JPH08106289A - Automatic accompaniment device for electronic/electric musical instrument - Google Patents

Abstract

PURPOSE: To make possible the code changeovers in real time by assigning code information to plural operation means and inputting code information while operating either of operation means at the time any rythm style is selected. CONSTITUTION: A foot switch 17 to be connected to a CPU 11, an RAM 12, a program memory 13, an accompaniment pattern data memory 14 and a memory for a foot switch 15 via a foot interface 16 is connected to them each other via data busses 10. A playing is performed while performing code changeovers by taking out code information from the table of code information corresponding to respective rythm styles by proper operations of operation means 17 such as pedal, foot switch and so forth, every time codes are needed in the playing. Thus, since desired code information are made possible to be changed over in comformity with rythm styles of each time even during the playing, a desired playing is continued.

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 for electronic and electric musical instruments having a chord switching function during performance.

[Prior art]

[0002] In recent years, a wide variety of electronic musical instruments and electric musical instruments such as electric guitars, which have various functions that are infinitely close to or beyond those of natural musical instruments, have been widely used and widely used.

In an electronic / electrical musical instrument for such a purpose, a read-only memory (hereinafter referred to as RO
Various waveforms are stored in M).

The waveform stored in the ROM is read out and amplified according to an address specified by a central processing unit (hereinafter referred to as CPU) in response to selection / operation by a panel, a keyboard, a stringed input section or the like. And after being A / D converted, or after being D / A converted and amplified, it is output as an acoustic output.

Further, among such electronic and electric musical instruments, keyboard musical instruments such as electronic pianos and keyboards, sound source modules without keyboards, electronic and electric musical instruments such as electric guitars are widely equipped with automatic accompaniment devices. Are known.

The automatic accompaniment device for electronic and electric musical instruments is
For example, pitch data (key number), pitch timing data (step), and volume data that represent the pitch of each rhythm style of a song to be played, such as rock and waltz.
(Velocity) and pronunciation duration data (gate)
The reference accompaniment data including the above items is stored. The accompaniment data in this case is often created based on C major.

The pronunciation data for producing the accompaniment tones include reference accompaniment data stored in this way, chord types (chord types) such as major and minor, and root tones (C, D, E, etc.). Code route) and code information. Then, based on these pieces of information, the accompaniment chord is changed according to the progress of the music, and the automatic accompaniment is controlled.

As a method of inputting chord information in the control of the automatic accompaniment apparatus according to the prior art as described above, in the case of a keyboard instrument, a chord is designated by the keyboard and chord progression data accompanied by step data is stored in advance. There was a way.

For example, in an automatic accompaniment apparatus for an electric musical instrument having no keyboard such as an electric guitar, a method of previously having chord progression data has been adopted for inputting chord information.

In such a system, there is a drawback that chords cannot be switched in real time during performance. In this case, for example, even if a keyboard is additionally provided to enable chord switching, it is difficult to specify the chord during the performance.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is an electronic / electrical musical instrument corresponding to various rhythm styles, which is equipped with an automatic accompaniment device capable of chord switching in real time. -The purpose is to provide electric musical instruments.

[0012]

The present invention is provided with a table of use chord information corresponding to each of a plurality of rhythm style data, and assigns the chord information to a plurality of operating means, and the plurality of rhythm style data are stored. When any one of the rhythm styles is selected, the automatic accompaniment device that enables real-time chord switching during electronic / electric musical instrument performance by operating any of the operating means to input chord information. It is characterized by being an electronic / electric musical instrument equipped with.

Further, the present invention is characterized in that the electronic / electrical instrument is a stringed instrument or a keyboard instrument.

[0014]

According to the present invention, each time a chord is needed during a performance, the chord information is selected from the chord information table corresponding to each rhythm style data by operating an appropriate operating means such as a pedal or a foot switch. By taking out, it is possible to play while switching chords.

Therefore, the desired chord information can be switched in response to each rhythm style even during the performance so that the desired performance can be continued and the intended purpose can be achieved. .

The present invention is particularly effective for electronic / electric musical instruments having no keyboard, such as an electric guitar, but when applied to a keyboard musical instrument, chord-related data is input by an operator such as a pedal or a foot switch. , Both hands can be used for playing at all times, and more expressive power can be exhibited.

