JP3680776B2 - Performance information processing apparatus, method and program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a performance information processing apparatus, and more particularly to a performance information processing apparatus that appropriately edits a volume balance of performance information.
[0002]
[Prior art]
If music data such as MIDI data containing only note information is played by an automatic performance device or the like, the performance becomes mechanical and expressionless. In order to make this a more natural performance, it is necessary to add various musical expressions and performance expressions to the music data as control data.
[0003]
For example, for a piano tone MIDI data played with multiple sounds, distinguishing the melody sound from the harmony sound, and adding a performance expression by controlling the volume balance so that the melody sound is larger and the harmony sound is smaller. Is effective.
[0004]
[Problems to be solved by the invention]
When human beings look at a score and perform it, if it is a multi-score score, they can balance the volume while listening to their performance. However, in order for an automatic performance device such as a computer to perform with a natural volume balance, it is necessary to add a performance expression to the music data in advance in consideration of the volume balance.
[0005]
In order to add volume balance to music data such as MIDI data, it is necessary to be familiar with the characteristics of music and the handling of music data. Further, even for those who are familiar with such things, it is complicated and time-consuming to manually change the volume balance.
[0006]
An object of the present invention is to provide a performance information processing apparatus capable of automatically and easily adding performance expressions to music data.
[0007]
[Means for Solving the Problems]
According to one aspect of the present invention, the performance information processing apparatus includes a plurality of note data for which start of sound generation is specified simultaneously or substantially simultaneously and other note data for which start of sound generation is specified simultaneously or substantially simultaneously. Extracting the note data of a single note from the music data, and comparing the pitches of the plurality of extracted note data, the highest note part, the lowest voice part and other voice parts of each of the plurality of note data Comparing the extracted single note data with the plurality of note data classified by the first classification means, and extracting the extracted single note data to the highest A second classifying unit that classifies the voice part, the lowest voice part, and the other voice part, and the plurality of note data and single note data according to the classification by the first and second classifying units. Pronunciation volume And a control means for controlling.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a block diagram showing a hardware configuration of a computer or an electronic musical instrument constituting a performance information processing apparatus 1 according to an embodiment of the present invention.
[0009]
The performance information processing apparatus 1 includes a bus 2, a ROM 3, a RAM 4, a CPU 5, a timer 6, an external storage device 7, a detection circuit 8, a setting operator 9, a performance operator 10, a display circuit 11, a display 12, a sound source circuit 13, and an effect circuit. (DSP) 14, sound system 15, MIDI interface 16, and communication interface 18.
[0010]
Connected to the bus 2 are ROM 3, RAM 4, CPU 5, timer 6, external storage device 7, detection circuit 8, display circuit 11, tone generator circuit 13, DSP 14, MIDI interface 16, MIDI device 17, and communication interface 18.
[0011]
The ROM 3 can store various parameters, a control program, music data, a program for realizing the present embodiment, and the like. In this case, it is not necessary to store programs or the like in the external storage device 7 in an overlapping manner.
[0012]
The RAM 4 has a working area for the CPU 5 that stores flags, registers or buffers, various parameters, and the like.
[0013]
The CPU 5 performs calculation or control according to a control program or the like stored in the ROM 3 or the external storage device 7. The timer 6 supplies a basic clock signal, interrupt processing timing, and the like to the CPU 5.
[0014]
The external storage device 7 includes an interface for an external storage device, and is connected to the bus 2 via the interface. The external storage device 7 includes, for example, a floppy (registered trademark) disk drive (FDD), a hard disk drive (HDD), a magneto-optical disk (MO) drive, a CD-ROM (compact disk-read only memory) drive, and a DVD (Digital Versatile Disc). ) Drive, semiconductor memory, etc.
[0015]
The external storage device 7 can store music data, various parameters, various data, a program for realizing the present embodiment, and the like.
[0016]
The music data is, for example, automatic music data compliant with the SMF (Standard MIDI File) format, initial setting information recorded at the beginning, timing data representing the sound generation timing, event data representing an event at each timing, It is comprised including. The music data MD can also be composed of a plurality of tracks.
[0017]
When a hard disk drive (HDD) is connected as the external storage device 7, a control program or a program for realizing the present embodiment may be stored in the hard disk (HDD) in the external storage device 7. it can. By reading the control program or the like from the hard disk into the RAM 4, the CPU 5 can be operated in the same manner as when the control program or the like is stored in the ROM 3. In this way, it is possible to easily add or upgrade a control program or the like.
