Shift from Intro Pattern to Normal Pattern While the automatic accompaniment is stopped (when the run flag RUN is "0"), if any of the special pattern switches 26a to 26c is operated, the CPU 53 proceeds to step 142 (FIG. 9). In step 154, a "special pattern routine" is executed based on the determination processing of ()). In this "special pattern routine", as shown in detail in FIG.
Its execution is started in step 230 and step 23
At 2, it is determined which of the special pattern switches 26a to 26c has been operated.

If the special pattern switch 26a has been operated, the "first special pattern routine" is executed in step 234 by the determination processing in step 232. This "first special pattern routine" is started in step 250 and "NO" in step 252, that is, the run flag RU, as shown in detail in FIG.
It is determined that N is not "1", the run flag RUN is changed to "1" in step 254, and the section number SCTN is set to "0". In step 256, the "pattern activation routine" (FIG. 19) Is executed. Also,
When the special pattern switch 26b is operated, the "second special pattern routine" (FIG. 15) is determined in step 236 by the determination processing in step 232 (FIG. 13).
Is executed, and by the processing of steps 290 to 296,
The run flag RUN is changed to "1", the section number SCTN is set to "1", and the "pattern start routine" (FIG. 19) is executed. Further, when the special pattern switch 26c is operated, the "third special pattern routine" (FIG. 16) is executed in step 238 by the judgment processing in step 232, and the processing in steps 330 to 336 is executed. Run flag RUN is
"1" and section number SCTN is "2"
And "Pattern activation routine" (FIG. 19)
Is executed.

In the "pattern activation routine", as described above, the current timing CTIM, current beat CBET, current bar CBAR, and current track bars CRTB (0) to CRTB (8) are set to the initial value "0". At the same time, a “pattern switching routine” (FIG. 17) is executed. In this "pattern switching routine", as in the case described above, one pattern time PTM and a pointer for each track are set according to the style number STLN and section number SCTN, and the current bar CBAR and the current track bar CRTB (0) are set. ~ CRTB (8) is set to “0”,
In addition, the section switch flag SCSW is set to “0”.

In this case, the section number SCTN
Is set to 0 to 2 so that step 38 in FIG.
2 is determined to be “NO”, and in Steps 384 and 386, the calculation of the following Expression 5 is executed, and the remaining time RTIM representing the time from the switching to the special pattern to the end of the same pattern is determined. An end time ETIM representing the end time point in absolute time is calculated.

[0066]

[Expression 5] RTIM = PTM−CBAR × BTM−CTIM ETIM = TIME + RTIM In this case, the current timing CTIM and the current bar CB
Since AR is initially set to “0” by the processing of the “start routine”, the remaining time RTIM is set to the intro pattern IN.
One pattern time PTM of T1 to INT3 (section number SCTN = 0 to 2) is reached, and the end time ETIM is a time obtained by adding the one pattern time PTM to the current time. It should be noted that this end time ETIM is the result of the above calculation "500
If it is equal to or greater than "0", "5000" is subtracted from the same time ETIM by the processing of steps 388 and 390.

Next, at step 392 of the "pattern switching routine", a "ramp routine" (FIG. 18) is executed. In this “ramp routine”, since the section number SCTN is set to 0 to 2, step 4
By the processes of 02 to 416, lighting of only the lamp 28a indicating the intro pattern is controlled.

In this state, the tempo clock signal generator 52 outputs the tempo clock signal to the CP every minute time ΔT.
When output to U53, as described above, the CPU 53 interrupts the execution of the "main program" at the same minute time ΔT and executes the "interrupt program" of FIG.
In the "interrupt program", the run flag RUN is set to "1", so that the automatic accompaniment starts to operate, and the time TIME, the current timing CTIM, the current beat CBET are executed by the processing of the "count routine" (FIG. 26). And the current bar CBAR are sequentially updated, and the performance data in the accompaniment data memory 60 is read out by the processing of the “reproduction routine” (FIGS. 23 and 24) and the “key-off routine” (FIG. 25), and the intro pattern Accompaniment sounds are pronounced. The intro pattern in this case is the special pattern switches 26a to 26
Intro patterns INT1 to INT3 corresponding to 6c (SCTN = 0
2).

