JP5708730B2 - Musical performance device and musical performance processing program - Google Patents

Description

  The present invention relates to a musical tone performance apparatus for scoring a user's musical instrument performance, and a musical tone performance processing program used therefor.

  A technique for inputting a performance signal when a user plays a musical instrument and scoring the performance is already known (for example, see Patent Document 1). In this prior art, target pitch data (song data) for music prepared in advance is compared with actual pitch data (performance data) corresponding to the performance signal output from the musical instrument by the user's performance. Scoring is performed based on the comparison result.

JP 2012-83540 A

  By the way, in general, in stringed instruments (especially guitars), each string is pronounced almost simultaneously (so-called stroke playing method), each string is played over time (so-called arpeggio playing method), and each string is muted or short. There are various performance methods such as pronunciation in time (so-called cutting performance). Also, the number of strings to be played and the string number (which string to play) vary depending on what the overall tone is and what part of the song it is. is there.

  In addition, when a relatively fast-tempo (for example, rock-like) music is played by a stringed instrument (especially an electric guitar), each chord is expressed by a so-called power chord in order to emphasize the drive feeling (smooth atmosphere) of the music. There is a case to play with sound. In the performance using the power chord, not all chords constituting the chord are sounded, but mainly the root sound and the sound having a pitch five times higher than the root sound are pronounced. Even if it is not a complete power chord performance, depending on the user's preference and proficiency level, there may be a case where not all of the above chords are sounded but a sound (including the power chord portion) in which some of the constituent sounds are omitted. .

  In the background as described above, the comparison between the target pitch data and the actual pitch data is performed uniformly using, for example, a standard and uniform fingering mode for generating all chords constituting the chord. For example, some of the sounds in the target pitch data are missing in the actual pitch data. As a result, the actual situation as described above cannot be reflected, and it is difficult to score accurately.

  An object of the present invention is to provide a musical tone performance apparatus and musical tone performance processing program that can improve the scoring accuracy of a stringed instrument played by a user.

  In order to achieve the above object, the first invention includes music data storage means for storing karaoke music data including chord information consisting of a plurality of chord progressions, including a performance part of a predetermined stringed instrument, Music data reproduction means for reading out and reproducing the karaoke music data stored in the music data storage means, and each code included in the code information corresponding to the reproduction of the karaoke music data by the music data reproduction means Each of the stringed instruments of the instrument player according to the first target data generating means for generating the first target pitch data corresponding to the chord in the stringed instrument and the reproduction of the karaoke song data by the song data reproducing means. From the performance signal input means for inputting a performance signal output from the stringed instrument by performance, and the performance signal input means The actual data generation means for generating actual pitch data based on the played performance signal and the degree of coincidence between the first target pitch data and the corresponding actual pitch data are set as the root sound of each chord and the root sound. And the instrument player according to the degree of coincidence determined by the power code coincidence degree determining means and power code coincidence degree determining means determined by power code data consisting of a sound having a pitch 5 degrees above And first scoring means for scoring the performance.

  In the musical tone performance device according to the first aspect of the present application, a user (musical instrument player) can play a musical instrument along with the reproduction of karaoke music data. That is, the karaoke music data stored in the music data storage means is read and reproduced by the music data reproducing means.

  At this time, in the first invention of the present application, when the user plays the stringed instrument in accordance with the reproduction, the performance is scored. That is, code information is associated with the reproduced karaoke music data. And according to reproduction | regeneration of the said karaoke music data, the 1st target data production | generation means produces | generates the 1st target pitch data of the said stringed instrument for every chord contained in the said chord information. On the other hand, after the performance signal output from the stringed instrument by the user's performance is input by the performance signal input means, the actual data generation means (for example, the frequency component of the performance signal is extracted and chroma vector processing is performed). ) Corresponding actual pitch data is generated. Then, the scoring is performed by the first scoring unit based on the degree of coincidence between the generated actual pitch data and the corresponding target pitch data.

  In the first invention of the present application, in consideration of the performance tendency of the actual user as described above, the power code coincidence determination means determines the coincidence between the first target pitch data and the corresponding actual pitch data as the route. It is determined by the power code data consisting of the sound and the sound 5 degrees above. As a result, since the scoring accuracy in the performance of the stringed instrument can be improved, the convenience and entertainment for the user can be enhanced.

  ADVANTAGE OF THE INVENTION According to this invention, the scoring precision with respect to the performance of the stringed instrument by a user can be improved.

It is explanatory drawing which shows the main structures of the karaoke apparatus of one Embodiment of this invention. It is a functional block diagram which shows the main structures of the control system of the control apparatus with which the karaoke apparatus was equipped. It is explanatory drawing which shows an example of the data structure of the reception data from the server containing music data. It is explanatory drawing which shows an example of the display content displayed on a monitor at the time of reproduction | regeneration of music data. It is a functional block diagram showing the detailed function of CPU. It is explanatory drawing for demonstrating the method of producing | generating the target pitch data using a power code, and comparing with real pitch data. It is explanatory drawing for demonstrating the example of a display of a scoring result. It is a flowchart which shows the processing content performed by CPU at the time of the music reproduction of a karaoke apparatus. It is a flowchart showing the detailed procedure of step S100. It is explanatory drawing for demonstrating the method of the modification which produces | generates the target pitch data which designated the string number and the string number, and compares with actual pitch data. It is a flowchart showing the detailed procedure of step S100 among the processing content performed by CPU at the time of the music reproduction of a karaoke apparatus.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a case will be described in which a user mainly plays an electric guitar by himself along with the performance of karaoke music.