[0018]
When a CD-ROM drive is connected in addition to the hard disk drive, a control program or a program for realizing the present embodiment can be stored in the CD-ROM. A control program, a program for realizing the present embodiment, and the like can be copied from the CD-ROM to the hard disk. New installation and version upgrade of control programs and the like can be easily performed.
[0019]
The setting operator 9 is connected to the detection circuit 8 and is, for example, a character input keyboard, mouse, rotary encoder, switch, pad, fader, slider, performance keyboard, joystick, jog shuttle, etc. Any device that can output a corresponding signal may be used.
[0020]
The setting operator 9 may be a soft switch or the like displayed on the display 12 that is operated using another operator such as a mouse.
[0021]
The performance operator 10 is connected to the detection circuit 8 and supplies a performance signal according to a user's performance operation. As the performance operator 10, a performance keyboard, pad, or the like can be used. The performance operator 10 is not limited to these, and any performance operator 10 may be used as long as the user can input performance information. For example, a keyboard for inputting characters, a mouse, a joystick, or the like can be used as the performance operator 10.
[0022]
The display circuit 11 is connected to the display 12 and can display various information on the display 12. The user refers to the information displayed on the display 12 and inputs various information and makes various settings. The display 12 can display information related to music data, music scores, and the like. The display 12 may be configured by connecting an external display device.
[0023]
Further, a touch panel can be used for the display 12. In this case, the user can input a user instruction by pressing a switch or the like displayed on the display 12, so that the setting operator 9 can also function.
[0024]
The tone generator circuit 13 generates a musical tone signal in accordance with music data recorded in the external storage device 7, ROM 3 or RAM 4, or the like, a performance signal supplied from a MIDI device 17 connected to the MIDI interface 16, or a MIDI signal. , And supplied to the sound system 15 via the DSP 14.
[0025]
The DSP 14 gives various musical effects to the musical sound signal supplied from the sound source circuit 13.
[0026]
The sound system 15 includes a D / A converter and a speaker, converts a digital musical tone signal supplied to an analog format, and generates a sound.
[0027]
The tone generator circuit 13 is an analog synthesizer such as a waveform memory method, FM method, physical model method, harmonic synthesis method, formant synthesis method, VCO (Voltage Controlled Oscillator) + VCF (Voltage Controlled Filter) + VCA (Voltage Controlled Amplifier). Any method may be used.
[0028]
Further, the tone generator circuit 13 is not limited to the one configured using dedicated hardware, but may be configured using a DSP (Digital Signal Processor) + microprogram, or may be configured using a CPU + software program. Or it can be something like a sound card.
[0029]
Further, a plurality of tone generation channels may be formed by using one tone generator circuit in a time-sharing manner, or a plurality of tone generation circuits may be formed by using one tone generator circuit for each tone generation channel. You may make it comprise.
[0030]
The MIDI interface (MIDI I / F) 16 can be connected to a MIDI device 17, other musical instruments, audio devices, computers, and the like, and can transmit and receive at least MIDI signals. The MIDI interface 16 is not limited to a dedicated MIDI interface, and may be configured using a general-purpose interface such as RS-232C, USB (Universal Serial Bus), IEEE 1394 (Eye Triple E 1394). In this case, data other than MIDI messages may be transmitted and received simultaneously.
[0031]
The MIDI device 17 is an acoustic device, a musical instrument or the like connected to the MIDI interface 16. The form of the MIDI device 17 is not limited to a keyboard instrument, and may be a string instrument type, a wind instrument type, a percussion instrument type, or the like. In addition, the sound source device, the automatic performance device, etc. are not limited to those built in one electronic musical instrument body, but each is a separate device, and each device is connected using a communication process such as MIDI or various networks. There may be. The user can also input performance information by playing (manipulating) the MIDI device 17.
[0032]
The MIDI device 17 can also be used as an operator for inputting various data other than performance information and various settings.
[0033]
The communication interface 18 can be connected to a communication network 19 such as a LAN (local area network), the Internet, or a telephone line. The communication interface 18 is connected to a server computer via the communication network 19 and the external storage device 7 such as an HDD, or the RAM 4. The music data, the control program, the program for realizing the present embodiment, and the like can be downloaded from the server computer.
[0034]
The communication interface 18 and the communication network 19 are not limited to wired ones and may be wireless. Moreover, you may provide both.
