JP4222257B2 - Accompaniment adding device - Google Patents

Description

  The present invention relates to an accompaniment adding device, and more particularly to an accompaniment adding device for adding an accompaniment suitable for performance using a turntable.

  2. Description of the Related Art Conventionally, an electronic musical instrument equipped with a function called “Arpeggiator” has been known. FIG. 8 shows a general circuit configuration for realizing this type of function. The electronic musical instrument includes a keyboard 18, an arpeggio generation circuit 48, a sound source 58, an amplifier 78, a speaker 88, and the like. When a signal indicating that the keyboard 18 has been pressed is supplied to the arpeggio generation circuit 48, the arpeggio generation circuit 48 instructs the sound source to sound the sound indicated by the supplied signal, and then associates it with the pitch in advance. The generation of sounds having different pitches is sequentially instructed at predetermined intervals. For example, just by pressing the “do” key, the speaker 88 sequentially outputs the musical tones constituting a chord such as “do, mi, so, do, so, mi, so, do”. . Thereby, even if a performer does not perform a complicated performance, a distributed chord is sounded appropriately.

  As a document disclosing a technique for further optimizing the function of the arpeggiator, for example, there is Patent Document 1. This document discloses an electronic musical instrument that realizes automatic performance in which rhythm performance and arpeggio performance are harmonized. According to this document, this musical instrument first detects the musical timing of the first rhythm performance or arpeggio performance that has different performance start triggers. Musical timing is the start timing of a knot or beat. Thereafter, when the start of the other performance is instructed, the musical timing of the performance started later is synchronized with the one started earlier.

A technique for automatically generating an accompaniment that harmonizes with a musical tone output from a musical instrument that is being played by applying the arpeggiator function described above has been developed. As a document disclosing this kind of technology, for example, there is Patent Document 2. This document discloses an automatic accompaniment apparatus that automatically generates an accompaniment according to a melody played. According to this document, this automatic accompaniment device prepares in advance melody added as an accompaniment sound to the performance sound of the musical instrument as accompaniment data, and when the performance is performed by the performer, the pitch and volume are calculated from the performance sound. Is detected. The pitch of the accompaniment data is adjusted according to the pitch detected from the performance sound, and the volume of the accompaniment data is adjusted according to the volume detected from the performance sound.
JP 2000-258847 A JP 05-27750 A

By the way, there is a performance technique that uses a record player, which is a device primarily intended for analog record reproduction, as a musical instrument. This kind of performance technique is performed by a player called a disc jockey (DJ). In such a performance technique, a disc jockey who is a performer reproduces a record placed on a turntable of a record player while intermingling improvised lyrics and lines. A variety of musical expressions are expressed by suddenly accelerating the rotation speed of the record being played with his / her fingers, stopping the rotation, or reversing the rotation. Record players used for this type of performance are often simply called turntables.
Of course, even in such a performance technique, it is said that a higher production effect can be expected by adding a harmonious accompaniment to the performance sound expressed by the record player.

However, this kind of performance technique has been devised on the assumption that the performance of the disc jockey is a series of single notes because it has the special situation that a musical expression is expressed by the speed of the rotation of the record. In addition, it is difficult to generate and add an accompaniment that is in harmony with the performance sound only by adopting the above-described conventional technology.
The present invention has been devised under such a background, and an object thereof is to provide an apparatus for automatically generating an accompaniment that enhances the performance effect of a performance using a record player.

