JPH0764558A - Automatic accompanying device for electronic musical instrument - Google Patents

Abstract

PURPOSE:To provide an automatic accompanying device capable of easily enjoying music performance with automatic accompaniment with many ideas even by a beginner and selecting plural kinds of chord progression par one rhythm pattern. CONSTITUTION:The program No. of automatic chord progression data and the title of chord progression are displayed on a first display area 30a. When the rhythm pattern is selected by a rhythm selection switch 6, the program No. of the automatic chord progression data and the title of the chord progression initialized corresponding to every rhythm pattern are automatically displayed. Chord progression data desired to set can be selected arbitrarily by incrementing/decrementing the program No. of the automatic chord progression data by the (+) and (-) keys of a chord progression selection switch 10. The automatic accompaniment can be performed based on selected automatic chord progression data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic accompaniment device provided in an electronic musical instrument such as an electronic organ and an electronic keyboard.

[0002]

2. Description of the Related Art Conventionally, electronic keyboard musical instruments such as electronic organs, which have a so-called automatic accompaniment device, have been widely used.
In this automatic accompaniment device, data of an accompaniment pattern of about several measures is stored in advance for each rhythm such as rock or waltz, and by a predetermined switch operation,
It is possible to automatically play an accompaniment consisting of chords (chords) and bass tones at a desired rhythm.

By the way, in such an automatic accompaniment apparatus, when a chord progression is added to the accompaniment (that is, when the chord of the accompaniment is changed according to the progression of a piece of music), the player depresses the keyboard during the performance. I had specified the code. That is, as shown in, for example, Japanese Unexamined Patent Publication No. 4-30198, the type of chord (for example, C, Dm, E from the key depression operation by the player).
_The chord information indicating the chord name ( _7, etc.) is detected, and the pitch data of the accompaniment pattern is changed based on the chord information to perform automatic accompaniment with a desired chord.

However, such a conventional automatic accompaniment apparatus has a problem that it is difficult for a beginner to perform, because it is necessary to perform with both hands. That is,
When playing a melody along with the automatic accompaniment, it is necessary to play the melody with the right hand while pressing the keyboard to change the chord with the left hand. Needed.

On the other hand, in addition to the above-mentioned automatic accompaniment device,
For some rhythm patterns, data of short chord progressions of about several measures were stored in advance. In this case, since the chord progression of the automatic accompaniment automatically changes based on the chord progression data, the performer only has to play the melody with one hand in accordance with this, and there is an advantage that even beginners can easily perform. .

However, in such a conventional automatic accompaniment apparatus, a typical chord progression is only repeated many times in units of a few bars, but instead of being easy to play, it lacks interest as a song and is rich in taste. There was a problem that I couldn't play. Then, in order to solve such a problem, the applicant of the present application discloses, in Japanese Patent Application No. 5-206414, code information and timing data of code change,
The accompaniment pattern is switched based on the chord progression data read from the storage means for storing a plurality of chord progression data of the automatic accompaniment for each song, the pattern progression data for instructing the switching of the accompaniment pattern. As a result, we proposed an automatic accompaniment device for performing an automatic accompaniment of one song complete format with a predetermined chord progression.

With this device, the effect that even beginners can easily enjoy a musical performance with automatic accompaniment, which is rich in taste, was obtained. On the other hand, the above device has one chord progression data for one rhythm pattern. However, even if you have multiple chord progression data, even if you want to try various chord progressions, there is a new problem that there is no freedom.

The present invention has been made to solve this new problem, and even beginners can easily enjoy musical performances with automatic accompaniment, which are rich in taste, and a plurality of chord progressions can be selected for one rhythm pattern. As a result, it is an object of the present invention to provide an automatic accompaniment device for an electronic musical instrument, which is capable of playing one song under a plurality of rhythm patterns.

[0009]

An automatic accompaniment apparatus for an electronic musical instrument according to claim 1, which has been made to achieve the above object, has an accompaniment pattern storage means as shown by a solid line in the basic configuration diagram of FIG. In the automatic accompaniment apparatus for an electronic musical instrument, which performs automatic accompaniment with a predetermined chord, based on accompaniment patterns such as fill-in patterns and ending patterns stored in M1 and chord information indicating chord types, a plurality of the chord information And the timing data for code changes,
Chord progression data storage means M2 in which chord progression data of automatic accompaniment for each song, which includes pattern switching data for instructing switching of the accompaniment pattern, is stored corresponding to each rhythm pattern, and the chord progression data storage means. M
2, chord progression data selecting means M3 for selecting arbitrary data from a plurality of chord progression data stored in No. 2, and if no selection is made by the chord progression data selecting means M3, for each rhythm pattern described above. The corresponding chord progression data is read from the chord progression data storage means M2, while the chord progression data selection means M3 is read.
When the selected chord progression data is selected, the selected chord progression data is read from the chord progression data storage means M2, and the accompaniment pattern is switched based on the read chord progression data to achieve a predetermined chord progression. And an automatic accompaniment processing means M5 for performing an automatic accompaniment of one song complete format.