[0035]
FIG. 2 is a flowchart showing a main process performed by the performance information processing apparatus 1.
[0036]
In step SA1, the main process is started, and the process proceeds to the next step SA2.
[0037]
In step SA2, various flags and buffers in the RAM 4 are cleared and initial setting is performed. Thereafter, the process proceeds to next Step SA3.
[0038]
In step SA3, music data for performing music data processing according to this embodiment is selected. The music data is selected, for example, by displaying a list of music data stored in the external storage device 7 or the like on the display 12 or the like, and the user refers to it and selects it with the setting operator 9 or the like. The selected music data is read into the RAM 4. Thereafter, the process proceeds to next Step SA4.
[0039]
In step SA4, the operation status of the setting operator 9 is received, and device settings, music data processing processing settings according to this embodiment, instructions for automatic performance, and other settings are executed. For example, a target track of music data to be subjected to music data processing described later is selected. The target track may be single or plural. In addition, a range (processing range) for performing processing in the target track is set. The processing range may be all or a part of the target track. Thereafter, the process proceeds to next Step SA5.
[0040]
In step SA5, the music data processing which will be described later with reference to FIG. 3 is performed on the music data selected and read in step SA3. Thereafter, the process proceeds to Step SA6.
[0041]
In step SA6, a performance signal is generated based on the music data processed in step SA5, other music data, or performance information input by the performer via the performance operator 10. Thereafter, the process proceeds to next Step SA7.
[0042]
In step SA7, the performance signal generated in step SA6 is sent to, for example, the tone generator circuit 13 or the like to generate a musical sound signal, and an effect is added by the DSP 14 and the sound system 15 produces a sound. Thereafter, the process proceeds to the next step SA8 and the main process is terminated.
[0043]
If the reproduction of the music data is not set, after the music data processing process in step SA5, the process proceeds to step SA8 and the main process is terminated.
[0044]
FIG. 3 is a flowchart showing the music data processing performed in step SA5 of FIG.
[0045]
This music data processing is a process for separating and extracting the sound to be emphasized (note data) and the sound that is not so from the music data of multiple sounds, and appropriately controlling the volume balance.
[0046]
Specifically, a note data group that is sounding at the same time is searched, the highest sound is set as the highest voice part (melody line), the lowest sound is set as the lowest voice part (baseline), and the volume is set higher. It is also possible to search for a note data group that starts sounding at the same time or almost at the same time. However, if this is done, inconvenience occurs when the rhythm differs between the upper voice part and the lower voice part.
[0047]
In this specification, the note data group “sounded almost simultaneously” (or “sounding at almost the same time”) is a time difference that is considered to be pronounced musically or audibly simultaneously. A plurality of note data that are sounded by (or become sounding). Also, a series of note groups that are considered musically as chords can be considered as note data groups that are “sounded almost simultaneously”.
[0048]
In the case of a single tone, the volume is determined by determining the highest voice part, the lowest voice part, or another voice part depending on the situation before and after. Of the other voices, the sound that is pronounced at the same time (note data) is considered to be a melody (or decorative sound) with a relatively short length, and the volume is set to a high level. . Otherwise, set the volume to a lower level.
[0049]
In step SB1, music data processing is started, and the process proceeds to next step SB2.
[0050]
In step SB2, it is determined whether the target track selected in step SA4 in FIG. 2 is a single track or a plurality of tracks. In the case of processing for a single track, the process proceeds to step SB3 indicated by a YES arrow. In the case of the processing process over a plurality of tracks, the process proceeds to step SB20 indicated by a NO arrow.
[0051]
In step SB3, a note data group for a predetermined time is extracted as target note data from the processing target track. The extraction of the target note data is sequentially performed from the start timing of the processing range. Thereafter, the process proceeds to the next step SB4.
[0052]
In step SB4, it is detected whether or not there are a plurality of note data to be pronounced at the same time or substantially the same time in the note data group extracted in step SB3. Here, the note data to be detected includes not only data that starts sounding simultaneously (or almost simultaneously) but also a plurality of note data that are sounding at the same time (or almost at the same time). If there is a plurality of note data to be sounded at substantially the same time, the process proceeds to step SB5 indicated by an arrow of YES, and if not, the process proceeds to step SB15 indicated by an arrow of NO.
[0053]
In step SB5, an average sound length of a plurality of note data to be generated at the same time or substantially the same time detected in step SB4 is calculated. Thereafter, the process proceeds to next Step SB6.
