JPH01179089A - Automatic playing device - Google Patents

Abstract

PURPOSE:To provide the degree of freedom of timbre selection to some extent and to eliminate the trouble of setting timbre, sequence by sequence, by selecting timbre with a switch for one of sequences of accompaniment tones and determining timbre associatively for other sequences. CONSTITUTION:This device has an automatic code (automatic accompaniment sequence) of two sequences of a chord tone and an arpeggio tone and is provided with only a chord timbre switch 56 as a timbre selection switch and to switch for the arpeggio tone. The arpeggio tone is determined automatically through the arpeggio timbre determination processing of a CPU 20 according to a rhythm pattern, chord timbre, and a chord pattern. Consequently, the degree of freedom of timbre selection is obtained to some extent, complicate timbre setting by the sequence is not necessary, and the device plays with a favorite timbre combination.

Description

[Detailed description of the invention] The invention will be explained in the following order.

Industrial Application Fields Prior Art Problems to be Solved by the Invention Means for Solving the Problems Examples of Functions and Effects Explanation of the configuration of the electronic musical instrument shown in Figure 1 Explanation of the operation of the electronic musical instrument shown in Figure 1 1 Main routine Processing (Fig. 5) 2. Arpeggio tone color determination processing (Fig. 6) 3. Tempo interrupt processing (Fig. 7) Variations of the embodiment [Field of industrial application] This invention is applicable to chord designation on a keyboard, etc. This invention relates to an automatic accompaniment device that automatically performs chord backing sounds, arpeggio sounds, etc. based on chords specified by a means and an accompaniment pattern stored in a memory, and in particular can play two types of accompaniment sounds at the same time with an appropriate combination of tones. This invention relates to an automatic accompaniment device.

[Prior Art] In a conventional automatic accompaniment device for an electronic musical instrument, the accompaniment tone is
As shown in Japanese Unexamined Patent Publication No. 62-135894, the tone color can be changed using a tone switch, or
As shown in Japanese Patent No. 38698, the switching was performed in conjunction with the rhythm or accompaniment pattern.

[Problems to be Solved by the Invention] By the way, when such an automatic accompaniment device generates multiple series of accompaniment sounds, it is possible to freely select the tone by providing a tone switch for each series. , the number of switches increases, and it is difficult to select an appropriate tone (combination).

On the other hand, in the accompaniment pattern-linked type, in which the tone is linked to the accompaniment pattern, when an accompaniment pattern is selected, the tone is determined accordingly, and there is no freedom to select other tones for that accompaniment pattern. .

In view of the problems with the conventional type, this invention
To provide an automatic accompaniment device capable of simultaneously playing a plurality of series of accompaniment tones, which has a certain degree of freedom in selecting timbres, and eliminates the trouble of setting timbres for each series.

[Means for Solving the Problems] In order to solve the above-mentioned problems, in the present invention, the timbre of at least one series of accompaniment tones of a plurality of series is selected by a switch, and at least one other series is linked to this selection. to determine the tone.

Further, in another aspect of the present invention, the tone color of the other one series and the presence or absence of sound generation are further determined in accordance with patterns such as rhythm.

[Operation] In the present invention configured as described above, at least one series of timbres is arbitrarily selected by the timbre switch, and at least one other series of timbres is automatically determined in conjunction with this timbre selection. 6 In addition, in the other aspect, the other at least one series of tones is automatically selected according to both the tone selected by the tone switch and the pattern type separately selected. It is determined.

Further, the non-sounding state is set in the same line as the timbre, and is automatically determined as one of the timbres.

[Effect] As described above, according to the present invention, it is possible to select the timbre of at least one of the plurality of accompaniment tones by a switch, and the timbre of at least one other accompaniment tone is determined in conjunction with the switch. As a result, there is a certain degree of freedom in tone color selection, and there is no need to make complicated tone color settings for each series, making it possible to perform with a preferred tone color combination.

[Example] Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 1 shows the hardware configuration of an electronic musical instrument to which an automatic accompaniment device according to an embodiment of the present invention is applied. This electronic musical instrument uses a two-series auto chord system that automatically plays chord tones and arpeggio tones with independent tones.Only one (chord tone) tone switch is installed, and the other (arpeggio tone) tone is linked to the chord tone. This is what I decided to change.

(Description of the configuration of the electronic musical instrument shown in FIG. 1) In FIG. 1, a keyboard circuit 10 detects a pressed key on a keyboard (not shown) and generates key information (key code) representing the pressed key. This key code is M I D
I (Musical Instrument
Digital Interface) standard, and the position of the pressed key (key) CI, C#1. D
+ ,...a B 1 rC2,..., corresponding to C6, multiple of 12 (in decimal notation) 36.48 for each C note
．． ..., 96, and the other keys are assigned values that increase by 1 for each semitone. Furthermore, the (key) code 0 represents a rest, that is, a state in which no key is pressed. In the following, unless otherwise specified, numerical data such as key codes will be expressed in decimal numbers.