On the other hand, during the performance of the intro patterns ITN1 to ITN3, since the section number SCTN is set to 0 to 2, the "conditional switching" executed in step 444 of the "interrupt program" (FIG. 20) In the “routine” (FIG. 21), “N
O ", that is, it is determined that the section number SCTN is not 3 ≦ SCTN ≦ 6, and it is determined in step 480 whether or not the time TIME is equal to the set end time ETIM. If one pattern time PTM has not elapsed from the start of the performance of the intro pattern, the result of the determination in step 480 is “NO”, and the performance of the intro pattern is continued.
When the one pattern time PTM has elapsed, the step 4
Based on the determination of “YES” in 80, step 48
At 2, the "special pattern switching routine" (FIG. 22) is executed.

The execution of the “special pattern switching routine” is started in step 490, and is executed in step 492.
Is determined as "NO" based on the section switch flag SCSW being "0", and "YES" based on the section number SCTN being 0 to 2 in step 496.
Is determined, and in step 498, the section number SCTN
Is added to "3". As a result, section number SCTN
Is "0", the same number SCTN is changed to "3", and if the section number SCTN is "1", the same number
SCTN is changed to “4” and section number SCTN is “2”
If so, the same number SCTN is changed to "5". After the processing in step 498, a “pattern switching routine” (FIG. 17) is executed in step 512. In this case, the current timing CTIM, the current beat CBET, and the current bar CBAR are initially set to “0” by the processing of the “count routine” (FIG. 26) when the time TIME matches the end time ETIM. Track pointer is style number STLN and section number
The storage area PLDT (STLN,
SCTN, i), and the section number SCTN (=
Normal pattern NOR1 to NOR3 specified by 3 to 5)
Will start playing from the beginning. Also, by executing the “ramp routine” (FIG. 18), the section number SC
One of the lamps 28b to 28d corresponding to TN (= 3 to 5) is turned on.

As described above, when any one of the special pattern switches 26a to 26c is operated during the stop of the automatic accompaniment, as shown in FIG. Intro pattern INT1 to IN
The performance of T3 (section number SCTN = 0 to 2) is automatically started, and at the end of the same pattern INT1 to INT3, the normal patterns NOR1 to NOR3 (section number SCTN = 3)
5). As a result, the performer only selects one of the intro patterns INT1 to INT3, and the intro patterns INT1 to IN3 suitable for the normal patterns NOR1 to NOR3.
T3 can be automatically given.

On the other hand, the intro patterns INT1 to INT3
When any of the normal pattern switches 25a to 25d is operated during the performance of the "", the "normal pattern routine" of FIG. 12 is executed as described above. In this case, since the run flag RUN is set to "1" and the section number SCTN is set to 0 to 2, in step 222 the corresponding to the normal pattern switches 25a to 25d for which the next section number NSCTN is operated. Variable i
(= 3 to 6), and the section switch flag SCSW is set to “1”.

When the performance of one pattern of the intro pattern ends and the time TIME becomes equal to the end time ETIM, "YES" is determined in the step 480 of FIG. 21 and "special pattern switching" is performed in the step 482. Routine "(FIG. 22) is executed. In this case, in the “special pattern switching routine”, step 49 is executed.
"YES" at 2 that is, the section switch flag SC
It is determined that SW is "1", the section number SCTN is changed to the next section number NSCTN in step 494, and the "pattern switching routine" is executed in step 512. As a result, the intro pattern INT1 ~
When the performance of INT3 (section number SCTN = 0 to 2) is completed, the automatic accompaniment automatically shifts to the performance of the normal patterns NOR1 to NOR4 (section number SCTN = 3 to 6) selected by the player. Thus, the intro pattern INT1 ~
During the performance of INT3, the performer switches to normal pattern switch 2.
When 5a to 25d are operated, the automatic accompaniment is performed using the normal pattern NO selected by the player from the intro patterns INT1 to INT3.
Since the process shifts to R1 to NOR4, the automatic pattern shift as described above can be changed according to the player's preference.

When one of the special pattern switches 26a to 26c is operated during the performance of the intro patterns INT1 to INT3, the "special pattern routine" of FIG. The "first special pattern routine" in FIG. 14 and the "second special pattern routine" in FIG. 15 according to the switches 26a to 26c set.
Alternatively, the “third special pattern routine” of FIG. 16 is executed, and in steps 260, 300, and 340 of these “first to third special pattern routines”, the section number SCTN is set.
Are set to 0 to 2 and steps 278 and
At 318 and 358, a “pattern switching routine” is executed. As a result, the previously played intro patterns INT1 to INT3 are replaced by the intro patterns INT1 to IN corresponding to the operated special pattern switches 26a to 26c.
Switch to T3 immediately. When the pattern is switched, a “pattern switching routine” (FIG. 17)
By the processing of steps 374 to 378, the current bar
The CBAR, the current track bar CTRB (i) (i = 0 to 8) and the pointer for each track are changed to a value indicating the progress position of the intro pattern after switching, and
By the processing of 84 to 390, the end time ETIM is also changed to a value indicating the end time of the intro pattern after the switching. As a result, the intro patterns INT1 to IN
T3 is played from the middle and played for the remaining time RTIM of the same pattern INT1 to INT3.