[0054]
In step SB6, one piece of note data that has not been specified for processing is extracted from a plurality of note data that are generated at the same time or substantially the same time detected in step SB4. Thereafter, the process proceeds to the next step SB7.
[0055]
In step SB7, it is determined whether or not the tone length of the note data extracted in step SB6 is less than or equal to half the average tone length calculated in step SB5. If the sound length is less than or equal to half of the average sound length, that is, if the sound length is relatively short relative to the surrounding note data, the process proceeds to step SB8 indicated by a YES arrow. If the sound length is not less than half of the average sound length, that is, if the sound length is relatively long, the process proceeds to step SB9 indicated by a NO arrow.
[0056]
In step SB8, note data whose tone length is half or less than the average tone length is processed and specified as a volume enhancement target (melody line). The reason why the note data whose tone length is less than half the average tone length is the volume enhancement target is that they are estimated as the movement of the melody. Note that since it can be determined that the movement is a melody, the determination is not limited to half or less of the average sound length, but may be determined based on other criteria such as one-third, one-fourth or less. Thereafter, the process proceeds to step SB14.
[0057]
In step SB9, it is determined whether or not the pitch of the note data extracted in step SB6 is the highest note in the plurality of note data that are being sounded at the sounding start time of the note data. That is, it is detected whether or not it is the highest note among the plurality of note data detected in step SB4. If it is the highest sound, the process proceeds to step SB10 indicated by a YES arrow. If it is not the highest sound, the process proceeds to step SB11 indicated by a NO arrow.
[0058]
In step SB10, the note data determined to be the highest sound among the plurality of note data being sounded at the sound generation start time in step SB9 is processed and specified as a melody line (highest voice part). In this embodiment, the melody line is a volume enhancement target. Thereafter, the process proceeds to step SB14.
[0059]
In step SB11, it is determined whether or not the pitch of the note data extracted in step SB6 is the lowest note in the plurality of note data that are being sounded at the sounding start time of the note data. That is, it is detected whether or not it is the lowest note among the plurality of note data detected in step SB4. If it is the lowest tone, the process proceeds to step SB12 indicated by a YES arrow. If it is not the lowest tone, the process proceeds to step SB13 indicated by a NO arrow.
[0060]
In step SB12, the note data determined to be the lowest sound among the plurality of note data being sounded at the sound generation start time in step SB11 is processed and specified as a baseline (lowest voice part). In this embodiment, the baseline is a volume enhancement target. Thereafter, the process proceeds to step SB14.
[0061]
In step SB13, the note data extracted in step SB6 is processed and specified as another part (voice part). Since the other voice parts are not targeted for volume enhancement, the volume is set to be weak later. Thereafter, the process proceeds to next Step SB14.
[0062]
In step SB14, it is determined whether or not the processing specification has been completed for all of the plurality of note data detected in step SB4. When the processing specification is completed, the process proceeds to step SB19 indicated by an arrow of YES. If the process identification has not been completed, the process returns to step SB6 indicated by the NO arrow.
[0063]
From Step SB15 to Step SB18, if it is determined in Step SB4 described above that there is no plural note data to be pronounced at the same time or almost the same time in the note data group extracted at Step SB3, that is, this time extraction. This is a process when the target note data is a single note.
[0064]
In step SB15, it is detected whether or not there is any musical note data around the target musical note data already processed and specified as the lowest voice part and the highest voice part. If there is note data that has been processed and specified, the process proceeds to step SB17 indicated by a YES arrow. If there is no note data that has been specified for processing, the process proceeds to step SB16 indicated by an arrow of NO.
[0065]
In step SB16, the processing specification of the target note data is suspended, and the process proceeds to step SB19. In the case of a single note, processing is specified according to multiple note data processed and specified as the lowest voice part and highest voice part around the reference note data, so that processing is performed until other note data is processed and specified. It cannot be specified. Therefore, the processing specification of the target note data is temporarily suspended here.
[0066]
In step SB17, the target note data is compared with the note data of surrounding timing that has already been processed and specified as the lowest voice portion and the highest voice portion. Thereafter, the process proceeds to next Step SB18.
[0067]
The method of comparison is, for example, performing a weighting operation on a plurality of note data processed and specified as the lowest voice part in the front and rear direction of the target note data, the highest voice part and other voice parts, to determine which note is closest, Specify the same voice as the closest note.
[0068]
As a weighting calculation method, for example, note data having the lowest evaluation index value obtained by the following equation (A) is used as note data of the same voice part.