The electronic musical instrument shown in Figure 1 is controlled by a central processing unit (C
PtJ) 20,
This CPU 20 is connected to the keyboard circuit 10, a program memory 24, a register group 26, a pattern memory 30, a clock generator 40, etc. via a bidirectional path line 22. The switch group 50, tone table 60, and tone generator tone 0 are connected. A sound system consisting of an amplifier, speakers, etc. (not shown) is connected to the tone generator 70. Further, the clock pulse output terminal of the clock generator 40 is connected to the CP via the signal line 80.
It is connected to the interrupt signal input terminal of U20.

The program memory 24 is composed of ROM, and the fourth to sixth
Control programs such as a main routine process, an arpeggio timbre determination subroutine process, and a tempo interrupt process, which correspond to the flowchart shown in the figure, are stored.

The register group 26 is for temporarily storing various data generated when the CPU 20 executes the control program, and includes the following registers set in the RAM. In the following description, each register group and its contents (data, etc.) will be represented by the same label name unless otherwise specified.

TCLK: Indicates the progression position within one measure of the tempo black autorhythm, 0-
31 RUN: Rhythm run flag Indicates whether the rhythm is running (=1) or stopped (electronic O) RHY: Rhythm pattern number VAR: Chord variation number Setting position number of the chord variation switch described later, 1 to 7 VAR2 :Chord variation code that is valid only when VAR≧5, VAR-4, TONEI used for arpeggio sound generation processing:Chord tone number TONE2. The arpeggio tone number pattern memory 30 is composed of a ROM, and stores rhythm patterns and accompaniment patterns. As the rhythm pattern RHY, one or more patterns including a normal pattern are stored for each rhythm type such as big band and number. In the following, the big band normal pattern is referred to as “big band (0)”.
”, the second variation pattern of the number is “Number (
2)", and as an accompaniment pattern,
Two types of patterns are stored: a chord sound pattern and an arpeggio sound pattern, and seven types of chord sound patterns can be selected for each rhythm pattern. Further, the arpeggio sound pattern is switched in conjunction with the chord sound pattern, and at switch setting positions 1 to 4, no arpeggio sound pattern is prepared and no arpeggio sound is produced.

The tempo clock generator 40 is composed of a variable frequency oscillator or a combination of a fixed frequency oscillator and a variable division rate divider, and is configured to generate 32 clocks according to a preset tempo.
A clock pulse is generated at a period corresponding to one diacritic note. This clock pulse is transmitted to CP via signal line 80.
It is input to U20 as an interrupt signal.

The switch group 50 is arranged on the operation panel shown in FIG. 2, and includes a rhythm start/stop switch 52, a rhythm pattern selection switch 54, a chord tone color selection switch 56, a chord pariage selection switch 58, and the like. The rhythm start/stop switch 52 is used to specify the start and stop of automatic rhythm and automatic accompaniment.

As an example is shown in FIG. 3, the tone table 60 includes a chord tone TONEI, a rhythm pattern number RHY, and a chord variation code VAR2 (=VAR-4).
This represents the optimal combination of TONE2 and arpeggio tone TONE2. That is, if the chord tone TONEI, rhythm pattern number RHY, and chord variation code VAR2 are set, the arpeggio tone TONE
2 is automatically determined by the following equation.

TNCNV (TONEI, RHY, VAR2) mouth TO
The NE2 tone generator 70 is equipped with one or more musical tone forming channels for forming key pressed sounds, chord sounds, and arpeggio sounds, respectively, and receives key pressed (key on), key released (key off), and A sound system (equipped with an amplifier, etc.) that forms a musical tone signal based on data on timbre (i.e., type of instrument) and pitch
(not shown). The sound system produces musical tones based on this musical tone signal.

(Explanation of the operation of the electronic musical instrument shown in FIG. 1) Next, the operation of the electronic musical instrument shown in FIG. 1 will be explained with reference to the flowcharts shown in FIGS. 4 to 6.

When the electronic musical instrument is powered on, the CPU 20 starts operating according to the control program stored in the program memory 24. First, execute the processing shown in the main routine starting from step 100 in FIG.
Execute the tempo interrupt processing shown in the figure.

! , Main Routine Referring to FIG. 4, at step 101, initialization processing such as resetting the rhythm run flag RUN is performed.Then, at step 11o.

120. A circular process consisting of determination processes at 130, 140, and 150 and "other processes" at step 160 is executed.