E. Insertion of fill-in pattern During the performance of the normal patterns NOR1 to NOR4, when the special pattern switch 26a is operated, the CPU 53 executes step 154 based on the determination processing of step 142 (FIG. 9).
Then, the "special pattern routine" (FIG. 13) is executed, and the "first special pattern routine" of step 234 (FIG. 14) is executed based on the determination processing in step 232 of the "special pattern routine". In this case, the run flag RUN
Is set to “1” and the section number SC
Since TN is set to 3 to 6, steps 252 and 2
"YES", "NO", and "Y" at 58 and 262, respectively.
ES ”, and it is determined in step 264 whether or not the switching condition flag CNGF is“ 0 ”.

If the switching condition flag CNGF is set to "0" by operating the switching condition switch 27 (step 150 in FIG. 9), "YES" is determined in step 264, and the process proceeds to step 266. In step 27, “4” is added to the section number SCTN.
At step 8, the processing of the "pattern switching routine" is executed. As a result, the previous section number SCTN (= 3 to
6) are changed to 7 to 10, respectively. As shown in FIG. 1, the previous normal patterns NOR1 to NOR4 are replaced with four first patterns designated by new section numbers SCTN (= 7 to 10).
It is immediately switched to one of the fill-in patterns FIL1. Also in this case, as in the case described above, the switched first fill-in pattern FIL1 is played from the middle, and the same pattern FIL1 is played for the remaining time RTIM.

On the other hand, if the switching condition flag CNGF is set to "1" at the time of the determination at step 264 in FIG.
Is determined to be "NO", and the result of adding "4" to the section number SCTN in step 268 is the next section number.
As well as being set as NSCTN, the section switch flag SCSW is set to "1". As a result, in this case, when the special pattern switch 26a is operated, the performance of the normal patterns NOR1 to NOR4 continues without being switched. Then, when the “conditional switching routine” (FIG. 21) is executed in step 444 of the “interrupt program” in FIG. 20, step 4 in FIG.
If both are determined to be “YES” in 62 and 464 and the current timing CTIM does not become a multiple of “24”, that is, if it does not become the timing indicating the beginning of the beat, the determination in step 468 is “NO”. Based on
The performance of the normal patterns NOR1 to NOR4 still continues. If the current timing CTIM is a multiple of “24”, that is, a timing indicating the start of a beat, “YES” is determined in step 468, and the program proceeds to step 470 and subsequent steps.

In step 470, the switching condition STLTBL (STLN) .SCC stored in the style table STLTBL and specified by the style number STLN is read, and the condition STLTBL (STLN) .SCC is set to "0". It is determined whether there is. This switching condition STLTBL (STLN) .SCC is "0"
Indicates that pattern switching is allowed on odd-numbered beats (1st or 3rd beat), and that "1" indicates that pattern switching is allowed on only the 1st beat. If (STLN) .SCC is “0”, it is determined in step 472 whether the remainder obtained by dividing the current beat CBET by “2” is “0”, that is, the normal pattern NOR1
It is determined whether or not the performance of NOR4 is the first beat or the third beat. If the condition STLTBL (STLN) .SCC is "1", the current timing CTIM is set to "0" in step 474. It is determined whether or not there is, that is, whether or not the performance of the normal patterns NOR1 to NOR4 is the first beat. As a result of the determination, the switching condition STLTBL (STLN) .SCC is “0” and the remainder obtained by dividing the current beat CBET by “2” is “0”, or the switching condition STLTBL (STLN). SCC
Is “1” and the current timing CTIM is “0”
If so, in step 476 the next section number NSCTN
Is set as section number SCTN, and step 47
At step 8, the "pattern switching routine" is executed. Otherwise, the processing at steps 476 and 478 is not executed and the "conditional switching routine" ends at step 484. As a result, the switching condition flag
When CNGF is set to "1", when the performance of the current normal patterns NOR1 to NOR4 reaches the odd-numbered beat or the first beat according to the switching condition STLTBL (STLN) .SCC for each accompaniment style, Automatic accompaniment is normal pattern NOR1-NOR4
To the first fill-in pattern FIL1.
In this case, as in the case described above, the switched first fill-in pattern FIL1 is played for the remaining time RTIM.