<Main configuration>
FIG. 1 is an explanatory diagram showing a main configuration of a karaoke apparatus which is a musical tone performance apparatus of the present embodiment. As shown in FIG. 1, the karaoke apparatus 10 has a monitor television (hereinafter, abbreviated as a monitor) that displays a lyrics telop indicating lyrics, a background video displayed on the background of the lyrics telop, a video showing a music selection number, etc. on the CRT. 13, a user monitor 14, a musical instrument connection board 8 for connecting an electronic musical instrument such as an electric guitar 4 (corresponding to a predetermined stringed musical instrument) or an electric bass, and a plurality of musical instrument performance parts By selecting a song (karaoke song; hereinafter abbreviated as “song” as appropriate) and selecting a song to be reserved for playback, sending a request signal indicating a request to send the selected song to the server, and by request signal Communication control such as reception of music data (corresponding to karaoke music data) corresponding to the displayed music, and musical tone type designation information included in the received music data And a control unit 20 that performs for designating the same type of instrument sound source and an instrument connected to the instrument connection board 8 of the IDI data, are provided.

  Further, in this example, the karaoke apparatus 10 mixes a musical instrument performance signal inputted from the musical instrument connection board 8, a voice signal inputted from the microphones 17 and 18, and a music reproduction signal (shown in FIG. 2 described later). Mixing circuit 9), volume balance adjustment between sound and music, echo adjustment, delay adjustment, amplification of mixing signal, pitch control (key control) of played music, high / low sound control ( An amplifier 16 that performs tone control), a set of floor type speakers 11 and 11 that reproduce the amplified signal output from the amplifier 16 as sound, a set of speakers 12 and 12 for hanging the ceiling, And a remote controller 30 for remotely operating the control device 20. The remote controller 30 is provided with various operation buttons 30a and 30b.

  Although not shown, the musical instrument connection board 8 is connected to the output terminals (phone plugs) of the electronic drum, keyboard, electric bass, and electric guitar 4 (phone jacks; corresponding to performance signal input means); And output terminals for outputting performance signals inputted to the respective input terminals. The musical instrument connection board 8 automatically detects that each musical instrument is connected and the type of the musical instrument by connecting the output terminal of each musical instrument to the input terminal, and selects one performance signal of the connected musical instrument. The selected performance signal is output to an input terminal 44 (see FIG. 2 described later) of the control device 20. For example, a performance signal output from the electric guitar 4 is input to the musical instrument connection board 8 via a phone jack 4 a (see FIG. 2 described later) for connecting a phone plug of the electric guitar 4, and is output from the output terminal of the musical instrument connection board 8. The output performance signal is input to the input terminal 44 of the control device 20. Note that instead of automatically detecting the connection and the type of the musical instrument as described above, the user may manually perform settings corresponding to the musical instrument already connected on the remote controller 30 or the like. In this case, acoustic guitar sounds such as gut guitars and folk guitars may be collected by a microphone and input to the phone jack 4a instead of an electronic stringed instrument such as the electric guitar 4.

<Control system>
The configuration of the control system of the control device 20 will be described with reference to FIG. FIG. 2 is a functional block diagram showing the main configuration of the control system of the control device 20. The control device 20 includes a communication terminal 40 that connects the LAN line 15 to the device housing, an input terminal 44 that is connected to the output terminal of the musical instrument connection board 8, and an audio output terminal 41 that is connected to the audio input terminal of the amplifier 16. The video output terminal 42 connected to the video input terminal of the monitor 13 and the video output terminal 43 connected to the video input terminal of the monitor 14 are provided.

  Further, the control device 20 is provided with a CPU 45 (corresponding to a calculation means) that executes various controls according to a control program. The CPU 45 includes a RAM 46 for temporarily storing data transmitted from the remote controller 30, music selection number data indicating the music selection number of the selected music, music selection number data of the reserved music, and a program executed by the CPU 45 ( A musical tone performance processing program for executing the flows shown in FIGS. 8, 9, and 11 (to be described later) and a ROM 47 in which necessary data tables are stored are connected.

  Further, the CPU 45 has a video RAM 48 in which character video data for displaying lyrics telop and various message videos on the monitors 13 and 14 and music data and chord score information transmitted from the server 58 (details will be described later). The LAN board 50 for receiving the lyrics data and the video data via the communication terminal 40, and the RAM 49 for temporarily storing the music data and the lyrics data received by the LAN board 50 (in the music data storage means) Equivalent).

  Further, the CPU 45 is connected to a MIDI sound source board 51 that inputs MIDI data included in the song data read from the RAM 49 and outputs a sound source signal from a sound source specified by the input MIDI data. . Further, the CPU 45 inputs the output sound source signal and converts it into a signal that can be amplified by the amplifier 16, and a CD-ROM player 53 that reads background video data indicating a general background video. Is connected.