Here, the rhythm pattern is, for example, waltz, march, 8 beats or the like. Examples of the accompaniment pattern include a basic pattern that is normally played, an intro pattern that is played at the beginning of a song, a fill-in pattern that is inserted in the middle of the song, and an ending pattern that is played at the end of the song.

On the other hand, the automatic accompaniment apparatus for an electronic musical instrument according to a second aspect includes the broken line portion of the basic configuration diagram of FIG. 1, and the chord in the automatic accompaniment apparatus for an electronic musical instrument according to the first aspect. The progress data storage means M2 includes a chord progression name storage means M5 for storing a name corresponding to the content of the chord progression data stored therein, and the chord selected by the chord progression data selection means M3. It is characterized in that the chord progression name corresponding to the progress data is read from the chord progression name storage means M5 and displayed on the display means M6.

Here, as the name of the chord progression data stored in the chord progression name storage means M5, for example, a name indicating a rough genre such as rock, jazz, enka, folk song, nursery rhyme, Hawaiian, reggae, or the like, respectively. Is further subdivided into standard jazz, blue note jazz, modern jazz, Tohoku folk songs, Okinawan folk songs,
It is conceivable to give it a name such as the Andean folk song. Basically, it is sufficient to know the content of the chord progression, so if you have only one chord progression per genre, that genre name is acceptable, but if there are multiple types of the same genre, those It is more kind if the distinction can be judged from the name. In other words, rather than simply using jazz 1, jazz 2, and jazz 3, by assigning names such as standard jazz, blue note jazz, and modern jazz as described above, even a person who selects for the first time can easily judge the contents.

[0013]

In the automatic musical instrument playing apparatus of the present invention having the above-described structure, the accompaniment pattern storage means M1 stores accompaniment patterns such as an intro pattern, fill-in pattern, and ending pattern. The chord progression data storage means M2 includes a plurality of chord information indicating chord types, chord change timing data, and pattern switching data for instructing switching of accompaniment patterns. Progress data is stored for each rhythm pattern.

When any data is selected from the plurality of chord progression data stored in the chord progression data storage means M2 by the chord progression data selection means M3, the automatic accompaniment processing means M3 is selected. The chord progression data is read from the chord progression data storage means M2, accompaniment patterns such as an intro pattern, a fill-in pattern, and an ending pattern are switched based on the read chord progression data, and one song is completed in a predetermined chord progression. Perform the automatic accompaniment.

On the other hand, when the chord progression data selection means M3 is not selected, the automatic accompaniment processing means M3 reads the chord progression data corresponding to each rhythm pattern from the chord progression data storage means M2, and the read chord progression data. The accompaniment pattern is switched on the basis of, and the automatic accompaniment of one song complete format is performed with a predetermined chord progression.

That is, based on the chord progression data, for example, an automatic accompaniment of one song complete format is automatically performed with a predetermined chord progression, for example, a fill-in pattern is inserted in the middle of the intro pattern and ends with an ending pattern. Can be made. The chord progression data selected by the automatic accompaniment processing means M4 from the chord progression data storage means M2 is the chord progression data selection means M3.
Can be selected by the performer himself. Although a predetermined chord progression data is initially set for each rhythm pattern, if another chord progression data is selected by the chord progression data selecting means M3, automatic accompaniment is performed with the chord progression data.

Therefore, the performer does not need to press the keyboard to change the chord of the automatic accompaniment, and can concentrate on the performance of the melody, so that even a beginner can enjoy the performance easily. Moreover, the automatic accompaniment performance is a one-track completion type in which the patterns such as fill-in and ending are automatically switched and the chord progression changes automatically, making the music interesting and rich in taste. You can enjoy. Furthermore, the chord progression is not limited to a preset pattern, and another chord progression can be tried. That is, as a result of selecting a plurality of chord progressions for one rhythm pattern, one song can be played under a plurality of rhythm patterns.

According to the automatic accompaniment apparatus of claim 2,
The chord progression data storage means M2 is provided with a chord progression name storage means M5 for storing a name corresponding to the contents of the chord progression data stored therein, and the chord progression data selection means M3 causes the chord progression data to be selected. When data is selected, the chord progression name corresponding to the selected chord progression data is read from the chord progression name storage means M5 and displayed on the display means M6.

Therefore, it is possible to make a selection by referring to the contents of the chord progression by the chord progression name. For example, as mentioned above, as the name of the chord progression data,
If there is a classification such as standard jazz, blue note jazz, modern jazz, Tohoku folk song, Okinawan folk song, Andean folk song, etc. I can judge.

Therefore, for example, when the chord progression data initially set corresponding to the rhythm pattern jazz is standard jazz, the chord progression of another pattern is changed to the same jazz genre such as blue note jazz or modern jazz. can do. That is, a plurality of chord progressions can be selected for one rhythm pattern, and as a result, one song can be played under a plurality of rhythm patterns.

[0021]

Preferred embodiments of the present invention will be described below in order to further clarify the structure and operation of the present invention described above. Here, FIG. 2 is a block diagram showing an electrical configuration of the electronic keyboard 1 as an embodiment.