[0069]
Evaluation index = 2 ^ (closeness in time / length of one bar x pitch difference) ... (A)
The time proximity is the difference between the pronunciation end time of the comparison note data and the pronunciation start time of the target note data when compared with the preceding note data, and the target note when compared with the rear note data. This is the difference between the pronunciation end time of the data and the pronunciation start time of the comparative note data.
[0070]
In step SB18, the target note data is processed and specified according to the comparison result in step SB17. Thereafter, the process proceeds to Step SB19.
[0071]
In step SB19, it is determined whether or not the processing specification has been completed for all the note data within the processing range. When the process specification is completed, the process proceeds to step SB22 indicated by an arrow of YES. If the process identification has not been completed, the process returns to step SB3 indicated by the NO arrow.
[0072]
Steps SB20 to SB21 are processes when the target track selected in step SA4 in FIG. 2 is a plurality of tracks. When multiple tracks are selected, the part (voice part) is determined for each track.
[0073]
In step SB20, a plurality of note data to be generated at the same time or almost the same time for each track is acquired. Thereafter, the process proceeds to next Step SB21.
[0074]
In step SB21, the note data acquired in step SB20 are compared to determine the part (voice part) of each track. Thereafter, the process proceeds to Step SB22.
[0075]
In step SB22, the volume of the note data (or track) is changed according to the processing specific result. The volume is changed, for example, by setting the velocity value of the highest voice part (melody line) to +24, the velocity value of the lowest voice part (baseline) to +8, and the velocity values of the other voice parts to -8. . Thereafter, the process proceeds to the next step SB23.
[0076]
In step SB23, the music data whose volume is changed in step SB22 is recorded. In the recording process, the music data temporarily processed may be recorded in a RAM or the like, or may be stored in an external storage device. Further, it may be overwritten on the music data before processing, or may be saved as a separate file. Thereafter, the process proceeds to the next step SB24, and the music data processing process is terminated.
[0077]
As described above, according to the present embodiment, it is possible to designate the note data of the complex (chord) portion of the music data as an appropriate part (voice part) according to each pitch value. In addition, a single sound portion of music data can be designated as an appropriate part by comparing it with surrounding note data.
[0078]
Further, according to the present embodiment, the volume of the note data in the music data can be adjusted according to the part of the note data. Since music data can be set to an appropriate volume according to the part, automatic performance can be performed with a more natural volume balance.
[0079]
Further, according to the present embodiment, the average note length of the note data that is pronounced simultaneously or almost simultaneously with the target note data is calculated and compared with the note length of the target note data, so that the note data having a relatively short length is obtained. Can be extracted. In addition, it is possible to perform an automatic performance with a natural volume balance by emphasizing the volume using note data having a relatively short length as a melody line.
[0080]
Further, according to this embodiment, each track of music data having a plurality of tracks can be designated as an appropriate part. In addition, since an appropriate volume can be set for each part, automatic performance can be performed with a more natural volume balance.
[0081]
In the present embodiment, only the volume of the note data that meets a specific condition is emphasized. However, if only the enhancement is performed, the volume of the harmony increases in addition to the result of balancing the harmony. There is a fear. Therefore, for note data that does not match a specific condition, the volume of the entire harmony can be kept constant before and after editing by reducing the volume. In addition, if this is done, there will be no difference in volume between the harmony part and the other parts.
[0082]
The format of the music data (performance information) is “event + relative time” that shows the time of occurrence of the performance event as the time from the previous event, and the time of occurrence of the performance event is the absolute time in the song or measure. "Event + absolute time" expressed, "pitch (rest) + note length" representing music information by note pitch and note length or rest and rest length, memory area for each minimum performance resolution Can be used in any format such as a “solid method” in which a performance event is stored in a memory area corresponding to the time at which the performance event occurs.
[0083]
Further, as a method of storing music data for a plurality of channels, a format in which data of a plurality of channels is mixed and stored, or a format in which data of each channel is stored separately for each track may be used.
[0084]
Further, in the memory, time-series music information may be stored in a continuous address area, or data stored in a scattered address area is separately managed as continuous data. May be. That is, it only needs to be managed as time-sequential data, and it does not matter whether the data is continuously stored in the memory.