  The CPU 45 also receives general background video data read from the CD-ROM player 53, song-specific background data read from the RAM 49, lyrics telop data included in the song data, and the like. 13 is connected to a video control circuit 54 that performs video control for creating a video in which the lyrics telop is superimposed on the background video displayed on the display screen 13 and changing the color of the lyrics telop as the music progresses. ing.

  Further, the CPU 45 includes a conversion circuit 55 that converts an optical signal received from the light receiving unit 38 of the control device 20 into a digital signal, and various buttons and keys (tenkey, A display circuit 56 that outputs a display signal to an LED that lights when a music selection button or the like is pressed, and an input circuit 57 that inputs a switching signal generated when the various buttons and keys are pressed are connected.

<Basic operation of karaoke equipment>
In the karaoke apparatus 10 having the basic configuration described above, when the user selects a karaoke piece including, for example, a performance part of the electric guitar 4 by the remote controller 30, and receives the piece of music data transmitted from the server 58 in response to the selection, the piece of music data is obtained. Played. When a user (corresponding to a musical instrument player) plays the electric guitar 4 in accordance with the performance of the music data including the performance part of the electric guitar 4, the performance signal output from the electric guitar 4 is transmitted via the musical instrument connection board 8. Input to the input terminal 44 of the control device 20. Then, in the sound control circuit 52, the sound source signal is output to the sound output terminal 41. In the case of the so-called minus one playback state, the audio control circuit 52 outputs to the audio output terminal 41 in the minus one playback state in which a part of the music part of the electric guitar of the sound source signal is replaced with the performance signal of the electric guitar 4. Is done.

  At this time, in this embodiment, chord score information (details will be described later) is associated in advance with performance support for music data including the guitar performance part of the electric guitar 4 received together with the lyrics data and video data from the server 58. When the music data is reproduced, the chord score information is displayed together with the lyrics data and the video data by the monitors 13 and 14. Thereby, the user who is a performer can easily perform the performance part of the electric guitar 4 by himself using the chord score information displayed on the monitors 13 and 14 according to the karaoke music to be reproduced. You can practice the electric guitar 4 and enjoy an ensemble of the entire karaoke song.

<Data structure>
FIG. 3 is an explanatory diagram showing a data structure of received data including music data received from the server 58 in the present embodiment. In the example shown in FIG. 3, four bars of karaoke music pieces of data received from the server are shown. The received data includes music data of a plurality of musical instrument performance parts (in this example, a guitar part, a bass part, and a drum part corresponding to the electric guitar 4) corresponding to the progress of the performance for four bars, the chord score information, Lyric data (lyric telop data) and video data are provided.

  The music data is reproduced from the first bar (hereinafter simply referred to as “first bar” or the like) in the data shown in FIG. 3 together with the lyrics data and the video data, and the second bar, the third bar, Playback proceeds to the fourth measure. Corresponding to the reproduction, display based on the lyrics data and the video data also proceeds.

<Cord score information>
The chord score information is associated with music data. In this example, the first bar in the figure is chord C, chord G, chord Am, chord F. The second measure, the third measure, and the fourth measure have the same chord progression (may be chord progressions different from each other).
When there are a plurality of types of music data, each music data corresponds to a music title (for example, music ID used for music selection described above), MIDI data for music performance, lyrics data, and chord data for performance support. Any data structure may be used. Since the music data structure is well known, only the necessary parts are shown in FIG.

In this example, the chord score information is composed of the same file as the music data. However, the present invention is not limited to this, and the chord score information is composed of the music data and a separate file (hereinafter, chord score information file). It may be associated with a song name.
For example, by the following configuration and processes (1) to (4), even if the chord score information is a separate file (code score information file) from the song data, the same as when the chord score information is the same file as the song data The effect is obtained.
(1) A chord score information file is a file of a table in which chord information that appears in accordance with the progress of music data reproduction is associated with the progress time of the music in advance.
Specifically, the table records information of (performance time t1: chord Em, t2: chord Bm,... Last performance time tX: last chord score X).
(2) The code information file is stored in the RAM 49 together with the music data.
(3) When the reproduction of the music is designated from the input circuit 57, the CPU 45 reads out the corresponding music score information file from the RAM 49 together with the music data.
(4) The CPU 45 reproduces the music data according to the execution program in the ROM 47, and reads out the chord information from the chord information file according to the reproduction progress time.
Specifically, when the music data reproduction progress time reaches t1 (seconds), the code Em corresponding to t1 is read from the code information file, and the code corresponding to t2 is reached when t2 (seconds) is reached. Read Bm. Similarly, the chord score corresponding to the progress time is continuously read from the chord score information file until the music data reproduction ends (tX).

  FIG. 4 is an explanatory diagram showing an example of display contents displayed on the monitors 13 and 14 in correspondence with the chord score information when music data is reproduced. In this example, a display example corresponding to the music data for four bars shown in FIG. 3 is shown. In other words, the contents displayed on the monitors 13 and 14 are the above four bars of lyrics “Let's love with your words instead of the body and tears” and the chord score attached to the upper side of the lyrics (first bar: C , G, Am, F, 2nd bar: C, G, Am, F, 3rd bar: C, G, Am, F, 4th bar: C, G, Am, F) It consists of a playback progress bar with two bars at a time. The reproduction progress bar is indicated by a black portion extending in a strip shape to indicate the progress of reproduction of the music data. The user of the electric guitar 4 looks at the chord score displayed on the monitors 13 and 14 when reproducing the music data, and presses the chords of the electric guitar 4 in the order of the chord progression corresponding to the extension state of the reproduction progression bar. You can easily play the electric guitar part of karaoke music.