The accompaniment adding apparatus according to a preferred aspect of the present invention comprises performance sound data input means for sequentially inputting musical sound data of performance sounds output from a musical sound reproducing apparatus whose performance can be changed by a performer, and the input musical sound. Detecting means for detecting an attribute value indicating characteristics of a performance sound from the data; accompaniment sound data generating means for generating musical tone data of an accompaniment sound based on the attribute value when the attribute value is detected; and the accompaniment Timing adjustment means for adjusting the output timing of the musical sound data generated by the sound data generation means in accordance with a predetermined timing; and accompaniment sound data output means for outputting musical sound data whose timing is adjusted by the timing adjustment means; wherein the determined timing in advance, a divided timing obtained by equally dividing the certain predetermined time, said timing adjustment means, wherein The timing of the output of the tone data of the generated accompaniment tone based on the sexual value, the attribute value is synchronized with the division timing that arrives immediately after being detected, the detecting means, and equally dividing the certain predetermined time The pitch of the performance sound at each time is detected as the attribute value, and the accompaniment sound data generation means generates volume instruction data indicating the volume of the accompaniment sound based on the detected pitch, and the generated volume instruction data It is included in the musical tone data of the accompaniment sound.
Further, an accompaniment adding device according to another preferred embodiment of the present invention comprises performance sound data input means for sequentially inputting musical sound data of performance sounds output from a musical sound reproducing device whose performance can be changed by a performer, Detection means for detecting an attribute value indicating the characteristic of the performance sound from the input musical sound data, and accompaniment sound data generation means for generating musical sound data of an accompaniment sound based on the attribute value when the attribute value is detected Timing adjustment means for adjusting the output timing of the musical sound data generated by the accompaniment sound data generation means in accordance with a predetermined timing; and accompaniment sound for outputting musical sound data whose timing is adjusted by the timing adjustment means Data output means, and the predetermined timing is a division timing obtained by equally dividing a predetermined time, and the timing adjustment Synchronizes the timing of the output of the musical sound data of the accompaniment sound generated based on the attribute value with the division timing that comes immediately after the attribute value is detected, and the detection means equalizes the predetermined time period. And the accompaniment sound data generating means generates pitch instruction data indicating the pitch of the accompaniment sound based on the detected sound volume, and the generated pitch. The instruction data is included in the musical tone data of the accompaniment sound.

In addition, accompaniment sound generation condition input means for inputting an accompaniment sound generation condition when generating musical sound data of accompaniment sounds is provided, and the accompaniment sound data generation means includes the detected attribute value and the input accompaniment sound generation The musical tone data of the accompaniment sound may be generated according to the conditions.
In these aspects, when musical sound data is input from the performance sound data input means, performance sound loop processing means for superimposing feedback data of the musical sound data on musical sound data input later from the performance sound data input means; When the musical sound data is output from the accompaniment sound data output means, it is possible to provide accompaniment sound loop processing means for superimposing feedback data of the musical sound data on the musical sound data output later from the accompaniment sound data output means.

Loop condition input means for inputting a loop condition for obtaining feedback data from the musical sound data, wherein the performance sound loop processing means and the accompaniment sound loop processing means are inputted to the inputted musical sound data. Feedback data may be acquired by performing processing according to the loop condition .

Furthermore, before Symbol accompaniment sound data generating means, pitch data indicating the tone or pattern of accompaniment tones and the detected, generated based volume or both, containing the generated data to the tone data of the accompaniment tone You may make it make it.

  According to the present invention, an accompaniment that enhances the performance effect of a performance using a record player can be automatically generated according to the content of the performance itself.

(First embodiment)
A first embodiment of the present invention will be described.
In this embodiment, the present invention is incorporated into a performance using a record player as a musical instrument. The first feature of the accompaniment adding device according to the present embodiment is a secondary feature that reinforces the performance sound based on the musical sound produced by the record player itself (hereinafter referred to as “performance sound”). Music sound (hereinafter referred to as “accompaniment sound”) is automatically generated and emitted from the speaker together with the performance sound. The second feature is that the volume of the automatically generated accompaniment sound is increased in proportion to the pitch of the performance sound, while the pitch of the accompaniment sound is proportional to the volume of the performance sound. It is the point which made it become high.
In the following description, the term “musical sound data” is used to generically refer to analog waveform data and digital waveform data representing a musical sound waveform. The player of the record player is called a “disc jockey”.

FIG. 1 is a block diagram showing a configuration of an accompaniment adding apparatus according to the present embodiment.
The accompaniment adding apparatus includes a record player 1, an accompaniment sound generation condition input unit 2, an analog / digital converter (hereinafter referred to as “A / D converter”) 3, a control unit 4, a sound source 5, an adder 6, and an amplifier 7. The speaker 8 is provided.
The record player 1 has a turntable, a motor, an amplifier, a tone arm, a cartridge, a fader volume, etc. (not shown). When the needle of the cartridge mounted on the tone arm comes into contact with the groove of the record on the turntable that is rotating under the action of the motor, the analog waveform data picked up by that cartridge is output from the amplifier as musical tone data for the performance sound. Is output. The amplification factor when passing through the amplifier can be adjusted by the fader volume.