[0085]
The performance information processing apparatus 1 according to the present embodiment is not limited to an electronic musical instrument, a form of a personal computer + application software, a form of a portable communication terminal such as a mobile phone, or any form such as a karaoke apparatus, a game apparatus, or an automatic performance piano. You may take
[0086]
When the performance information processing apparatus 1 is an electronic musical instrument, the form is not limited to a keyboard musical instrument, and may be any form such as a wind instrument type, a stringed instrument type, and a percussion instrument type.
[0087]
In addition, the sound source device, the automatic performance device, etc. are not limited to those built in one electronic musical instrument body, but each is a separate device, and each device is connected using a communication process such as MIDI or various networks. There may be.
[0088]
In addition, you may make it implement a present Example by the commercially available computer etc. which installed the computer program etc. corresponding to a present Example.
[0089]
In that case, the computer program or the like corresponding to the present embodiment may be provided to the user while being stored in a storage medium that can be read by the computer, such as a CD-ROM or a floppy disk.
[0090]
When the computer or the like is connected to a communication network such as a LAN, the Internet, or a telephone line, a computer program or various data may be provided to the computer or the like via the communication network.
[0091]
Although the present invention has been described with reference to the embodiments, the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications, improvements, combinations, and the like can be made.
[0092]
【The invention's effect】
As described above, according to the present invention, performance expressions can be automatically and easily added to music data.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a hardware configuration of a computer or an electronic musical instrument constituting a performance information processing apparatus 1 according to an embodiment of the present invention.
FIG. 2 is a flowchart showing main processing performed by the performance information processing apparatus 1;
FIG. 3 is a flowchart showing music data processing performed in step SA5 of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Performance information processing apparatus, 2 ... Bus, 3 ... ROM, 4 ... RAM, 5 ... CPU, 6 ... Timer, 7 ... External storage device, 8 ... Detection circuit, 9 ... Setting operator, 10 ... Performance operator, DESCRIPTION OF SYMBOLS 11 ... Display circuit, 12 ... Display, 13 ... Sound source circuit, 14 ... DSP, 15 ... Sound system, 16 ... MIDI I / F, 17 ... Electronic equipment, 18 ... Communication I / F, 19 ... Communication network

Claims (5)

Extracting means for extracting from the music data a plurality of note data for which the start of sound generation is specified simultaneously or substantially simultaneously and the single note data for which there is no other note data for which start of sound generation is specified simultaneously or substantially simultaneously ,
A first classification means for comparing pitches of the plurality of extracted note data and classifying each of the plurality of note data into one of a highest voice part, a lowest voice part, and another voice part;
The extracted single note data is compared with the plurality of note data classified by the first classification means, and the extracted single note data is selected from the highest voice part, the lowest voice part, and other voice parts. A second classification means for classifying
A performance information processing apparatus comprising: control means for controlling the sound volume of the plurality of note data and single note data in accordance with the classification by the first and second classification means.   2. The performance information processing apparatus according to claim 1, wherein the control means increases the sound volume of the plurality of note data and single note data classified as the highest voice part.   The performance information processing apparatus according to claim 1 or 2, wherein the control means increases the sound volume of the plurality of note data and single note data classified as the lowest voice part. An extraction step of extracting from the music data a plurality of note data for which the start of sound generation is specified simultaneously or substantially simultaneously, and single note data for which there is no other note data for which start of sound generation is specified simultaneously or substantially simultaneously; ,
A first classification step of comparing the pitches of the plurality of extracted note data and classifying each of the plurality of note data into one of the highest voice part, the lowest voice part, and other voice parts;
The extracted single note data is compared with the plurality of note data classified in the first classification step, and the extracted single note data is selected from the highest voice part, the lowest voice part, and other voice parts. A second classification step for classifying
A performance information processing method comprising: a control step of controlling a sound volume of the plurality of note data and single note data in accordance with the classification by the first and second classification steps. An extraction procedure for extracting from the music data a plurality of note data for which the start of sound generation is specified at the same time or at the same time and a single note data for which there is no other note data for which the start of sound generation is specified at the same time or at the same time; ,
A first classification procedure for comparing pitches of the plurality of extracted note data and classifying each of the plurality of note data into one of a highest voice part, a lowest voice part, and another voice part;
The extracted single note data is compared with the plurality of note data classified by the first classification procedure, and the extracted single note data is selected from the highest voice part, the lowest voice part, and other voice parts. A second classification procedure for classifying
A program for causing a computer to execute a performance information processing procedure including a control procedure for controlling the sound volume of the plurality of note data and single note data according to the classification by the first and second classification procedures.

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