  FIG. 4 (a) shows that the reproduction of the music data starting from the beginning of the first bar (code C) proceeds to the middle of the first bar (immediately before the “na” portion of the lyrics “body”). The black portion of the first reproduction progress bar extends partway through the first bar. In FIG. 4 (b), playback further proceeds from the state of FIG. 4 (a), the first measure ends, and the middle part of the second measure (the “de” portion of the lyrics “not tears”). Is being reproduced, and the black portion extends partway through the second bar. In FIG. 4C, the reproduction further proceeds from the state of FIG. 4B, and the part of the chord F at the end of the second measure (the part after “ku” of the lyrics “not tears”) is reproduced. The black portion extends to the end of the second bar.

<Features of this embodiment>
By the way, the method of scoring a user's song in a karaoke apparatus has already been widely performed. Here, when the user plays a stringed instrument (in this example, the electric guitar 4) using the chord score information as described above, if the player scores the performance and displays the score result, the enjoyment for the user is achieved. Can be further increased.

  Therefore, in the present embodiment, the chroma vector process is performed after the frequency component of the performance signal output by the user playing the electric guitar 4 is extracted by a known FFT (Fast Fourier Transform) technique. For each predetermined time segment, actual pitch data (details will be described later) corresponding to the performance is generated. The scoring is performed based on the degree of coincidence between the actual pitch data and the target pitch data (details will be described later) generated based on the chord information. The details will be described below with reference to FIGS.

<Detailed functions of CPU>
FIG. 5 shows a functional configuration of the CPU 45 of the present embodiment in order to perform the above scoring. As illustrated, the CPU 45 includes functional units such as an FFT processing unit 45a, a characteristic parameter acquisition unit 45b, an actual data buffer 45c, a target data buffer 45e, a matching processing unit 45d, and a scoring result generation unit 45f. .

  The performance signal output by the user's performance of the electric guitar 4 and input to the control device 20 as described above is converted into digital data, and then input to the FFT processing unit 45a and the characteristic parameter acquisition unit 45b. The FFT processing unit 45a divides the performance audio data, which is the input sampling data sequence, into predetermined time segments (for example, 186 msec) and performs fast Fourier transform. The frequency spectrum obtained by the FFT is input from the FFT processing unit 45a to the feature parameter acquisition unit 45b.

  The characteristic parameter acquisition unit 45b receives the performance sound data and also receives a frequency spectrum that is frequency domain information from the FFT processing unit 45a. The characteristic parameter acquisition unit 45b acquires a plurality of characteristic parameters indicating various characteristics of the performance sound data from the performance sound data and its frequency spectrum, and the actual pitch corresponding to the acquired result by a known chroma vectorization technique. Data (data representing each chord sound included in the performance signal) is generated and output. This feature parameter is acquired in the frame for each time segment. Specifically, the feature parameter acquisition unit 45b includes a time domain information acquisition unit 45ba that calculates a time domain feature parameter from the input performance audio data and a frequency domain feature from the frequency spectrum input from the FFT processing unit 45a. A frequency domain information acquisition unit 45bb for determining parameters is provided.

The time domain information acquisition unit 45ba divides the input performance sound data into frames for each of the time segments synchronized with the FFT processing unit 45a, and acquires time domain feature parameters for each frame. Examples of characteristic parameters acquired by the time domain information acquisition unit 45ba include energy, energy change, duration, and the like. The frequency domain information acquisition unit 45bb acquires frequency domain feature parameters from the frequency spectrum of the waveform having the length of the time segment input from the FFT processing unit 45a. Examples of characteristic parameters acquired by the frequency domain information acquisition unit 45bb include, for example, pitch, harmonic frequency, harmonic level, harmonic phase, and the like.

  The actual pitch data generated and output based on the characteristic parameters acquired by the time domain information acquisition unit 45ba and the frequency domain information acquisition unit 45bb as described above are input to the actual data buffer 45c. The actual data buffer 45c stores the input actual pitch data with time information (time stamp).

  On the other hand, the chord score information synchronized with the karaoke piece data is input to the target data buffer 45e, and target pitch data (corresponding to the first target pitch data) based on the chord score information is stored. This target pitch data is data corresponding to a plurality of sounds constituting chords of each chord included in the chord score information (however, in this embodiment, five times for the root sound of each chord and the root sound) Power chord data consisting of the sound of the upper pitch (details will be described later), when the chord score information is input to the target data buffer 45e, the chord score information is generated based on the chord score information, and the target data buffer 45e.

  The matching processor 45d compares the actual pitch data stored in the actual data buffer 45c as described above with the corresponding target pitch data stored in the target data buffer 45e by a known method. The degree of coincidence is calculated numerically, for example, by calculation. The calculated degree of coincidence is output to the scoring result generation unit 45f. In addition, instead of calculating the degree of coincidence by calculation, a table is prepared in advance, which is divided into a plurality of categories and the value of the degree of coincidence is associated with each category, and the comparison result is assigned to which category of the table. The degree of coincidence may be determined depending on whether it belongs.