The electronic keyboard 1 of this embodiment is capable of performing automatic accompaniment based on accompaniment pattern data (described in detail later) such as basic patterns, fill-in patterns, ending patterns, etc., which are stored in advance in a memory. The keyboard 3 is provided with a large number of white keys and black keys, a panel 17 provided with various switches, a speaker 26, and the like.

The appearance of the panel 17 is shown in FIG. Panel 1
7 includes a large number of switches 5 to 11 and a display unit 30 including an LCD or the like. Multiple switches 5
A power switch 5 for turning the power on and off, a number of rhythm selection switches 6 for selecting accompaniment rhythms, an accompaniment mode switch 7 for setting the "auto accompaniment mode" for automatic accompaniment, and an "automatic accompaniment mode" 11 are provided. In "accompaniment mode",
Further, a chord progression mode switch 8 for selecting either "automatic chord progression mode" or "manual chord progression mode", a start switch 9 for instructing the start of automatic accompaniment, and a chord progression selection switch 10 for selecting chord progression, A tempo setting switch 11 for setting the tempo of automatic accompaniment is provided.

Here, the above-mentioned "automatic chord progression mode"
Is a mode in which an automatic accompaniment of one song can be performed. That is, in this mode, the start switch 9
Once you press to start the automatic accompaniment, the intro performance starts based on the automatic chord progression data (detailed later) stored in advance in the memory, and the chord progression changes automatically while the basic pattern accompaniment (specified The basic accompaniment by rhythm) is repeated, the fill-in pattern is inserted in the middle of the song, and the accompaniment automatically ends at the ending pattern.

Incidentally, the "manual chord progression mode" is a mode in which the performer gives a chord progression to the accompaniment by depressing the keyboard 3 to specify the type of chord, as in the conventional case. The rhythm patterns selectable by the rhythm selection switch 6 are, for example, "waltz", "march",
"Rock", "8 beats", etc.

Among the above-mentioned switches, the power switch 5, the rhythm selection switch 6, the accompaniment mode switch 7, the chord progression mode switch 8 and the start switch 9 are in their operating states (power on, automatic accompaniment on, automatic chord on). An LED or the like is lit to indicate that the operation is on or to start, so that the player can recognize the presence or absence of the operation.

In the first display area 30a of the display section 30, the program No. of the automatic chord progression data stored in the memory is stored. And the name of the chord progression is displayed. When a rhythm pattern is selected by the rhythm selection switch 6, the program number of the automatic chord progression data initially set corresponding to each rhythm pattern is set. And the names of chord progressions are automatically displayed. In Figure 3,
Program No. Is 33 and the chord progression name is "modern jazz". In this embodiment, when jazz is selected by the rhythm selection switch 6, the automatic progress data "33: Modern Jazz" is initially set and displayed. Then, by pressing the "+" key and "-" key of the chord progression selection switch 10, the automatic chord progression data program No. The chord progression data to be set can be arbitrarily selected by incrementing or decrementing. For example, when the "+" key is pressed once, the chord progression data "34: Blue Note Jazz" is selected.

On the other hand, in the second display area 30b of the display unit 30, the tempo of the automatic accompaniment is displayed by a speed symbol. Specifically, the number of quarter notes played in one minute is displayed.
In the case of, it is “80”. The displayed number can be incremented or decremented by the tempo setting switch 11.

Returning to FIG. 2, the main control portion of the electronic keyboard 1 is a CPU 12 for performing various calculations, a RAM 13 for temporarily storing various data, a program memory (ROM) 14 for storing control programs, and an accompaniment described later. A nonvolatile accompaniment pattern data memory 15 for storing pattern data, a nonvolatile automatic chord progression data memory 16 for storing automatic chord progression data, which will also be described later, and a keyboard 3.
Keyboard interface 20 to which is connected, each switch 5
To 11 and the display unit 30 are connected to a panel interface 21, a tone signal generation circuit (sound source) 22 and the like,
These are connected to each other via a data bus 23.

Here, the keyboard interface 20
Is a circuit for detecting key depression and key release for each key on the keyboard 3, and the panel interface 21 detects the on / off state of each of the switches 5 to 11 and outputs a display signal to the display unit 30. It is a circuit for doing.

The tone signal generation circuit 22 has a plurality of parallel tone generation channels, and outputs a voice signal based on the tone generation data input to each channel via the data bus 23. A speaker 26 is provided in the tone generation circuit 22 via an amplifier 25 that amplifies an audio signal output.
Are connected.

Next, the structure of the accompaniment pattern data stored in the accompaniment pattern data memory 15 will be described in detail. As shown in FIG. 4, the accompaniment pattern data is
For each rhythm pattern such as rock and waltz, the performance data of the basic pattern (basic pattern data; for example, 4 measures), the performance data of the intro pattern played at the beginning of the song (intro data; for example, 2 measures), the song Performance data of a fill-in pattern (fill-in data; for example, one bar) inserted in the middle of a song, and performance data of an ending pattern played at the end of a song (ending data;
For example, 2 bars). These data are provided with performance data for each part such as piano, strings, bass, etc.