A performance using the record player 1 by a disc jockey is performed as follows.
First, after placing a record on the turntable of the record player 1, the disc jockey moves the tone arm cartridge to the record, turns on the power, and starts reproducing the record. When the desired timing is reached, the record is quickly swung in the forward / reverse direction by the user's fingers. This operation is called “scratch”. When the record is rocked by scratches, a special performance sound is created. The disc jockey can control the pitch of the performance sound by adjusting the speed at which the record is scratched. That is, if the speed at which the record is scratched is increased, a performance sound with a higher pitch is created, while if the speed at which the record is scratched is decreased, a performance sound with a lower pitch is created. The disc jockey can also control the volume of the performance sound by operating the fader volume when scratching.

The musical sound data of the performance sound output from the amplifier of the record player 1 is directly supplied to the adder 6, while being converted into digital waveform data by the A / D converter 3 and then supplied to the control unit 4. The
The accompaniment sound generation condition input unit 2 inputs an accompaniment sound generation condition to be referred to when generating an accompaniment sound from a performance sound. The accompaniment sound generation conditions are the correspondence between the pitch of the performance sound and the volume of the accompaniment sound generated according to the pitch, and the correspondence between the volume of the performance sound and the pitch of the accompaniment sound generated according to the volume It is a parameter that represents the relationship. As shown at the beginning, the accompaniment adding device according to the present embodiment performs control such that the volume of the accompaniment sound is increased in proportion to the pitch of the performance sound, and the volume of the performance sound is increased. Control is performed so that the pitch of the accompaniment sound is increased in proportion to. From the accompaniment sound generation condition input unit 2, a constant for reflecting the pitch of the performance sound on the volume of the accompaniment sound, or the volume of the performance sound on the pitch of the accompaniment sound. Enter the constants to reflect.

The control unit 4 includes a RAM, a ROM, a CPU, and the like (not shown). The CPU executes a program stored in the ROM while using the RAM as a work area, whereby the detection unit 41 and the accompaniment sound data generation unit 42 are performed. The functional modules of the timing adjustment unit 43 and the accompaniment sound data output unit 44 are realized. In addition, an area for storing parameters input as accompaniment sound generation conditions from the accompaniment sound generation condition input unit 2 is secured in the RAM.
Each of these functional modules will be described. First, the detection unit 41 detects, from the analog waveform data supplied from the A / D converter 3, the pitch and volume, which are attribute values indicating the characteristics of the performance sound, and detects them. The accompaniment sound data generation unit 42 is supplied. The accompaniment sound data generation unit 42 determines the pitch and volume of the accompaniment sound based on the contents of the pitch and volume supplied from the detection unit 41, and instructs MIDI (musical instrument digital) to instruct the pronunciation at the determined pitch and volume. interface) generate data. When the performance by the record player 1 starts, the timing adjustment unit 43 performs the detection timing by the detection unit 41 and the accompaniment sound data output unit 44 every time length obtained by equally dividing a predetermined time (for example, one measure) into 16 times. A synchronization signal for synchronizing the timing of data output is generated. The predetermined time may be 4 bars or 16 bars. In the following description, the timing at which the timing adjustment unit 43 generates the synchronization signal is referred to as a quantization timing QT. The accompaniment sound data output unit 44 outputs MIDI data at a timing that coincides with the quantization timing QT with the support of the timing adjustment unit 43.

FIG. 2 is a flowchart showing the behavior of the control unit 4.
In step 10, the detection unit 41 detects the pitch and volume from the waveform of the musical tone indicated by the digital waveform data supplied from the A / D converter 3, and supplies them to the accompaniment sound data generation unit 42.
In step 11, the accompaniment sound data generation unit 42 determines the volume of the accompaniment sound according to the pitch supplied from the detection unit 41 and the accompaniment sound generation conditions. Furthermore, in step 12, the accompaniment sound data generation part 42 determines the pitch of an accompaniment sound according to the volume supplied from the detection part 41 and the accompaniment sound generation conditions. In step 13, MIDI data for instructing the sound generation of the accompaniment sound at the volume determined in step 11 and the pitch determined in step 12 is generated. After the generation of the MIDI data in this step, when the quantization timing QT arrives, the process proceeds to step 14 where the accompaniment sound data output unit 44 outputs the MIDI data to the sound source 5. This MIDI data represents a key-on MIDI message, and includes velocity data instructing key-on at the volume determined in step 11 and note number data instructing key-on at the pitch determined in step 12. . When step 14 ends, the process returns to step 10 again and the subsequent processing is repeated.