  The scoring result generation unit 45f evaluates the performance by the user (in this example, the performance of the electric guitar 4) based on the degree of coincidence input from the matching processing unit 18, and gives a higher evaluation to the performance as the degree of coincidence increases. The scoring result generation unit 45f scores this evaluation as a score, for example, with 100 points being a perfect score, and inputs the scoring result to the monitors 13 and 14. The monitors 13 and 14 display the input scoring results.

<Problems specific to stringed instruments>
By the way, when a relatively fast tempo (for example, rock tone) music is played by a stringed instrument (especially the electric guitar 4), each chord is played by a so-called power chord in order to emphasize the drive feeling of the music. There is a case. In the performance using the power chord, not all chords constituting the chord are sounded, but mainly the root sound and the sound having a pitch five times higher than the root sound are pronounced. Even if it is not a complete power chord performance, depending on the user's preference and proficiency level, there may be a case where not all of the above chords are sounded but a sound (including the power chord portion) in which some of the constituent sounds are omitted. . In such a case, the above calculation or the above determination of the degree of coincidence between the target pitch data and the actual pitch data (hereinafter, these are collectively referred to simply as “determination”), and all chords constituting the chord are If it is used, a part of the sound in the target pitch data is missing in the actual pitch data, making it difficult to score accurately.

<Generation of target pitch data by power code>
Therefore, in the present embodiment, the target pitch data is generated using the power code, and the generated target pitch data and the actual pitch data (the user performed using the power code) are: To be compared. This method will be described with reference to FIG.

  6, in this example, in the music data shown in FIG. 3 and FIG. 4, the first bar of code C → code G → code Am → code F, code C → code G → code Am → code Music is played back in the order of the second bar of F, chord C-> chord G-> chord Am-> chord F of chord F, chord C-> chord G-> chord Am-> chord F of chord F, ... In this state, the user plays the electric guitar 4 in accordance with the reproduction.

  As described above, the target pitch data corresponding to the chord progression as described above is power chord data including the root sound of each chord and a sound that is 5 degrees above the root sound. ing. In other words, in the first measure, for chord C, a pitch that is pronounced in a fingering manner that presses two locations of a 4-string 5-fret and a 5-string 3-fret is designated (ie, FIG. 6). For convenience, the TAB score is used for convenience, but the actual target pitch data is set as specific pitch data expressed by this TAB score (the same applies hereinafter). Similarly, for chord G, the 5th fret of the 5th string and the 3rd fret of the 6th string are designated, and for the chord Am, the 7th fret of the 5th string and the 5th fret of the 6th string are designated. On the other hand, 3rd fret of 5 strings and 1st fret of 6 strings are designated. In this example, as described above, the second bar to the fourth bar have the same chord progression as the first bar, so the same fingering mode is designated.

  Then, in the first bar to the fourth bar, as a result of performing frequency component extraction and chroma vector processing by FFT processing as described above on the basis of the performance signal by the user playing the electric guitar 4, the corresponding real sound is obtained. High data is being generated.

  In this example, when the user plays the electric guitar 4, in the first measure, for the chord C, the sound that is generated in a fingering manner that presses two places of the 6th fret of the 4th string and the 3rd fret of the 5th string High data is generated from the input performance signal (that is, the actual actual pitch data is generated as specific pitch data in the same manner as the target pitch data. In FIG. This is only expressed in TAB notation. After that, for chord G, 5th fret of 5 strings and 3rd fret of 6th string are pressed, for chord Am, 7th fret of 5th string and 5th fret of 6th string are pressed, and for chord F The 5th string 3rd fret and the 6th string 1st fret are held down.

  As a result of the above, in the first measure, the target pitch data is compared with the actual pitch data, so that in the first chord C, the actual pitch data is specified with respect to the designation of the 4-string 5-fret in the target pitch data. Then, it can be seen that the 6th fret of the 4th string is pressed, and this is the only discrepancy data. In this example, the scoring result is “80 points” by scoring according to the degree of coincidence.

  Similarly, in the second measure, by playing the electric guitar 4 by the user, for the chord C, the four-string five-fret and the five-string three-fret are pressed, and for the chord G, the five-string fret. 5th fret and 6th string 3rd fret are pressed, 5th string 7th fret and 6th string 5th fret are pressed against chord Am, 5th string 3rd fret and 6th string are pressed against chord F One fret is held down. As a result, in the second measure, the target pitch data and the actual pitch data are compared, and it can be seen that there is no mismatch data as described above. By scoring corresponding to such a degree of coincidence (= 100%), in this example, the scoring result is “100 points”.

  In the third measure, the user plays the electric guitar 4 and the chord C is pressed with the 5th fret of the 4th string and the 3rd fret of the 5th string. The fret and the 6th string 3rd fret are pressed. For the chord Am, the 5th string 6th fret and the 6th string 4th fret are pressed. For the chord F, the 5th string 2nd fret and the 6th string 1st. The fret is held down. As a result, in the third measure, the target pitch data is compared with the actual pitch data, so that in the third chord Am, the actual pitch data corresponds to the specification of the 7th fret of the fifth string in the target pitch data. Shows that the 6th fret of the 5th string is pressed, and the 4th fret of the 6th string is pressed in the actual pitch data as opposed to the designation of the 5th fret of the 6th string in the target pitch data, which is inconsistent data. In addition, in the fourth chord F, it can be seen that the 2nd fret of the 5th string is pressed in the actual pitch data while the 5th string of the 3rd fret is specified in the target pitch data. In this example, a scoring result of “60 points” is obtained by scoring corresponding to the degree of coincidence.