Here, the detailed data structure will be described taking the basic pattern data as an example. As shown in FIG. 5, 1 part (4 measures) of data has a 1-byte [Tone Data] indicating the tone color of the part at the beginning, followed by 1
Pronunciation data (4 bytes) that specifies the pronunciation for each note
Are sequentially stored for each pronunciation. This pronunciation data is the [KEY N
O.], [Step] (0-48) that indicates the timing of pronunciation,
It is composed of data such as [Gate] indicating the length of pronunciation and [Velocity] indicating the strength (volume) of the pronunciation. In addition, after a plurality of pronunciation data, bar end data [Bar Mark] is placed for each bar of a bar, and pattern end data [End Mark] indicating the end of the data is placed at the end of the data of one part. Will be placed.

The intro data, fill-in data, and ending data (see FIG. 4) have substantially the same structure as the basic pattern data shown in FIG. Next, the structure of the automatic chord progression data stored in the chord progression data memory 16 (see FIG. 2) will be described in detail.

As shown in FIG. 6, the automatic chord progression data is data for one music piece of an accompaniment of one music piece complete format, and is provided for each rhythm. In addition, the program number of this automatic chord progression data. The names of chord progressions are also stored correspondingly. At the beginning of the automatic chord progression data, intro switching data [Intro Mark] for designating the intro pattern from the accompaniment pattern data (see FIG. 4) and playing the intro pattern is arranged. A plurality of 2-byte chord data for instructing a change of accompaniment chords are arranged in accordance with the progression of the piece of music to form chord progression data. This code data is composed of code information [Chord Name] indicating the type of code (code name such as C, Dm, E ₇ etc.) and [Step] which is the code change timing.

Further, bar end data [Bar Mark] is arranged at the delimiter of one bar. Further, fill-in switching data (fill-in data) for switching the accompaniment pattern data to fill-in data in the middle of the music and playing the fill-in pattern (fill-in pattern). [Fill Mark] indicating the switching to [1] and [Step] indicating the switching timing) are arranged. At the end of the data for one song, song end data [End Mark] indicating the end of the data is arranged.

The chord progression in the automatic chord progression data for one piece of music is preferably a typical chord progression that matches the rhythm to which the data belongs. That is, for example, in the case of automatic chord progression data of jazz, it is preferable to set chord progression of a musical tone like jazz. As described above, when jazz is selected by the rhythm selection switch 6 in this embodiment, the automatic progress data "33: Modern Jazz" is initialized. In this embodiment, even if the genre of jazz is "33: modern jazz", "34: blue note jazz", and "35: standard jazz", the program No. There are three types from 33 to 35, but modern jazz is supported as the initial setting.

Next, the control processing performed by the electronic keyboard 1 of the present embodiment having the above configuration will be described in detail with reference to the flowcharts of FIGS. In the electronic keyboard 1 of this embodiment, the main routine shown in FIG. 7 and the interrupt processing shown in FIG. 8 are mainly performed.

First, the main routine of FIG. 7 will be described in detail. This routine is started and always executed when the power switch 5 is turned on.
Initialization processing such as clearing AM 13 (see FIG. 2) is performed (step 11. The step will be simply referred to as S hereinafter),
Prepare for subsequent processing.

Next, the other switches 6 to 11 on the panel 17
A panel scan process for detecting the on / off state (see FIG. 3) is performed (S13), and it is determined whether the chord progression selection switch 10 has been operated (S15). If the chord progression selection switch 10 has not been operated, the process directly proceeds to S19, and if the chord progression selection switch 10 has been operated (S15: YES), the chord progression change process (S17) and the display process according to the operation. (S1
Perform 8).

Now, the chord progression changing process of S17 and the display process of S18 will be described. As mentioned above,
In the first display area 30a (see FIG. 3) of the display unit 30, the program No. of the automatic progress data set corresponding to the rhythm pattern selected by the rhythm selection switch 6 is displayed. And the chord progression name are displayed. In this case,
As shown in, the automatic progress data "33: Modern Jazz" is displayed.

When the "+" key of the chord progression selection switch 10 is pressed once, the chord progression of "34: Blue Note Jazz" is changed (S17), and the display is displayed in the first display area 30a (S18). ). When the "+" key is pressed twice, the chord progression of "35: Standard Jazz" is changed (S17), and the display is displayed in the first display area 30a (S18).

In this way, even in the same jazz genre, "33: Modern Jazz" is set as the initial setting.
Can be changed to "34: Blue Note Jazz" or "35: Standard Jazz". In this embodiment, in addition to the three types of jazz, chord progression data of genres such as rock, enka, folk song, nursery rhyme, Hawaiian, and reggae are stored. For example, program NO. "30: Tohoku folk song", "31: Okinawan folk song", and "32: Andean folk song" are stored in 30 to 32, respectively.

Therefore, when the "-" key of the chord progression selection switch 10 is pressed from the above "33: Modern jazz" state, the number of times of pressing becomes 1, 2, 3 times, and "32: folk song of Andean region". , "31: Okinawan folk song,"
The chord progression data of "30: Tohoku folk song" will be changed.