As described above, regardless of whether the switching condition flag CNGF is “0” or “1”, when the first fill-in pattern is played for the remaining time RTIM, the time TIME is changed. The end time ETIM is equal, and based on the determination of “YES” in step 480 of FIG. 21, a “special pattern switching routine” (FIG. 22) is executed in step 482. In this case, in the “special pattern switching routine”, steps 492 and 4
"NO", "NO", "YE" at 96,500
S ”, and the section number SC
“4” is subtracted from TN, and the process of “pattern switching routine” is executed in step 512.
As a result, the previous section number SCTN (= 7 to 10)
Are returned to 3 to 6, respectively, and the previous normal patterns NOR1 to NOR4 are played again as shown in FIG.

As described above, the normal patterns NOR1 to NOR4
By operating the special pattern switch 26a during the performance of (section number SCTN = 3 to 6), the performances of the four first fill-in patterns FIL1 suitable for the previous normal patterns NOR1 to NOR4 are automatically inserted. Therefore, it is possible to easily enjoy the performance of the fill-in pattern suitable for the musical composition. In this case, by operating the switching condition switch 27, the switching mode of the four first fill-in patterns FIL1 from the normal patterns NOR1 to NOR4 can be switched conditionally (the next odd-numbered beat or the first beat) or immediately. Is selected, and the player's will can be reflected in this fill-in performance.

When the special pattern switch 26b is operated during the performance of the normal patterns NOR1 to NOR4,
The CPU 53 executes the “special pattern routine” of FIG. 13 in the same manner as described above. In this “special pattern routine”, the “second special pattern routine” is executed in step 236 based on the determination processing in step 232.
(FIG. 15) is executed. Also in this case, the run flag RUN
Is set to “1” and the section number SC
Since TN is set to 3 to 6, steps 292 and 2
"YES", "NO", and "Y" at 98 and 302, respectively.
ES ”, and in step 304, it is determined whether or not the switching condition flag CNGF is“ 0 ”.

First, the "first special pattern routine"
The case where the switching condition flag CNGF is set to “0” as in the case of
At step 4, “YES” is determined, and at step 306, “8” is added to the section number SCTN, and at step 318, the processing of the “pattern switching routine” is executed. As a result, the previous section number SCTN (=
3 to 6) are changed to 11 to 14, respectively. As shown in FIG. 1, the previous normal patterns NOR1 to NOR4 are four second fill-in patterns specified by the new section numbers SCTN (= 11 to 14). Switch to one of FIL2 immediately. Next, the case where the switching condition flag CNGF is set to “1” will be described. The result of adding “8” to the section number SCTN in step 308 is determined to be “NO” in step 304, and The section number is set as the section number NSCTN, and the section switch flag SCSW is set to "1". As a result, in this case, when the special pattern switch 26b is operated, the performance of the normal patterns NOR1 to NOR4 is continued without being switched, and the condition (odd beat) determined by the switching condition STLTBL (STLN) .SCC is used. At the point of time (the first or first beat), the same patterns NOR1 to NOR4 are switched to the second fin pattern FIL2. In this case, as in the case described above, the switched second fill-in pattern FIL2 is played for the remaining time RTIM.

As described above, regardless of whether the switching condition flag CNGF is “0” or “1”, when the second fill-in pattern is played for the remaining time RTIM, the time TIME is changed. The end time ETIM is equal, and based on the determination of “YES” in step 480 of FIG. 21, a “special pattern switching routine” (FIG. 22) is executed in step 482. In this case, in the “special pattern switching routine”, steps 492 and 4
At 96, 500 and 504, "NO" and "N
O "," NO "," YES "
At 06, it is determined whether the section number SCTN is equal to or less than "12". If the section number SCTN is equal to or smaller than "12", "YES" is determined in step 506, "6" is subtracted from the section number SCTN in step 508, and the "pattern switching routine" is executed in step 512. The processing is executed. If the section number SCTN is "13" or more, "NO" is determined in step 506, "10" is subtracted from the section number SCTN in step 510, and step 5 is performed.
At 12, the processing of the "pattern switching routine" is executed. As a result, as shown in FIG.
If the second fill-in pattern FIL2 of SCTN = 11 or 12 is being played, the accompaniment pattern is the section number SC
When the normal pattern NOR3 and NOR4 of TN = 5 and 6 are transferred and the second fill-in pattern FIL2 of section numbers SCTN = 13 and 14 is played, the accompaniment pattern is the normal pattern of section numbers SCTN = 3 and 4. NOR1, NOR2
Move to