When MIDI data is output from the accompaniment sound data output unit 44 to the sound source 5, analog waveform data of a sound designated by the MIDI data is output from the sound source 5 as musical sound data of the accompaniment sound.
The musical sound data of the accompaniment sound output from the sound source 5 is mixed with the musical sound data of the performance sound by the adder 6, amplified by the amplifier 7, and then supplied to the speaker 8. The speaker 8 emits a musical sound synthesized based on the musical sound data of the performance sound and the musical sound data of the accompaniment sound.
According to this embodiment described above, the accompaniment sound that preferably produces the performance sound produced by the record player 1 can be automatically generated based on the pitch and volume extracted from the performance sound. The volume of the accompaniment sound that is automatically generated increases in proportion to the pitch of the performance sound, while the pitch of the accompaniment sound increases in proportion to the volume of the performance sound. Therefore, as the disc jockey performs scratching at a higher speed, the volume of the accompanying accompaniment sound increases, so an accompaniment that emphasizes the musical expression created by the performance of the record player can be obtained very easily. . Also, accompaniment with different effects can be obtained by changing the type of record placed on the turntable and played back.

(Second Embodiment)
A second embodiment of the present invention will be described. The feature of this embodiment is that the musical tone data of the performance sound and the musical tone data of the accompaniment sound are subjected to predetermined delay processing and then mixed.
FIG. 3 is a block diagram showing the configuration of the accompaniment adding apparatus according to the present embodiment. The accompaniment adding apparatus according to the present embodiment includes a loop condition input unit 9 and a D / A converter 10 in addition to the units shown in FIG. In addition to the detection unit 41, the accompaniment sound data generation unit 42, the timing adjustment unit 43, and the accompaniment sound data output unit 44, the control unit 4 of the accompaniment addition device includes a performance sound loop processing unit 45 and an accompaniment sound loop processing unit. 46 is realized.

The performance sound loop processing unit 45 and the accompaniment sound loop processing unit 46 are both configured as shown in FIG. That is, the input data is delayed over the delay time d by the delay unit 48 and becomes feedback data that has been attenuated by the predetermined attenuation rate g by the attenuation unit 49. Superimposed. From the loop condition input unit 9, the delay time d and the attenuation rate g described above are input in advance as loop conditions.
In the performance sound adding apparatus having such a configuration, musical sound data of performance sound input as analog waveform data from the record player 1 is converted into digital waveform data by the A / D converter 3 and then supplied to the detection unit 41. The The musical sound data of the performance sound input to the detection unit 41 is output from the accompaniment sound data output unit 44 as MIDI data for instructing the pronunciation of the accompaniment sound after the processing of Step 10 to Step 14 shown in FIG. . When the MIDI data is input to the accompaniment sound loop processing unit 46, the feedback data of the MIDI data previously input to the same unit is superimposed and output to the sound source 5. Further, when new MIDI data obtained by superimposing the feedback data is input to the sound source 5, analog waveform data of the sound designated by the new MIDI data is supplied from the sound source 5 to the adder 6.

On the other hand, the musical sound data of the performance sound converted into digital waveform data by the A / D converter 3 is also supplied to the performance sound loop processing unit 45. The digital waveform data input to the performance sound loop processing unit 45 is superimposed with the feedback data of the data previously input to the same part. The new digital waveform data obtained by superimposing the feedback data is converted to analog waveform data by the D / A converter 10 and then supplied to the adder 6.
Both analog waveform data supplied from the D / A converter 10 and the sound source 5 are mixed by the adder 6, amplified by the amplifier 7, and then supplied to the speaker 8. The speaker 8 emits a musical sound synthesized based on the musical sound data of the performance sound that has been subjected to the loop processing and the musical sound data of the accompaniment sound.
According to this embodiment described above, “loop music” frequently used in performance using a record player can be realized very easily.

(Third embodiment)
A third embodiment of the present invention will be described. The feature of this embodiment is that not only the volume of the accompaniment sound is controlled according to the pitch extracted from the performance sound, but also the output volume of the performance sound itself is controlled according to the pitch.
FIG. 5 is a block diagram showing the configuration of the accompaniment adding apparatus according to the present embodiment. The control unit 4 of the accompaniment adding device according to the present embodiment realizes an arithmetic addition unit 47.