Returning to FIG. 7, in S19, a keyboard scanning process for detecting key depression and key release of the keyboard 3 is performed. It should be noted that, according to the information of key depression and key release detected by the keyboard scanning process, the speaker 26 can be operated like a conventional electronic keyboard.
(See FIG. 2) It is possible to generate and mute musical tones.

Next, it is judged whether or not the "auto accompaniment mode" is set by the accompaniment mode switch 7 (S
21) If a negative decision is made, the process returns to S13 and the above S13 to S19 are repeated. On the other hand, if an affirmative judgment is made in "automatic accompaniment mode" in S21, it is determined whether or not the automatic accompaniment is currently being performed (that is, the state where the start switch 9 is pressed and the automatic accompaniment is started). Judge (S2
2). If a negative determination is made here, the process directly returns to S13, but if an affirmative determination is made that the automatic accompaniment is being performed, it is subsequently determined whether or not the "automatic chord progression mode" is currently set (S23). If an affirmative decision is made here,
Then, the following processing (S27, S29) is executed to
Perform an automatic accompaniment in the form of song completion. That is, in the automatic chord progression data processing of S27 (see the flowchart of FIG. 9), the automatic chord progression data is read and processed. Then, the accompaniment pattern data processing (see the flowchart of FIG. 10) to be described later in S29 reads out the accompaniment pattern data, and performs processing such as chord turning and sound generation based on the previously read and processed automatic chord progression data.
Perform an automatic accompaniment to complete the song. The automatic chord progression data processing (FIG. 9) and the accompaniment pattern data processing (FIG. 10) will be described in detail later.

If it is determined in S23 above that the automatic chord progression mode is not in effect (that is, in the "manual chord progression mode"), the flow advances to S28 to detect chord information, and then S29. Performs accompaniment pattern data processing. In other words, in the "manual chord progression mode", a part of the keyboard 3 (generally, a low-pitched (lower) key is assigned) is assigned to a chord progression designation part, and is pressed in the designation part. From key operations, code information [Chord Na
me] is detected. Then, in S28, the chord information is detected, and accompaniment pattern data processing is executed based on the chord information. Therefore, as in the conventional case, the performer gives a chord progression to the accompaniment by depressing the keyboard and designating the type of chord. In this case, the performance of the basic pattern is repeated.

Next, the interrupt processing of FIG. 8 will be described in detail. This interruption processing is executed at predetermined time intervals according to conditions such as the tempo of the performance (set by the tempo setting switch 11 in FIG. 2) and the like. , The step count value “n”, which serves as a reference for the timing of the fill-in insertion and the like, is added.

In this processing, first, it is judged whether or not the automatic accompaniment is currently being performed (S31), and if a negative judgment is made,
The process directly returns to the main routine (FIG. 7), but if a positive determination is made, 1 is added to the step count n (n = n +
1) (S33). The value of n is reset to 0 when the automatic accompaniment is started.

Then, in the following S35, it is judged whether or not the step count n is equal to a predetermined value N, and if a negative judgment is made, the process directly returns to the main routine. On the other hand, S35
If the affirmative judgment is made, that is, the step count n =
When the value reaches the predetermined value N, the step count n is reset to 0 (S37) and the process returns to the main routine.

Here, the predetermined value N is determined according to the number of times the step count n is counted during one bar. That is, for example, with a time signature of 4/4, 1 / of a quarter note
When the step count is added every 12 hours (that is, when one bar is divided into 12 × 4 = 48 equal parts), the step count n is counted from 0 to 48 (= N), and N =
When it reaches 48, the step count n is reset to 0 in S37 of the interrupt process of FIG. 8 to indicate the end of one bar (that is, the start of the next bar).

Then, S27 of the main routine (FIG. 7).
Figure 9 shows the automatic chord progression data processing performed in
It will be described in detail based on the flowchart of FIG. In this process, first, the automatic chord progression data for each song (FIG. 6) is sequentially read from the beginning of the data for each section such as intro switching data and sounding data (S41). The automatic chord progression data read here is set by the rhythm setting switch 6 (see FIG. 3) when the chord progression selection switch 10 is not operated, as described in S15 and S17 of FIG. This is (initially set) automatic chord progression data corresponding to the rhythm being played. When the chord progression selection switch 10 is operated, the automatic chord progression data is changed according to the operation.

Next, it is judged whether or not the data read in S41 is intro switching data (S43), and if a positive judgment is made, the accompaniment pattern data to be read later is introduced to perform the intro performance. The data is switched (S45), and the pointer for designating the address of the read data is advanced (S47) in preparation for the next read of the automatic chord progression data. That is, when this process is executed next time, the data of the next section is read. On the other hand, if a negative decision is made at S41 that the data is not intro data, the pointer is not advanced and the process proceeds directly to S49.