As described above, the normal patterns NOR1, NOR2
By operating the special pattern switch 26b during the performance of (section number SCTN = 3, 4), the section number SCTN suitable for the previous normal patterns NOR1 and NOR2.
The second fill-in pattern FIL2 of = 11, 12 is played, and then the automatic accompaniment pattern automatically shifts to the normal pattern NOR3, NOR4 (section number SCTN = 5, 6). By operating the special pattern switch 26b during the performance of the normal patterns NOR3, NOR4 (section numbers SCTN = 5, 6), the section numbers SCTN = 13, 14 suitable for the previous normal patterns NOR3, NOR4.
The second fill-in pattern FIL2 is played, and then the automatic accompaniment pattern is automatically changed to the normal pattern NOR1, NOR2
(Section number SCTN = 3, 4). As a result, the pattern of the automatic accompaniment can be automatically changed according to the flow of the music, so that a variety of accompaniment sounds can be enjoyed with a simple operation. Also in this case, the operation of the switching condition switch 27 causes the four second fill-in patterns from the normal patterns NOR1 to NOR4.
Whether the switching mode of FIL2 is switched conditionally (the next odd-numbered beat or the first beat) or switched immediately is selected, and the intention of the player can be reflected in this fill-in performance.

During the performance of the first fill-in pattern FIL1 (section number SCTN = 7 to 10) or the second fill-in pattern FIL2 (section number SCTN = 11 to 14),
When the normal pattern switches 25a to 25d are operated, the CPU 53 executes the "normal pattern routine" of FIG. 12 in the same manner as described above. In the "normal pattern routine", the normal pattern switch 25a in which the variable i is operated in step 212
After being set to a value (3 to 6) corresponding to ２５25d, “
Based on the run flag RUN set to "1" and the section number SCTN set to 7-14, in steps 214, 216, 218 and 220, "YE
S, "NO", "NO", "NO", the variable i is set as the next section number NSCTN in step 222, and the section switch flag SCSW
Is set to “1”. Thus, in this case, when the normal pattern switches 25a to 25d are operated, the pattern being played is not switched, and at the end of the first or second fill-in pattern FIL1, FIL2, FIG.
2 and the processing in steps 462, 480, and 482 of FIG.
The normal patterns NOR1 to NOR4 (section number SCTN) corresponding to the previously operated normal pattern switches 25a to 25d by the processing of steps 492 and 494 of the second step.
= 3 to 6). As a result, as described above, the automatic accompaniment pattern is determined from the first or second fill-in patterns FIL1 and FIL2 as a predetermined normal pattern NOR1.
Instead of shifting to NOR4, the performer can specify the normal patterns NOR1 to NOR4 to which the player will shift.

The above normal patterns NOR1 to NOR4
When the normal pattern switches 25a to 25d are operated during the performance of (section number SCTN = 3 to 6), the CPU
53 executes the “normal pattern routine” of FIG. 12 in the same manner as described above. In this "normal pattern routine", the variable i is set to a value (3 to 6) corresponding to the operated normal pattern switch 25a to 25d in step 212, and "YES" in step 214, that is, the run flag RUN is set to "1". ", The program from step 216 is executed. In this case, the operated normal pattern switches 25a to 25d operate the normal patterns NOR1 to NO
If it is the same as R4 and the variable i is equal to the section number SCTN, "YES" is determined in the step 216, and
No pattern switching process is performed. On the other hand, if the operated normal pattern switches 25a to 25d are different from the normal patterns NOR1 to NOR4 being played, both of the normal patterns NOR1 to NOR4 (section number) are determined based on the determination of “NO” in both steps 216 and 218. SCTN
= 3 to 6) are being played and the switching condition flag
Only when CNGF is "0", "Y"
ES ”, the section number SCTN is changed to the variable i in step 224, and
The "pattern switching routine" is executed, and the automatic accompaniment patterns are changed to the normal patterns NOR1 to NOR4 corresponding to the operated normal pattern switches 25a to 25d.
(Section number SCTN = 3 to 6). In other cases, that is, the normal pattern
If the switching condition flag CNGF is "1" even during the performance of NOR1 to NOR4 (section number SCTN = 3 to 6), "NO" is determined in step 220, and the variable i is determined in step 222. Is set as the next section number NSCTN, and the section switch flag SCSW is set to "
In this case, when the normal pattern switches 25a to 25d are operated, the pattern being played is not switched, and the above-described switching condition is set.
Normal patterns NOR1 to NOR4 (section number SC
TN = 3 to 6) are the normal patterns NOR1 to NOR4 corresponding to the operated normal pattern switches 25a to 25d.
(Section number SCTN = 3 to 6).