[0017]

1 is a block diagram schematically showing the overall construction of an electronic / electric musical instrument having an automatic accompaniment apparatus according to the present invention.

In the figure, 11 is a central processing unit (hereinafter,
CPU), the CPU 11 follows the control program stored in the program memory 13, and
It also controls the entire electronic / electric musical instrument while also considering the memory contents of M12.

For example, the CPU 11 uses the foot switch 1
7 and the setting state of the panel switch 19, the tone generation parameters are read according to the stored contents of the accompaniment pattern data memory 14 and the foot switch memory 15.

These various parameters are sent to the musical tone signal generation circuit 20 to perform processing for generating musical tones that match the respective playing conditions.

12 is a random access memory (hereinafter, R
The RAM 12 temporarily stores various data handled by the CPU 11, and includes definitions of various registers, counters, flags, etc. for controlling the electronic / electric musical instrument.

A program memory 13 stores a control program, and the program memory 13 has a CPU 11
In addition to storing the control program of, various fixed data required by the CPU 11 is stored.

Further, the program memory 13 stores, for example, tone generation parameters for generating a musical tone of a predetermined tone color. This tone generation parameter is provided for each tone color and tone range, and includes, for example, waveform address, frequency data, envelope data, filter coefficient, and the like.

Reference numeral 14 is an accompaniment pattern data memory,
The accompaniment pattern data memory 14 stores pattern data and automatic chord progression data.

FIG. 2 shows the accompaniment pattern data memory 14
3 shows an example of the structure of pattern data and automatic chord progression data stored in FIG.

The pattern data shown in FIG. 2A includes the key number of the accompaniment pattern, that is, accompaniment number (pitch data), step (sounding timing data), gate (sounding duration data), velocity (volume data), and the like. It is data relating to various accompaniment patterns, which is appropriately configured by using one bar of data as a unit.

The automatic chord progression data shown in FIG. 2 (b) includes root notes (chord roots) such as C, D and E, chord types such as major and minor, and chord information such as FILL mark. The pattern data and the automatic chord progression data constitute automatic accompaniment data.

Reference numeral 15 is a foot switch memory, and the foot switch memory 15 stores foot switch assignment data and a use chord table for each rhythm style.

FIG. 3 shows the memory 15 for the foot switch.
FIG. 3 is a diagram showing a configuration example of foot switch assignment data and a usage chord table for each rhythm style stored in FIG.

The foot switch allocating memory for storing the foot switch allocating data shown in FIG. 3A stores the data for allocating the respective codes to the respective foot switches. The function allocating buffer and the code allocating buffer. Have and.

The function allocation buffer stores data such as start / stop, fill-in, chord part on / off, bass part on / off, and rhythm style switching.

The code allocation buffers are A7, D
Data concerning codes such as 7, E7 ... Am, Dm: Em are stored. The code used in each of these tables can be set by the performer.

As shown in the figure, the use chord table for each rhythm style shown in FIG. 3 (b) is an optimum chord style, for example, A7, D7,
The codes such as the style 1 such as E7, ... Em and the code styles 2, 3, ... N corresponding to each operator are stored.

For each rhythm style, the chord group can be selected from a plurality of data tables, and during the performance, each rhythm style can be selected for the chord group being used.

Reference numeral 16 is a foot switch interface, which mediates transmission and reception of signals between the foot switch 17 and the data bus 10. The signal indicating the on / off state of the switch, which is sent from the foot switch 17, is sent to the CPU 11 via the foot switch interface 16 and the data bus 10.

17 is a foot switch interface 1
The foot switch 17 is connected via 6 and the foot switch 17 is placed at the foot of the player and operated by the foot.

FIG. 4 is a diagram showing a configuration example of the foot switch 17. The foot switch 17 can include the configuration shown in FIG. 4, but it is needless to say that the configuration is not limited to such a configuration.

In the configuration example of FIG. 4, the foot switch 17
Is a rhythm style selection switch group 31, a display unit 32,
A cursor key 33, a value key 34, a setting mode switch 35, a foot switch group 36 for allocating functions, a foot switch group 37 for allocating codes to be used, and the like are provided.

The rhythm style selection switch group 31 includes
The rhythm style built in the electronic musical instrument is selected and determined. The display unit 32 is, for example, a liquid crystal display unit, and displays the content set by a foot switch described later.