  Further, in the fourth measure, the user plays the electric guitar 4 and the chord C is pressed with the 5th fret of the 4th string and the 3rd fret of the 5th string. Fret and 6th string 3rd fret are pressed, 5th string 7th fret and 6th string 5th fret are pressed against chord Am, 5th string 3rd fret and 6th string 1st for chord F The fret is held down. As a result, in the fourth measure, the target pitch data and the actual pitch data are compared, and it can be seen that there is no mismatch data as described above. By scoring according to such a degree of coincidence (= 100%), a scoring result of “100 points” is obtained as in the second measure.

  7A to 7C show display examples displayed on the monitors 13 and 14 according to the scoring result by the scoring result generation unit 45f as described above. FIG. 7A shows an example when the scoring result is 100 points, FIG. 7A shows an example when the scoring result is 100 points, and FIG. 7B shows a scoring result of 60 points. FIG. 7C shows an example in the case where the scoring result is 0 points. In addition to this, in addition to displaying the result of scoring the guitar performance by the user for each time segment in which music data playback is in progress, various display modes such as lyrics and chord scores are also displayed. Are prepared in advance (not shown).

<Control procedure>
In order to realize the method of the present embodiment as described above, processing contents executed by the CPU 45 when the karaoke apparatus 10 plays back music will be described with reference to a flowchart of FIG.

  In FIG. 8, this flow is started when, for example, the user of the karaoke apparatus 10 presses the power button of the control apparatus 20 to turn on the control apparatus 20. In conjunction with the rising of the power supply of the control device 20, the power supply of the amplifier 16, the musical instrument connection board 8 and the monitors 13, 14 is started up. As described above, in this example, the case where the user of the karaoke apparatus 10 performs by connecting the electric guitar 4 to the musical instrument connection board 8 will be described. When the user connects the phone plug of the electric guitar 4 to the input terminal (phone jack) 4a of the musical instrument connection board 8, the musical instrument connection board 8 detects that the electric guitar 4 is connected.

  In FIG. 8, first, in step S10, the CPU 45 determines whether or not the music selection by the user has been completed. In the music selection, for example, when the user inputs the music selection number of the music that he / she wants to play the electric guitar 4 with the numeric keypad of the remote controller 30 and presses the music selection button, the music selection ends. Until the music selection is completed, the determination in step S10 is not satisfied (step S10: NO), and a loop standby is performed. When the music selection is completed, the determination in step S10 is satisfied (step S10: YES), and the process proceeds to step S15.

  In step S15, the CPU 45 temporarily stores the music selection number data indicating the music selection number in the RAM 46 corresponding to the music selection result in step S10, and transmits the music data corresponding to the music selection number via the LAN board 50. A request signal to be requested is transmitted to the server 58 via the LAN line 15. Thereby, the server 58 searches and reads out the music data corresponding to the music selection number indicated in the request signal and the chord score information and the lyrics data and video data corresponding to the music data from a storage device (not shown), The read music data and the like are transmitted to the control device 20 via the LAN line 15. When step S15 ends, the process proceeds to step S20.

  In step S <b> 20, the CPU 45 receives music data (including chord information) transmitted from the server 58 via the LAN line 15 via the LAN board 50. Thereafter, the process proceeds to step S25.

In step S25, the CPU 45 temporarily stores the music data received in step S20 in the RAM 49. Thereafter, the process proceeds to step S30.
In addition, as a process of step S15, step S20, and step S25, the music data matched with the music selection number, the chord score information, etc. are processed on demand from the server 58 for every music selection. In addition, a large-capacity auxiliary storage means (not shown) is provided in the control device 20 of the karaoke apparatus 10, and music data and the like are stored in advance in the auxiliary storage means, and each song selection is associated with a song selection number. The information group may be read from the auxiliary storage unit to obtain target information.

  In step S30, the CPU 45 starts reading the MIDI data stored in the RAM 49 in step S25 and writes the read MIDI data to the MIDI tone generator board 51. When step S30 ends, the process proceeds to step S35.

  In step S35, the CPU 45 outputs a control signal to the MIDI sound source board 51 and causes the MIDI sound source board 51 to output a sound source signal corresponding to the MIDI data written in step S30. The sound source signal output from the MIDI sound source board 51 is output to the sound control circuit 52 and converted into a music signal that can be amplified by the amplifier 16, and the converted music signal is transmitted from the sound output terminal 41 to the amplifier 16. Is output. Also, the audio signal input from the microphones 17 and 18 is mixed with the music signal in the mixing circuit 9 built in the amplifier 16. At this time, the performance signal output from the output terminal of the electric guitar 4 is input to the mixing circuit 9 via the musical instrument connection board 8 and the control device 20, and is mixed with the audio signal and the music signal. The mixed signal thus mixed is amplified by an amplifier circuit (not shown) built in the amplifier 16 and then output to the speaker 11 and the speaker 12 and reproduced by both speakers. In addition, the procedure of this step S35 functions as music data reproducing means described in each claim. When step S35 ends, the process proceeds to step S40.