The first or second fill-in pattern FIL1, FIL2 (section number SCTN = 7-8, 11-1)
When the special pattern switches 26a and 26b are operated during the performance of 4), the CPU 53 executes the "special pattern routine" of FIG. 13 in the same manner as described above. In the "special pattern routine", when the special pattern switch 26a is operated, the "first special pattern routine" of FIG. 14 is executed, and the pattern being played is changed to the first pattern.
If the pattern is the fill-in pattern FIL1, pattern switching is not performed based on the determination of “YES” in step 270. However, if the pattern being played is the second fill-in pattern FIL2, the process proceeds to step 2 based on the determination of “NO” or “YES” in steps 270 and 272.
At step 74, “4” is subtracted from the section number SCTN, and at step 278, a “pattern switching routine” is executed, and the first fill-in pattern FIL1 is immediately switched to the second fill-in pattern FIL2. When the special pattern switch 26b is operated, the “second special pattern routine” of FIG. 15 is executed, and if the pattern being played is the second fill-in pattern FIL2,
The pattern is not switched based on the determination of “YES” in step 314, but if the pattern being played is the first fill-in pattern FIL1, step 310
In step 312, “4” is added to the section number SCTN based on the determination of “YES” in
In step 318, the "pattern switching routine" is executed, and the second fill-in pattern FIL2 is immediately switched to the first fill-in pattern FIL1.

F. Addition of Ending Pattern During the performance of the normal patterns NOR1 to NOR4, if the special pattern switch 26c is operated, the CPU 53 proceeds to step 154 based on the determination processing of step 142 (FIG. 9).
Executes the "special pattern routine" (FIG. 13), and executes the "third special pattern routine" of step 238 (FIG. 16) based on the determination processing of step 232 of the "special pattern routine". In this case, the run flag RUN
Is set to “1” and the section number SC
Since TN is set to 3 to 6, steps 332 and 3
"YES", "NO", and "Y" at 38 and 342, respectively.
ES ”, and in step 344, it is determined whether the switching condition flag CNGF is“ 0 ”.

If the switching condition flag CNGF is set to "0" by operating the switching condition switch 27 (step 150 in FIG. 9), "YES" is determined in the step 344, and the process proceeds to the step 346. “11” is added to the section number SCTN (however, if the section number SCTN is “3”, the same number SCTN becomes “1”
5 "), and the process of the" pattern switching routine "is executed in step 358. As a result, the previous section number SCTN (= 3 to 6) becomes 15 to
17 and the previous normal patterns NOR1 to NOR4 have new section numbers SCTN as shown in FIG.
(= 15 to 17), the ending pattern is immediately switched to the ending pattern END1 to END3, and only the lamp 28f is turned on. In this case, as in the case described above, the ending patterns END1 to END3 after the switching are performed.
Is played from the middle, and the same patterns END1 to END3 are played for the remaining time RTIM.

On the other hand, if the switching condition flag CNGF is set to "1" (step 150 in FIG. 9) at the time of the determination in step 344 in FIG.
Is determined to be "NO", and the result of adding "11" to the section number SCTN in step 348 is set as the next section number NSCTN (however, the section number SC
If TN is "3", the next section number NSCTN
Is set to “15”), and the section switch flag SCSW is set to “1”. As a result, in this case, when the special pattern switch 26c is operated, the performance of the normal patterns NOR1 to NOR4 continues without being switched. Then, when the “conditional switching routine” is executed in step 444 of the “interrupt program” in FIG. 20, steps 462 and 4 in FIG.
At 64, both are determined to be “YES”, and step 468 is performed.
The switching conditions STLTBL (STLN) .SCC
Are satisfied, the normal patterns NOR1 to NOR4 are automatically switched to the ending patterns END1 to END3. In addition,
In this case, as in the case described above, the ending patterns END1 to END3 after switching are played for the remaining time RTIM.

As described above, regardless of whether the switching condition flag CNGF is “0” or “1”, when the ending patterns END1 to END3 are played for the remaining time RTIM, the time TIME is set. Is equal to the end time ETIM, and based on the determination of “YES” in step 480 of FIG. 21, the “special pattern switching routine” (FIG. 22) is executed in step 482. In this case, in the “special pattern switching routine”, since the section switch flag SCSW is “0” and the section number SCTN is 15 to 17, steps 492 and 49
6, 500, and 504, all of which are determined to be "NO," and steps 514 to 518 are the same as when the above-described stop switch 24b is operated (see steps 160 to 160 in FIG. 9).
164) The run flag RUN is changed to "0", the section number SCTN is initialized to "3", the "ramp routine" is executed, and the mute processing is executed in step 518, so that the automatic accompaniment operation is started. Stop.