Cursor key 33 and value key 3
Reference numeral 4 is a key used for setting or operation. The setting mode switch 35 is for selecting a mode for setting the function of each foot switch.

Each function assignment foot switch group 36 assigns each function in the setting mode selected by operating the setting mode switch 35. In the illustrated state, from the left, start / stop, fill in, chord part on / off, bass part on / off
Each function in the function allocation buffer shown in FIG. 3A, such as OFF and style switching, is set.

Code assignment foot switch group 37
Are set in correspondence with the data in the code allocation buffer shown in FIG. 3 (a), and code numbers 1, 2, 3, ...
Is assigned as.

When a request for switching chords is generated during performance, by operating each function assignment foot switch group 36 and / or used chord assignment foot switch group 37, it is possible to perform any operation without using fingers during performance. And a desired code can be generated.

The line OUT and the line IN are used to connect a musical tone signal to a musical instrument.
N and MIDI OUT are MI of computer and other musical instruments.
It shows a connection portion with a DI (Musical Instrument Digital Interface).

Reference numeral 19 denotes a panel switch connected through the panel interface 18, which is provided with various operators for controlling the electronic musical instrument, that is, a tone color selection switch, a rhythm selection switch, a volume control switch, and the like.

Reference numeral 18 denotes a panel switch interface, which mediates transmission / reception of signals between the panel switch 19 and the data bus 10. Panel switch 1
The signal indicating the on / off state of the switch, which is sent from the switch 9, is sent to the CPU 11 via the panel switch interface 18 and the data bus 10.

Reference numeral 20 denotes a tone signal generation circuit, which is a CPU 1
The musical tone waveform data and the envelope data corresponding to the data output from 1 are read from a musical tone waveform memory (not shown), the read musical tone waveform data is added with an envelope, and the musical tone signal is output.

An amplifier 21 is connected to the tone signal generating circuit 20 via the data bus 10. A signal from the amplifier 21 is output from a line-out 22 and a signal from an external device is output from a line-in 23. 21 is input.

Reference numeral 21 is an amplifier, which is a tone signal generation circuit 2
The tone signal supplied from 0 is amplified with a predetermined gain.

Reference numeral 22 is a line-out, and reference numeral 23 is a line-in, which outputs or inputs a tone signal of the electronic musical instrument according to the present invention.

The CPU 11, the RAM 12, the program memory 13, the accompaniment pattern data memory 14, the foot switch memory 15, the foot switch 17 connected via the foot switch interface 16, and the panel switch connected via the panel interface 18. 19 are connected to each other via the data bus 10.

5 and 6 are flow charts showing the main routine of the chord switching operation in the electronic / electrical musical instrument according to the present invention. With the start of the main routine, each part is initialized (step S1).

First, a panel scan is performed, and the presence or absence of an event corresponding to the panel operation is scanned and detected (step S2). After that, the presence or absence of an event due to the operation of each operator (pedal or foot switch, etc.) such as code designation and function assignment is scanned (step S).
3).

Next, it is determined whether or not the operating element setting mode is set (step S4). In the setting mode, the function of the operator and / or the chord group for each rhythm style is set (step S5), and after that, other required processing (step S25), for example, after switching the display unit is performed. , And the operations after step S2 are repeated.

On the other hand, if it is determined in step S4 that the operator is not in the operator setting mode, it is determined whether or not the code specifying operator is operated (step S6). If there is an event, it is assigned to the operator. The entered code is input (step S7).

After the code is input, or when it is determined in step S6 that there is no event, it is determined whether or not each function designating operator is operated (step S).
8).

When it is determined in step S8 that each function designating operator is operated, the designated function is executed, for example, start / stop is executed (step S9).

After executing this function, or in step S
If there is no operation of each function designating operator in 8, it is determined whether or not automatic accompaniment is being performed (step S10),
If the automatic accompaniment is not being performed, it is determined whether or not the rhythm style is changed (step S11).

If the rhythm style is changed in step S11, the assignment is changed to the chord group of the manipulator corresponding to the changed rhythm style (step S12), and the change contents are displayed and other processing (step S25). ), Step S2 and subsequent steps are repeated.

On the other hand, if there is no change in the rhythm style in step S12, the other processes (step S25) are performed as they are, and then step S2 and subsequent steps are repeated.