In the performance sound adding apparatus having such a configuration, musical sound data of performance sound output as analog waveform data from the record player 1 is converted into digital waveform data by the A / D converter 3 and then supplied to the detection unit 41. The 2 is output from the accompaniment sound data output unit 44 as MIDI data for designating the sound of the accompaniment sound. At that time, the pitch detected in step 12 is supplied to the arithmetic addition unit 47.
On the other hand, the musical tone data of the performance sound converted into digital waveform data by the A / D converter 3 is also supplied to the arithmetic addition unit 47. The arithmetic addition unit 47 adjusts the volume of the digital waveform data input from the A / D converter 3 by performing arithmetic processing according to the pitch supplied from the detection unit 41. The digital waveform data whose volume is adjusted by the arithmetic adder 47 is converted into analog waveform data by the D / A converter 10 and then supplied to the adder 6, and the analog waveform data output from the sound source 5 and It is mixed.
According to the present embodiment described above, not only the volume of the accompaniment sound is controlled according to the pitch extracted from the performance sound, but also the output volume of the performance sound itself is controlled according to the pitch. Therefore, the performance effect of the performance using the record player can be further enhanced.

(Other embodiments)
The present invention can be modified in various ways.
In each of the embodiments described above, the volume of the accompaniment sound is controlled to increase according to the pitch of the performance sound, and the pitch of the accompaniment sound is controlled to increase according to the volume of the performance sound. On the other hand, the volume of the accompaniment sound may be decreased in inverse proportion to the pitch of the performance sound, or the pitch of the accompaniment sound may be decreased in inverse proportion to the volume of the performance sound. . In short, it is only necessary that the pitch of the accompaniment sound is determined according to the volume of the performance sound, and the volume of the accompaniment sound is determined according to the pitch of the performance sound.
In the above embodiment, only the pitch and the volume of the accompaniment sound are controlled according to the pitch and the volume detected from the performance sound. However, the pitch and the volume detected from the performance sound for other attributes of the accompaniment sound. You may control according to. For example, parameters such as accompaniment tone color and accompaniment tone pattern are determined based on the pitch, volume, or both detected from the performance tone, and parameters for instructing the pronunciation of the accompaniment tone in the determined tone color or pattern May be included in the MIDI data generated by the accompaniment sound data generation unit 42.
In the above-described embodiment, the sound source 5 and the addition unit 6 are provided outside the control unit 4, and the musical sound data of the performance sound and the accompaniment sound output as analog waveform data are mixed. On the other hand, as shown in FIG. 6, the control unit 4 logically realizes the sound source 5 and the addition unit 6 and digitally mixes the musical tone data of the performance sound and the musical tone data of the accompaniment sound in the control unit 4. Later, D / A conversion may be performed and output to the amplifier 7. Further, as shown in FIG. 7, a digital sound source 5d is provided outside the control unit 4, and digital waveform data corresponding to the MIDI data output from the accompaniment sound data output unit 44 is acquired from the digital sound source 5d, and the performance sound is recorded. Musical sound data and digital mixing may be performed.
In the above embodiment, the timing adjustment unit 43 generates the synchronization signal for every time length obtained by equally dividing one measure into 16 parts. However, even if it occurs every 32 time lengths, the time length is divided into 8 parts. It may occur every time.
In the above-described embodiment, the MIDI data output timing by the accompaniment sound data output unit 44 is controlled to coincide with the quantization timing QT. In accordance with the timing QT, the accompaniment sound data output unit 44 may immediately output the generated MIDI data in real time. In short, it is only necessary that the accompaniment sound emission timing based on the MIDI data can coincide with a predetermined timing under the control of the timing adjustment unit 43.