As a result of inspecting the output of the keyboard circuit 1o in step 110, if there is no key event, proceed directly from step 110 to step 120, and if there is a key event, step 1
Proceed to step 11. In step 111, a conventionally known key assignment process is performed based on the key event. Next, in step 112, key-on/key-off processing (pronunciation processing) is performed for the key-assigned pressed notes, and in step 113, a chord (chord type and root note) is detected based on the result of the key assignment. After that, the process proceeds to step 120.

In steps 120, 130, 140, and 150, the outputs of the switch group 50 are checked. As a result of inspecting the output of the switch group 50 in step 120, if it is detected that there is an on event of the start/stop switch 52, that is, the state of the switch 52 has changed from off to on, the process branches to step 121 and the rhythm run flag RU
N is inverted, and in the subsequent step 122 it is checked whether the flag RLIN has become "1" (set). When the flag RUN is set, the tempo clock TC is set in step 123 to start the rhythm and automatic accompaniment.
After clearing LK, on the other hand, when the flag RUN is reset, in order to stop the automatic accompaniment, in step 124, key-off is executed for all accompaniment sound generation channels, and then the process proceeds to step 130. When an on event of the switch 52 is not detected, the process directly proceeds from step 120 to step 130 without performing steps 121 to 124.

In step 130, it is determined based on the output of the switch group 50 whether any of the rhythm pattern switches 54 is turned on. If the switch 54 is turned on, step 1
After branching to step 31 and storing the selected rhythm number in the rhythm number register RHY, the arpeggio tone color determination process (subroutine process of step 200) is executed, and then the process proceeds to step 140. On the other hand, if it is not detected in step 130 that the switch 54 is turned on, step 13
Steps 1 and 200 are skipped and the process directly proceeds from step 130 to step 140.

In step 140, it is determined based on the output of the switch group 50 whether any of the chord tone color switches 56 is turned on. If there is a switch 56 turned on, step 141
, stores the selected chord tone number in the chord tone number register TONE1, changes the tone of the chord tone forming channel of the tone generator 70 to TONEI in step 142, and then proceeds to arpeggio tone tone determination processing (step 200). and then step 150
On the other hand, if it is not detected in step 140 that the switch 56 is turned on, the processing in steps 141, 142 and 200 is skipped and the process directly proceeds from step 140 to step 150.

In step 150, it is determined based on the output of the switch group 50 whether the chord variation switch 58 has been switched. If the switch 58 is switched, the process branches to step 151, and after storing the changed chord variation number in the chord variation number register VAR, arpeggio tone tone determination processing (step 200)
is executed, and then the process proceeds to step 160. On the other hand, if switching of the switch 58 is not detected in step 150,
Steps 151 and 200 are skipped and the process directly proceeds from step 150 to step 160.

In step 160, "other processing" such as changing the tempo and changing the volume is executed. Then, return to step 110,
The processing of steps 110 to 160 above is repeated.

2. Arpeggio Tone ° The electronic musical instrument shown in Figure 1 has two series of auto chords (automatic accompaniment series): chord tones and arpeggio tones, but only the chord tone switch 56 is provided as a tone selection switch, and the arpeggio tone No sound is provided, and the arpeggio tone is automatically determined according to the rhythm pattern, chord tone, and chord pattern by the arpeggio tone determination process in step 200 (FIG. 5). . That is, when any one of the rhythm pattern, chord tone color, and chord pattern is changed, the arpeggio tone tone determination process of step 200 is executed.

, with reference to FIG. 5, in step 201 it is determined whether the chord variation number VAR is "5" or more.

In this electronic musical instrument, arpeggio sound patterns corresponding to chord variation numbers VAR 1 to 4 are not prepared, and arpeggio sounds that are not produced are only played when number VAR is 5 to 7. . Therefore, if the number MAR is not 5 or more in step 201, that is, if the number MAR is 1 to 4,
Since no arpeggio tones are to be played, no timbre is determined, and the process immediately returns to the original main routine (FIG. 4).

On the other hand, if the number VAR is 5 or more in step 201, the number VAR is converted into the chord variation code VAR2 of the tone table (Figure 3) in step 202, and the chord tone TONEI, rhythm pattern RHY and Code variation VAR
2, the arpeggio tone is determined by referring to the tone table, and the arpeggio tone is stored in the arpeggio tone number register TON.
Store in E2. Furthermore, in step 204, after changing the tone of the arpeggio sound forming channel of tone generator Tough 0 to TONEI, the original main routine processing (
Return to Figure 4).

3. Tempo interrupt processing In this electronic musical instrument, the tempo interrupt process (step 300) shown in FIG. 6 is executed using the clock pulse output from the tempo clock generator 40 as an interrupt signal.