Next, in S49, it is determined whether the data read in S41 is code data. If a negative determination is made here, the process directly proceeds to S57, but if an affirmative determination is made that the data is code data, it is determined whether or not [Step Time] of this code data and the current step count n match ( S51). Here, if a negative determination is made, the process directly proceeds to S57, but if a positive determination is made,
Code information currently stored in a predetermined area of the RAM 13 (indicating so-called code names such as C, Dm, E ₇ etc.)
Is updated to the code information [Chord Name] of this code data and stored (S53), and the pointer is incremented (S55).

Next, in S57, it is determined whether or not the data read in S41 is fill-in switching data. If a negative determination is made here, the process proceeds directly to S65, but if an affirmative determination is made, it is determined whether [Step] of the fill-in switching data and the current step count n match (S59). If a negative determination is made in S59, the process proceeds directly to S65, but if an affirmative determination is made, it is the performance timing of the fill-in pattern.
The accompaniment pattern data read later is switched to fill-in data (S61), and the pointer is incremented (S63).

Next, in S65, it is determined whether or not the data read in S41 is bar end data [BarMark]. If a negative determination is made in S65, the process directly proceeds to S71, but if an affirmative determination is made, it is determined whether or not the current step count n is 0 (S67). If a negative determination is made in S67 (that is, in the middle of a bar), the process proceeds to S71 as it is, but if an affirmative determination is made (that is, the end timing of the bar), the pointer is incremented (S69). .

Next, in S71, it is determined whether or not the data read in S41 is music end data [End Mark]. If a negative determination is made in S71, the process is temporarily terminated and the process returns to the main routine, but if an affirmative determination is made, it is determined whether or not the current step count n is 0 (S73). If a negative determination is made in S73 (that is, in the middle of a bar), the process immediately returns to the main routine, but if an affirmative determination is made, the accompaniment pattern data is switched to ending data (S75), and the main routine (FIG. 7). ) Return to.

As described above, in the present automatic chord progression data processing, the chord data of the automatic chord progression data and the data (fill-in switching data etc.) for instructing the switching of the accompaniment pattern are sequentially read to update the chord information. The accompaniment pattern data to be read is switched from the basic pattern data to fill-in data, ending data, or the like.

Then, S29 of the main routine (FIG. 7).
The accompaniment pattern data processing executed in step S10 will be described in detail with reference to the flowchart of FIG. In this process, first, the accompaniment pattern data (see FIGS. 4 and 5) corresponding to the rhythm selected by the rhythm selection switch 6 (see FIG. 3) is divided into sections such as pronunciation data and bar end data. The data is sequentially read from the beginning (S81).
The data read here is usually basic pattern data, but S4 of the automatic chord progression data processing described above is used.
When the data read out in S3 or S75 is switched, the intro data, fill-in data or ending data is read.

Next, it is judged whether or not the data read out in S81 is sound generation data (see FIG. 5) (S8).
3). If a negative determination is made in S83, S91 is directly executed.
If it is affirmatively determined that the data is sound data, it is determined whether [Step] of this data and the current step count n match (S84). If a negative determination is made in S84, the process directly proceeds to S91, but if an affirmative determination is made, it is the timing of sound generation.
85) is performed, and then a tone generation process (S87) is performed to generate a tone. After that, the pointer designating the read data is incremented (S89) to S91.

That is, in the code turning process of S85, R
Based on the current chord information stored in the AM 13 (which is updated and stored in S53 of the automatic chord progression data processing shown in FIG. 9), the read [KEY
NO.] (Pitch data) is changed.

Then, in the pronunciation processing of S87, this [KE
Y NO.] Is changed to generate the musical tone generation circuit 22
(See Fig. 2) Assign to the specified channel and input,
An audio signal output from the tone generation circuit 22 is amplified by an amplifier 25 in accordance with the sound generation data, and a sound of accompaniment is sounded from a speaker 27.

In the part of the accompaniment pattern data, which is in charge of accompaniment of chord sounds (for example, a piano), pronunciation data for each note constituting the chord sound is stored, and each of these plural pronunciation data is stored. On the other hand, chord turning and tone generation processing are performed, and a chord tone corresponding to the current chord information is played. Also, when there is a bass part, the chord inversion process is similarly performed, and the bass performance is performed at a pitch according to the chord information.

Returning to FIG. 10, next, in S91, S
The data read in 81 is the bar end data [Bar Ma
rk]. If a negative determination is made in S91, the process directly proceeds to S97, but if an affirmative determination is made in S91, it is determined whether or not the current step count n is 0 (S93). If a negative determination is made in S93 (that is, in the middle of a bar), the process proceeds to S97 as it is, but if an affirmative determination is made (that is, the end timing of the bar), the pointer is incremented (S95). .

Next, in S97, it is determined whether or not the data read in S81 is part end data [End Mark]. If a negative determination is made here, the part (see FIG. 4) of the accompaniment pattern data to be read in the next process is switched (S98), the process is temporarily terminated, and the process returns to the main routine.