As described above, the normal patterns NOR1 to NOR4
By operating the special pattern switch 26c during the performance of, the ending patterns END1 to END3 suitable for the normal patterns NOR1 to NOR4 are played, and then the automatic accompaniment is stopped. As a result, ending patterns END1 to EN suitable for normal patterns NOR1 to NOR4 can be obtained with simple operation.
D3 can be added automatically. Also in this case, the normal pattern NOR1
~ NOR4 to ending pattern END1 ~ END3 can be switched conditionally (the next odd-numbered beat or the first beat) or can be switched immediately, and the player's will is determined by this ending pattern END1-END3. Can also be reflected in

When the special pattern switch 26c is operated during the performance of the first or second fill-in pattern FIL1, FIL2 (section number SCTN = 7-14), the CP
As described above, U53 executes the “special pattern routine” in FIG. 16 and adds “7” to the section number SCTN if the previous section number SCTN is 7 to 10 by the processing of steps 350 to 356. Same number SCTN 15 ~
17 (except that the previous section number SCTN was 7)
, Set section number SCTN to “15”),
And if the previous section number SCTN is 11 to 14, "3" is added to the section number SCTN and the same number SCTN is set to 15
１７17 (however, when the previous section number SCTN is 11, the section number SCTN is set to “15”), and in step 358, the “pattern switching routine” is executed. As a result, the first or second fill-in patterns FIL1 and FIL2 become ending patterns END1 to END3.
Can be switched instantly.

Further, such an ending pattern
During the performance of END1 to END3, the normal pattern switch 25
When a to 25d are operated, steps 218 and 218 in FIG.
By the processing of 224 and 226, the ending patterns END1 to END3 are operated by the operated normal pattern switch 2.
The normal patterns NOR to NOR4 corresponding to 5a to 25d are immediately switched. During the performance of the ending patterns END1 to END3, the special pattern switch 26a
Alternatively, when the special pattern switch 26b is operated, FIG.
By the processing of steps 272, 276, 278 of FIG. 4 or steps 314, 316, 318 of FIG. 15, the ending patterns END1 to END3 become the first fill-in pattern (section number SCTN = 8 to 10) or the second fill-in pattern (section number). SCTN = 12-14) is immediately switched.

In the above embodiment, predetermined performance data is stored in the accompaniment data memory 60. However, this memory 60 is constituted by a RAM.
The player may be able to write arbitrary data, or may be able to write arbitrary data from an external recording medium such as a magnetic tape or a magnetic disk.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram for explaining a switching mode of various patterns of automatic accompaniment.

FIG. 2 is an overall block diagram of an electronic musical instrument including an automatic accompaniment device according to an embodiment of the present invention.

FIG. 3 is a detailed view of an operation panel of FIG. 2;

FIG. 4 is a data format diagram of a style table in the accompaniment data memory of FIG. 2;

FIG. 5 is a data format diagram of a section table in the accompaniment data memory of FIG. 2;

FIG. 6 is a data format diagram of a performance data table in the accompaniment data memory of FIG. 2;

FIG. 7 is a flowchart of a “main program” executed by the microcomputer unit of FIG. 2;

FIG. 8 is a detailed flowchart of a “key event routine” of FIG. 7;

FIG. 9 is a detailed flowchart of a “switch event routine” of FIG. 7;

FIG. 10 is a detailed flowchart of a “style routine” of FIG. 9;

FIG. 11 is a detailed flowchart of a “tempo routine” of FIG. 9;

FIG. 12 is a detailed flowchart of a “normal pattern routine” in FIG. 9;

FIG. 13 is a detailed flowchart of a “special pattern routine” of FIG. 9;

FIG. 14 is a detailed flowchart of a “first special pattern routine” in FIG. 13;

FIG. 15 is a detailed flowchart of a “second special pattern routine” in FIG. 13;

FIG. 16 is a detailed flowchart of a “third special pattern routine” in FIG. 13;

FIG. 17 is a detailed flowchart of a “pattern switching routine” in FIGS. 12, 14 to 16, 19, 21, and 22.

FIG. 18 is a detailed flowchart of a “ramp routine” of FIGS.