  In step S40, the CPU 45 outputs a control signal to the monitors 13 and 14, and displays the chord score information and the lyrics stored in step S25 on the monitors 13 and 14 (note that the scoring result in step S100 described later also applies to this). Sometimes displayed together). Thereby, the user who is a player of the electric guitar 4 plays the electric guitar 4 according to the chord score displayed on the monitors 13 and 14, thereby easily playing the electric guitar performance part in accordance with the karaoke music to be reproduced. Can play. Thereafter, the process proceeds to step S50.

  In step S50, the CPU 45 stores the performance signal input from the input terminal 44 by the performance of the user's electric guitar 4 as performance data, for example, in the RAM 49. Thereafter, the process proceeds to step S55.

  In step S55, the CPU 45 determines whether or not one time segment corresponding to the FFT (Fast Fourier Transform) processing unit has been completed. If the time segment has not ended, the determination is not satisfied (S55: NO), and the process returns to step S30 and the same procedure is repeated. When the time segment ends, the determination is satisfied (S55: YES), and the routine goes to Step S100.

  In step S100, the CPU 45 performs scoring processing using the method described above. Details of the scoring process are shown in FIG.

  In FIG. 9, first, in step S110, the CPU 45 reads out the performance data accumulated in step S50 (corresponding to the one category), and the FFT processing unit 45a uses a known FFT (fast Fourier transform) technique. Each frequency component is extracted and analyzed. Thereafter, the process proceeds to step S120.

  In step S120, the CPU 45 generates the above-described actual pitch data by converting the analysis result in step S110 into a chroma vector by a known method by the feature parameter acquisition unit 45b. The procedure of step S120 corresponds to the actual data generation procedure described in each claim, and the CPU 45 that executes step S120 functions as actual data generation means. Thereafter, the process proceeds to step S130.

  In step S130, the CPU 45 performs the target sound using the power code as described above for each chord based on the chord score information acquired in step S20 and displayed in step S40 by the matching processing unit 45d. High data is generated and stored in the target data buffer 45e. The procedure of step S130 corresponds to the first target data generation procedure described in each claim, and the CPU 45 that executes step S130 functions as the first target data generation means. Thereafter, the process proceeds to step S140.

  In step S140, the CPU 45 compares the target pitch data generated in step S130 with the corresponding actual pitch data generated in step S120 by the matching processing unit 45d, and calculates the degree of coincidence. Thereafter, the process proceeds to step S150. The procedure of step S140 corresponds to the power code coincidence determination procedure described in each claim, and the CPU 45 executing step S140 functions as a power code coincidence determination unit.

  In step S150, the CPU 45 performs scoring corresponding to the performance data by an appropriate method based on the degree of coincidence calculated in step S140, and outputs the scoring result to, for example, the RAM 49 for storage. When step S150 is completed, this routine is terminated. The procedure of step S150 corresponds to the first scoring procedure described in each claim, and the CPU 45 executing step S150 functions as a first scoring unit.

  Returning to FIG. 8, when step S150 is completed, the CPU 45 finishes reproducing the music data in step S65 (in other words, reading of the MIDI data in step S30 is completed up to the last MIDI data of the music data). Determine whether or not. If the reproduction of the music data is finished, the determination is satisfied (step S65: YES), and this flow is finished. Until the reproduction of the music data is completed, the determination is not satisfied (step S65: NO), the process returns to step S30, and the procedure of steps S30 to S65 is repeated.

<Effect of embodiment>
As described above, in the present embodiment, when the user plays the electric guitar 4 in accordance with the reproduction of the music, the chroma vector processing is performed after the frequency component of the performance signal is extracted by the FFT technique. Thus, actual pitch data corresponding to the performance is generated for each predetermined time segment. The performance is scored based on the degree of coincidence between the actual pitch data and the target pitch data generated based on the chord score information associated with the music data.

  In this case, in the present embodiment, in consideration of the tendency when the user actually plays the stringed instrument such as the electric guitar 4 as described above, the target pitch data is generated in a mode corresponding to the power code, and the target The degree of coincidence between the pitch data and the corresponding actual pitch data is calculated. As a result, it is possible to improve the scoring accuracy in the performance of stringed instruments such as the electric guitar 4, and it is possible to improve convenience and entertainment for the user.