It is a block diagram of an accompaniment addition apparatus (1st Embodiment). It is a flowchart which shows the behavior of a control part. It is a block diagram of an accompaniment addition apparatus (2nd Embodiment). It is a block diagram of a loop process part. It is a block diagram of an accompaniment addition apparatus (3rd Embodiment). It is a block diagram of an accompaniment addition apparatus (modification). It is a block diagram of an accompaniment addition apparatus (modification). It is a block diagram of the electronic musical instrument carrying an arpeggiator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Record player, 2 ... Accompaniment sound generation condition input part, 3 ... A / D converter, 4 ... Control part, 5 ... Sound source, 6 ... Adder, 7 ... Amplifier, 8 ... Speaker, 9 ... Loop condition input part DESCRIPTION OF SYMBOLS 10 ... D / A converter, 41 ... Detection part, 42 ... Accompaniment sound data generation part, 43 ... Timing adjustment part, 44 ... Accompaniment sound data output part, 45 ... Performance sound loop process part, 46 ... Accompaniment sound loop process Part, 47 ... calculation addition part

Claims (6)

Performance sound data input means for sequentially inputting musical sound data of performance sounds output from a musical sound reproduction device whose performance can be changed by the performer;
Detecting means for detecting an attribute value indicating the characteristic of the performance sound from the input musical sound data;
When the attribute value is detected, accompaniment sound data generating means for generating musical tone data of the accompaniment sound based on the attribute value;
Timing adjusting means for adjusting the output timing of the musical sound data generated by the accompaniment sound data generating means in accordance with a predetermined timing;
An accompaniment adding device comprising: accompaniment sound data output means for outputting musical sound data whose timing is adjusted by the timing adjusting means ;
The predetermined timing is a division timing obtained by equally dividing a predetermined time,
The timing adjusting means includes
The timing of the output of the musical tone data of the accompaniment sound generated based on the attribute value is synchronized with the division timing that comes immediately after the attribute value is detected,
The detection means includes
Detecting the pitch of the performance sound at each time obtained by equally dividing the predetermined time as the attribute value;
The accompaniment sound data generating means includes:
An accompaniment adding device that generates volume instruction data for instructing the volume of an accompaniment sound based on the detected pitch, and includes the generated volume instruction data in the musical sound data of the accompaniment sound . Performance sound data input means for sequentially inputting musical sound data of performance sounds output from a musical sound reproduction device whose performance can be changed by the performer;
Detecting means for detecting an attribute value indicating the characteristic of the performance sound from the input musical sound data;
When the attribute value is detected, accompaniment sound data generating means for generating musical tone data of the accompaniment sound based on the attribute value;
Timing adjusting means for adjusting the output timing of the musical sound data generated by the accompaniment sound data generating means in accordance with a predetermined timing;
Accompaniment sound data output means for outputting musical sound data whose timing is adjusted by the timing adjustment means;
In an accompaniment adding device with
The predetermined timing is a division timing obtained by equally dividing a predetermined time,
The timing adjusting means includes
The timing of the output of the musical tone data of the accompaniment sound generated based on the attribute value is synchronized with the division timing that comes immediately after the attribute value is detected,
The detection means includes
Detecting the volume of the performance sound at each time equally dividing the predetermined time as the attribute value;
The accompaniment sound data generating means includes:
Pitch instruction data indicating the pitch of the accompaniment sound is generated based on the detected volume, and the generated pitch instruction data is included in the musical sound data of the accompaniment sound.
Accompaniment adding device. The accompaniment adding device according to claim 1 or 2,
An accompaniment sound generation condition input means for inputting an accompaniment sound generation condition when generating musical sound data of the accompaniment sound;
The accompaniment sound data generating means includes:
An accompaniment adding device that generates musical tone data of an accompaniment sound according to the detected attribute value and the input accompaniment sound generation condition. The accompaniment adding device according to any one of claims 1 to 3,
When musical tone data is input from the performance sound data input means, performance sound loop processing means for superimposing feedback data of the musical sound data on musical sound data input later from the performance sound data input means;
An accompaniment adding device comprising: accompaniment sound loop processing means for superimposing feedback data of the musical sound data on musical sound data output later from the accompaniment sound data output means when musical sound data is outputted from the accompaniment sound data output means. The accompaniment adding device according to claim 4,
Provided with loop condition input means for inputting loop conditions for obtaining feedback data from musical sound data,
The performance sound loop processing means and the accompaniment sound loop processing means are:
An accompaniment adding device that acquires feedback data by performing processing according to the input loop condition on the input or output musical sound data. The accompaniment adding apparatus according to any one of claims 1 to 5 ,
The accompaniment sound data generating means includes:
An accompaniment adding device that generates data indicating the tone color or pattern of an accompaniment sound based on the detected pitch, volume, or both, and includes the generated data in the musical tone data of the accompaniment sound.

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