FIG. 19 is a detailed flowchart of a “pattern activation routine” of FIGS.

FIG. 20 is a flowchart of an “interrupt program” executed by the microcomputer unit of FIG. 2;

FIG. 21 is a detailed flowchart of a “conditional switching routine” in FIG. 20.

FIG. 22 is a detailed flowchart of a “special pattern switching routine” in FIG. 21.

FIG. 23 is a detailed flowchart of a “reproduction routine” in FIG. 20.

FIG. 24 is a detailed flowchart of a “note routine” of FIG. 23.

FIG. 25 is a detailed flowchart of a “key-off routine” in FIG. 20.

FIG. 26 is a detailed flowchart of a “count routine” of FIG. 20.

[Explanation of symbols]

11 left keyboard, 12 right keyboard, 20 operation panel, 22
... accompaniment style switch group, 24a ... start switch, 24b ... stop switch, 25a-25d normal pattern switch, 26a-26c ... special pattern switch, 27 ... switching condition switch, 40 ... musical tone signal forming circuit, 50 ... microcomputer section, 60 ... accompaniment data memory.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-3483 (JP, A) JP-A-63-318598 (JP, A) Fully open 63-1797 (JP, U) Really open 199300 (JP, U) JP 60-28000 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) G10H 1/40 G10H 1/00 102 G10H 1/36

Claims (2)

(57) [Claims] 1. A method according to claim 1 , wherein the first and second accompaniment styles include
And at least the first and second normal pattern data
Accompaniment data stored with 2 fill-in pattern data
Mori and an accompaniment for selecting one of the plurality of accompaniment styles
Playing style selecting means, and the accompaniment style selected by the accompaniment style selecting means.
Of the first and second normal pattern data belonging to the
And a first normal pattern by the normal pattern selecting means.
Means for selecting the accompaniment style when the
First fill-in belonging to the accompaniment style selected by
Specify the pattern data and select the normal pattern
The second normal pattern data is selected by the selecting means
The accompaniment style selected by the accompaniment style selection means
Specify the second fill-in pattern data belonging to the tile
A fill-in pattern designating means, and a first fill-in pattern
Selection of accompaniment style when pattern data is specified
Second norma belonging to the accompaniment style selected by the means
File pattern data as return pattern data,
The second fill-in pattern is specified by the fill-in pattern designating means.
Accompaniment style when in-pattern data is specified
The first note belonging to the accompaniment style selected by the selecting means
-Specify normal pattern data as return pattern data
Return pattern designating means and a fill-in switch for instructing a fill-in pattern performance
If the first addition selected by the normal pattern selecting means
When repeatedly reading the second normal pattern data
Reading of the first or second normal pattern data
Responding to the operation of the fill-in switch during the
And specified by the fill-in pattern specifying means.
The first or second fill-in pattern data is converted into the first or second fill-in pattern data.
Read for a predetermined period instead of the second normal pattern data
The return pattern designating means after the elapse of the predetermined period.
First or is specified as the return pattern data by
Reading means for reading 2 normal pattern data; and said read first or second normal pattern data.
Accompaniment according to the first or second fill-in pattern data
Automatic accompaniment comprising an accompaniment sound signal generating means for generating a sound signal
Playing device. 2. A plurality of normal sets for each of a plurality of accompaniment styles.
From the number of sets of pattern data and normal pattern data
A small number of sets of ending pattern data
Remember, multiple normals in one ending pattern
By making the patterns correspond in common,
The normal pattern data is transferred to the plurality of ending patterns.
Accompaniment data memory corresponding to each turn data
And one of the plurality of accompaniment styles is selected.
An accompaniment style selecting means, and an accompaniment style selected by the accompaniment style selecting means.
Of multiple sets of normal pattern data belonging to
Normal to select a set of normal pattern data
Pattern selecting means, and the accompaniment style selected by the accompaniment style selecting means.
Out of multiple sets of ending pattern data belonging to
The one selected by the normal pattern selecting means
A set of patterns that are in correspondence with the set of normal pattern data
Ending pattern that specifies the ending pattern data
End designating means and an ending switch for instructing ending pattern performance.
Switch, and a pair of normal patterns selected by the normal pattern selecting means.
While repeatedly reading normal pattern data,
During reading of the same set of normal pattern data
In response to the operation of the ending switch,
Set of encoding patterns specified by the
After reading the reading pattern data for a predetermined period
Reading means for ending the reading, the read set of normal pattern data and the read set
Accompaniment sound signal according to the ending pattern data
An automatic accompaniment device including a generated accompaniment sound signal generating means.