Referring to FIG. 6, in step 301, a running run flag RUN is checked. If the flag RUN is "0'", the automatic performance of the rhythm and accompaniment is stopped, and there is no need to process the rhythm and accompaniment sounds and count the tempo clock, so immediately cancel the interrupt and return to the original state. Return to processing.

On the other hand, if the flag RUN is "l", the automatic performance of the rhythm and accompaniment is in progress, so in step 302, rhythm sound generation processing is performed based on the tempo clock TCLK and the rhythm number RHY (rhythm type). ,
In step 303, a chord pattern is read out from the pattern memory 30 based on the tempo clock TCLK, rhythm number RHY (rhythm type), and chord variation number MAR, and a chord tone is generated according to the chord detected in step 113, and then, in step 304
In step 304, it is determined whether the chord variation number VAR is "5" or more. If it is ``5'' or more, the code VAR2 is calculated by subtracting 4 from the number VAR in step 305, and the code VAR2 is calculated from the pattern memory 30 in step 306 based on the tempo clock TCLK, rhythm number RHY (rhythm type), and chord variation code VAR2. After reading out the arpeggio sound pattern and producing an arpeggio sound according to the chord detected in step 113, the process proceeds to step 307.Meanwhile,
If the number VAR is not "5" or more in step 304, the arpeggio sound will not be generated, so steps 305 and 306 are skipped and the process directly proceeds from step 304 to step 307.

Next, in step 307, the tempo clock TCLK is incremented within a cycle number of 0 to 31, and then the interrupt is canceled and the original processing is resumed.

Through the above processing, in the electronic musical instrument of FIG. 1, chord tones of the tone selected by the chord tone selection switch 56 are played according to the chord pattern selected by the rhythm pattern selection switch 54 and the chord variation switch 58, and In conjunction with this selection of chord tones, etc., an arpeggio tone of an automatically determined tone is played.

[Modifications of Embodiments] Note that the present invention is not limited to the above embodiments, and can be implemented with appropriate modifications.

For example, 1. Although the above embodiment does not mention the bass sound, it is also possible to add a bass sound.

2. Although the above description does not refer to melody sounds, it is also possible to add a melody key range.

3. In the above description, there are two accompaniment sequences: chord tones and arpeggio tones, but the accompaniment sequence is not limited to two.

4. Furthermore, the performance form of each series (bass, chord, arpeggio, etc.) is not limited to the above.

5. In the above, in chord variations 1 to 4, the generation of the second accompaniment note was prohibited by not providing the arpeggio pattern, which is the second accompaniment note, but it is not possible to read out or transmit the accompaniment note information by providing the pattern. It may be prohibited.

6. There is no need to pronounce the key press sound.

7. The chord specifying means may be either a fingered mode in which each constituent note of the chord is pressed, or a single fingered mode in which the chord is specified using the root note of the chord and another white key or black key.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the hardware configuration of an electronic musical instrument according to an embodiment of the present invention, FIG. 2 is an overview diagram of the operation panel of the electronic musical instrument shown in FIG. 1, and FIG. 3 is a diagram similar to the one shown in FIG. FIG. 4 is a flowchart of the main routine processing of the electronic musical instrument of FIG. 1; FIG. 5 is a flowchart of the arpeggio tone determination process of the electronic musical instrument of FIG. 1; This figure is a flowchart of the tempo interrupt processing of the electronic musical instrument shown in FIG. 10: Keyboard circuit, 20: Central processing unit (CPU), 24 Niprogram memory, 26: Register group, 30: Pattern memory, 40: Tempo clock generator, 50: Switch group, 60: Tone table, 70: Tone generator.

Claims (1)

[Claims] 1. Pitch information generation means; Tone selection means; Based on the pitch information output from the pitch information generation means and the first tone information output from the tone selection means. a first accompaniment sound control means for controlling generation of a first accompaniment sound; a timbre information generation means for generating second timbre information based on the first timbre information; An automatic accompaniment device comprising: second accompaniment sound control means for controlling generation of the second accompaniment sound based on timbre information. 2. pitch information generation means; tone selection means; pattern selection means; pitch information output from the pitch information generation means, first tone information output from the tone selection means, and pattern selection. a first accompaniment sound control means for controlling generation of a first accompaniment sound based on pattern selection information outputted from the means; and generating second timbre information based on the first timbre information and pattern selection information. and second accompanist control means that controls generation of the second accompanist based on the pitch information, second timbre information, and pattern selection information. Automatic accompaniment device. 3. The automatic accompaniment according to claim 2, wherein the second accompaniment sound control means prohibits the production of the second accompaniment sound when specific pattern selection information is output from the pattern selection means. Device.