If it is determined in step S10 that automatic accompaniment is being performed, it is determined whether or not step processing has been completed, depending on whether or not a step count is being performed by a timer (not shown) ( Step S1
3).

Here, if it is determined that the step processing is being performed, the step processing completed flag is reset (step S14). On the other hand, if it is determined that the step processing is not being performed here, after the other processing (step S25) is performed, step S2 and subsequent steps are repeated.

After the step processed flag is reset, it is determined whether the automatic chord progression is on (step S15). When it is determined that the automatic chord progression is on, the chord progression data indicated by the pointer is read (step S16).

After reading the data, it is judged whether or not the steps of the data match (step S1).
7). If they match, the pointer of the automatic chord progression data is incremented (step S18), and the read chord data is input (step S1).
9).

On the other hand, if the automatic chord progression is not turned on in step S15, the steps do not match in step S17, or the code is input in step S19 (step S19), the pattern data indicated by the pointer is read. Is performed (step S20).

After that, it is judged whether the step of the data coincides with the internal step (step S2).
1) If they do not match, the process returns to step 2 through other processing (step S25) and the subsequent steps are repeated.

On the other hand, if the data step matches the internal step in step S21, the pattern data reading pointer is advanced to the next data (step S22).

Next, the chord data is added to generate the pronunciation data (step S23). The pronunciation process is performed based on the pronunciation data created in this way (step S
24).

Thereafter, other necessary processing (step S
After performing 25), the panel scan (step S2) and the subsequent processes are repeated.

In step S13 of the above-mentioned main routine, it is determined whether or not the timer processing has been completed. A subroutine relating to the timer processing in this case is shown in FIG.

When this timer process starts, the step is incremented (step S31). Next, it is judged whether or not the step is the end of the bar (step S32).

If the step is the end of a bar,
Undo the step (that is, the beginning of the bar) (step S
33). After that, or when it is not the end of the measure in the determination of step S32, the step processing completed flag is set (step S34), the subroutine is ended, and at the same time, the step processing of the main routine is permitted.

[0073]

As described in detail above, according to the present invention,
In the playing process, when the rhythm style is changed, the content or combination of chords can be changed accordingly.

In particular, even for a stringed instrument having no keyboard, for example, an electric guitar, chords can be easily switched during the performance, and a performance according to a wide range of performance styles can be performed.

The automatic accompaniment device for an electronic / electrical musical instrument according to the present invention is particularly effective for an electric musical instrument having no keyboard. It can be performed by an operator. Therefore, it is possible to use both hands for playing the melody, and it is possible to perform a higher performance.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of an electronic musical instrument according to the present invention.

FIG. 2 is an explanatory diagram of stored contents of a memory regarding automatic accompaniment data in the electronic musical instrument according to the present invention.

FIG. 3 is an explanatory diagram of stored contents of a foot switch memory in the electronic musical instrument according to the present invention.

FIG. 4 is an explanatory diagram showing a configuration example of a foot switch.

FIG. 5 is a flowchart (1) showing a main routine of the electronic musical instrument according to the present invention.

FIG. 6 is a flowchart (2) showing a main routine of the electronic musical instrument according to the present invention.

FIG. 7 is a flowchart showing a subroutine relating to timer processing of an electronic musical instrument according to the present invention.

[Explanation of symbols]

 10 data bus 11 CPU 12 RAM 13 program memory 14 accompaniment pattern data memory 15 foot switch memory 16 foot switch interface 17 foot switch 18 panel interface 19 panel switch 20 tone signal generation circuit 21 amplifier

Claims (3)

[Claims] 1. An automatic accompaniment device for an electronic / electrical musical instrument, comprising a table of use chord information corresponding to each of a plurality of rhythm style data, and allocating the chord information to a plurality of operating means. When any rhythm style in the rhythm styles is selected, the chord information can be input by operating any of the operating means to enable chord switching in real time while playing an electronic or electric musical instrument. This is an automatic accompaniment device for electronic and electric musical instruments. 2. The automatic accompaniment apparatus for an electronic / electrical musical instrument according to claim 1, wherein the electronic / electrical musical instrument is a stringed musical instrument. 3. The automatic accompaniment apparatus for an electronic / electrical musical instrument according to claim 1, wherein the electronic / electrical musical instrument is a keyboard musical instrument.