On the other hand, if a negative determination is made in S97, this process is terminated and the process returns to the main routine, but if an affirmative determination is made, it is determined whether or not the current step count n is 0 (S99). ). If a negative determination is made in step S99 (that is, if it is in the middle of a measure), the process directly returns to the main routine, but if an affirmative determination is made (if it is the end of a measure), the read accompaniment pattern data The type (see FIG. 4) is determined (S100). Then, depending on the type, the following processing (S101, S103, S1
After performing 05), the process returns to the main routine.

That is, when the read data is the basic pattern data, the read address of the data is returned to the head (S101), and the process returns to the main routine. That is, next time, the basic pattern data is read again from the beginning, and the basic pattern performance is repeated.

On the other hand, if the read data is intro data or fill-in data, the data to be read next time is switched to the basic pattern data (S103).
That is, immediately after the intro or fill-in performance is finished, the basic pattern performance is immediately resumed.

When the read data is the ending data, the accompaniment for one piece of music is finished, and the flag indicating that the automatic accompaniment is being performed is cleared to set the automatic accompaniment end state (S105). In this state, a negative determination is made in S21 of the main routine (FIG. 7) that automatic accompaniment is not in progress.

Next, a concrete performance example of the automatic accompaniment of one song completion type in the electronic keyboard 1 of the present embodiment as described above will be described with reference to the flowchart of the main routine of FIG. 7 and FIG.
It will be described based on the explanatory diagram of FIG. Here, alphabetical symbols (E, A, E _7, etc.) in the explanatory diagram of FIG. 11 are chord names indicating chord progressions during performance.

First, before starting the automatic accompaniment of one song complete format, the performer selects a desired rhythm with the rhythm selection switch 6 (see FIG. 3), and operates the chord progression selection switch 10 if necessary. And change to the desired chord progression data. Further, the accompaniment mode switch 7 is set to the "automatic accompaniment mode", and further the chord progression mode switch 8 is set to the "automatic chord progression mode".

When the start switch 9 is pressed, 1
The music completion type automatic accompaniment is started, and the intro switching data at the head of the automatic chord progression data is read out at S27 (automatic chord progression data processing) of the main routine shown in FIG. processing)
Since the intro data is read at, the intro pattern is played (for two bars) as shown in FIG.

Next, when the performance of the intro pattern ends (that is, when the reading of the intro data is performed up to [End Mark]), the accompaniment pattern data read in S29 of the main routine shown in FIG. 7 is the basic pattern data. The performance of the basic pattern (for four measures) is repeated several times as shown in FIG. During the performance of this automatic accompaniment, the accompaniment pattern data is subjected to chord inversion processing based on the chord information [ChordName] of the automatic chord progression data (see S85 in the accompaniment pattern data processing of FIG. 10). As shown in
The chord during the automatic accompaniment is automatically changed for each measure from the beginning of the intro pattern performance to A → E → A → ... (that is, chord progression is automatically added).

While the chords are automatically changed in this way, the performance of the basic pattern is repeated and the accompaniment progresses. However, in step S23 of the main routine shown in FIG. 7, the fill-in switching data of the automatic chord progression data is changed. When read, the accompaniment pattern data read in S25 is switched to fill-in data, and as shown in FIG.
A fill-in pattern performance (1 bar) is inserted.
When the performance of the fill-in pattern is completed, the basic pattern performance is resumed.

When the music end data [End Mark] of the automatic chord progression data is read in S27 of the main routine, the accompaniment pattern data read in S29 is switched to the ending data, as shown in FIG. The ending pattern is played (two measures), and the accompaniment of one song completes automatically.

If the player plays a melody or the like on the keyboard 3 in accordance with the accompaniment as described above, the performance by the keyboard 3 is sounded from the speaker 26 together with the automatic accompaniment.
As described above in detail, in the electronic keyboard 1 of this embodiment, the accompaniment pattern data memory 15 stores accompaniment pattern data such as fill-in patterns and ending patterns. On the other hand, the automatic chord progression data memory 16 includes a plurality of chord data indicating chord types and chord change timings, and data for switching accompaniment patterns (fill-in switching data, etc.) The data is the program N
O. And the chord progression name are stored in advance. Also,
Automatic chord progression data is 1 for each rhythm pattern
Although the initial settings are made one by one, the automatic chord progression data can be arbitrarily selected by operating the chord progression selection switch 10.

Therefore, the player does not need to press the keyboard 3 to change the chord of the automatic accompaniment, and can concentrate on the performance of the melody and the like, so that even a beginner can enjoy the performance easily. Moreover, the automatic accompaniment is a one-track complete type in which chord progression changes automatically and patterns such as fill-in and ending are automatically switched. It doesn't repeat endlessly with the chord progression of
You can enjoy an interesting performance as a song. Furthermore, since the chord progression can be arbitrarily selected by the performer, when a certain rhythm pattern is selected, the chord progression not only is a preset pattern for the rhythm pattern, but also another chord progression. You can also

That is, according to the electronic keyboard 1 of this embodiment, even a beginner can easily enjoy a musical performance with automatic accompaniment, which is rich in taste, and a plurality of chord progressions can be selected for one rhythm pattern. As a result, there is a remarkable effect that one song can be played under a plurality of rhythm patterns.

Further, in the present embodiment, when chord progression data is selected, the chord progression name corresponding to the chord progression data is displayed in the first display area 30a of the display unit 30, so that the chord progression is indicated by the chord progression name. You can make a selection while referring to the contents of. For example, as described above, the names of the chord progression data are displayed as "33: Modern Jazz,""34: Blue Note Jazz,""35: Standard Jazz," so it is simply called jazz. Not only that, but further distinction within the same genre can be determined.

Although the embodiments have been described above, the present invention is not limited to the above embodiments and can be implemented in various modes. For example, the accompaniment pattern data is not limited to fill-in data, ending data, etc. in the above embodiment, and various accompaniment pattern data may be provided.
For example, data of an accompaniment pattern (about four measures) that is more flashy than the basic pattern is prepared, and the exciting part (so-called chorus part) in the accompaniment that completes one song is based on the automatic chord progression data. Then, the performance may be switched to this flashy accompaniment pattern.

Regarding the automatic chord progression data,
For each rhythm, a plurality of data in units of one tune (that is, data with different tunes) with different chord progressions, fill-in pattern insertion timings, etc. may be provided. For example, with regard to chord progressions, data having major (major) chord progressions, data having minor (minor) chord progressions, etc. are prepared so that the performer can appropriately select data having different musical tones. You may

[0082]

As described in detail above, according to the automatic accompaniment device for an electronic musical instrument according to claims 1 and 2, even a beginner can easily enjoy a musical performance with a rich automatic accompaniment, and A plurality of chord progressions can be selected for one rhythm pattern, and as a result, one song can be played under a plurality of rhythm patterns.

Further, according to the second aspect, since it is possible to make a selection while referring to the contents of the chord progression by the chord progression name, it is convenient.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a basic configuration of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of the electronic keyboard of the embodiment.

FIG. 3 is a front view showing a panel of the electronic keyboard of the embodiment.

FIG. 4 is an explanatory diagram showing a data structure of accompaniment pattern data according to the embodiment.

FIG. 5 is an explanatory diagram showing a data structure of basic pattern data according to the embodiment.

FIG. 6 is an explanatory diagram showing a data structure of automatic chord progression data according to the embodiment.

FIG. 7 is a flowchart showing a main routine of the embodiment.

FIG. 8 is a flowchart showing an interrupt process of the embodiment.

FIG. 9 is a flowchart showing an automatic chord progression data process of the embodiment.

FIG. 10 is a flowchart showing accompaniment pattern data processing according to the embodiment.

FIG. 11 is a time chart showing a performance example of an automatic accompaniment of one song completion format according to the embodiment.

[Explanation of symbols]

M1 ... accompaniment pattern storage means, M2 ... automatic chord progression data storage means, M3 ... chord progression data selection means, M4 ... automatic accompaniment processing means, M5 ... chord progression name storage means, M6 ... display means, 1 ... electronic keyboard,
3 ... keyboard, 7 ... accompaniment mode switch, 8 ... chord progression mode switch, 9 ... start switch, 1
0 ... Chord progression selection switch, 12 ... CPU, 1
3 ... RAM, 15 ... Accompaniment pattern data memory, 16 ...
Automatic chord progression data memory, 22 ... tone signal generating circuit, 30 ... display section, 30a ... first display area

Front page continued (72) Inventor Junichi Takano 200 Terashima-cho, Hamamatsu City, Shizuoka Prefecture, Kawai Musical Instrument Mfg. Co., Ltd. ) Inventor Satoshi Fujimoto 200 Terashima-cho, Hamamatsu City, Shizuoka Prefecture Kawai Musical Instrument Mfg. Co., Ltd.

Claims (2)

[Claims] 1. An automatic accompaniment for an electronic musical instrument, which performs automatic accompaniment with a predetermined chord, based on accompaniment patterns such as fill-in patterns and ending patterns stored in accompaniment pattern storage means and chord information indicating chord types. In the device, chord progression data of automatic accompaniment for each tune corresponding to each rhythm pattern includes a plurality of chord information, chord change timing data, and pattern switching data for instructing switching of the accompaniment pattern. Stored chord progression data storage means, chord progression data selection means for selecting arbitrary data from a plurality of chord progression data stored in the chord progression data storage means, and chord progression data selection means If no is selected by, the chord progression data corresponding to each rhythm pattern is On the other hand, when the chord progression data selecting means makes a selection, the selected chord progression data is read from the chord progression data storage means, and the read chord progression is read. An automatic accompaniment device for an electronic musical instrument, comprising: an automatic accompaniment processing means for switching the accompaniment pattern based on data and performing an automatic accompaniment of one song completion format in a predetermined chord progression. 2. The automatic accompaniment apparatus for an electronic musical instrument according to claim 1, wherein the chord progression data storage means stores a name corresponding to the contents of the chord progression data stored therein. A name storage means is provided, and the chord progression name corresponding to the chord progression data selected by the chord progression data selecting means is read from the chord progression name storage means and displayed on the display means. Automatic accompaniment device for electronic musical instruments.