  In the above, the target pitch data is prepared in the form of a power code, and when the user performs a performance with the power code, the actual pitch data of the power code is generated, and the target sound of the power code is generated. Although the example in which the high data and the actual pitch data of the power code are compared is shown, the present invention is not limited to this. In other words, the target pitch data (not the power chord mode) is normal fingering data using 5 or 6 strings (or less than the number of strings and more than the power chording mode) However, the power code portion may be extracted from the prepared data and compared with the actual pitch data of the power code. On the other hand, while the target pitch data is prepared in the form of a power code, the fingering form (or better than that) in which the user uses normal 5 or 6 strings (not the form of the power code) Performing with a small number of strings and a fingering mode using a larger number of strings than the power cord fingering mode), and extracting only the power code part from the actual pitch data based on the performance, You may compare with target data. Furthermore, the target pitch data is not the power chord mode (instead of the power chord mode), but the normal fingering mode data using 5 or 6 strings (or the power chord mode with a smaller number of strings). Fingering mode using a large number of strings), and the user's fingering mode using 5 or 6 strings (not power cord mode) (or more) Is performed with a small number of strings and a fingering mode using a larger number of strings than the power cord fingering mode), and only the power chord portion is extracted from the actual pitch data based on the performance, and the above is prepared. It may be compared with the power code portion of the target eta. In these cases, the same effects as in the above embodiment are obtained.

  Furthermore, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit and technical idea thereof. Hereinafter, such a modification will be described with reference to FIGS.

<Problems that occur outside the power cord>
That is, generally, in stringed instruments (especially guitars including the above-described electric guitar 4), each string is pronounced substantially simultaneously (so-called stroke playing method), or each string is pronounced in order over time (so-called arpeggio playing method). There are various playing methods such as each string being muted or pronounced in a short time (so-called cutting playing method). Also, the number of strings to be played and the string number (which string to play) vary depending on what the overall tone is and what part of the song it is. is there. In such a case, the determination of the degree of coincidence between the target pitch data and the actual pitch data is uniformly performed using, for example, a standard and uniform fingering mode for generating all chords constituting the chord. If done, the situation as described above cannot be reflected, and accurate scoring becomes difficult.

<Generation of target pitch data by specifying the number of strings and string number>
Therefore, in the present modification, the target pitch data is generated in a form in which the number of strings to be generated and the string number are designated (in other words, in a form in which a performance style is designated). Then, the generated target pitch data (corresponding to the second target pitch data) is compared with the actual pitch data (performed by the user performing the specified performance). This method will be described with reference to FIG. 10 corresponding to FIG.

  10, in this example, as described above, the first measure of code C → code G → code Am → code F, code C → code G → code Am → second measure of code F, code C → code G → The music is played in the progression of chords in the order of chord Am → chord F, chord C → chord G → chord Am → fourth measure of chord F,... Shows the state of playing.

  In this modification, the target pitch data corresponding to the chord progression as described above is composed of a root sound of each chord and a sound having a pitch 5 degrees higher than the root sound in the first measure. The data is two-tone playing (equivalent to a power code). That is, in the first bar, the chord C is designated with the 5th fret of the 4th string and the 3rd fret of the 5th string, and the chord G is designated with the 5th fret of the 5th string and the 3rd fret of the 6th string. The chord Am is designated as the 7th fret of the 5th string and the 5th fret of the 6th string, and the 3rd fret of the 5th string and the 1st fret of the 6th string are designated as the chord F.

  As described above, actual pitch data is generated based on a performance signal from a user's performance. That is, in the first bar, the chord C is pressed with the 6th fret of the 4th string and the 3rd fret of the 5th string, and the chord G is pressed with the 5th fret of the 5th string and the 3rd fret of the 6th string. For chord Am, the 7th fret of the 5th string and the 5th fret of the 6th string are pressed, and for the chord F, the 3rd fret of the 5th string and the 1st fret of the 6th string are pressed.

  As a result of the above, in the first measure, the target pitch data is compared with the actual pitch data, so that the first chord C does not have the above-mentioned mismatch data, resulting in a scoring result of “100 points”. Yes.

  Next, in the second measure, the target pitch data is stroke playing data based on a so-called high chord position using five or six strings in full. That is, for chord C, a 1st string 3rd fret, a 2nd string 5th fret, a 3rd string 5th fret, a 4th string 5th fret, and a 5th string 3rd fret are designated. For chord G, a 1st string 3rd fret, a 2nd string 3rd fret, a 3rd string 4th fret, a 4th string 5th fret, a 5th string 5th fret, and a 6th string 3rd fret are designated. For chord Am, 1st string 5th fret, 2nd string 5th fret, 3rd string 5th fret, 4th string 7th fret, 5th string 7th fret, and 6th string 5th fret are designated. For chord F, 1st fret of 1st string, 2nd fret of 3rd string, 2nd fret of 3rd string, 3rd fret of 4th string, 3rd fret of 5th string, and 1st fret of 6th string are designated.

  In contrast to the above, when the user plays the electric guitar 4, the chord C is played with the 1st string 3rd fret, 2nd string 5th fret, 3rd string 5th fret, 4th string 5th fret, and 5th string 3rd. The fret is pressed. For chord G, the 1st string 3rd fret, 2nd string 3rd fret, 3rd string 4th fret, 4th string 5th fret, 5th string 5th fret, and 6th string 3rd fret are pressed. For chord Am, the 1st string 5th fret, 2nd string 5th fret, 3rd string 5th fret, 4th string 7th fret, 5th string 7th fret, and 6th string 5th fret are pressed. For chord F, 1st string 2nd fret, 2nd string 2nd fret, 3rd string 3rd fret, 4th string 4th fret, 5th string 4th fret, and 6th string 2nd fret are pressed. As a result, in the second measure, the target pitch data is compared with the actual pitch data, so that in the fourth chord F, all the strings from the first string to the sixth string become inconsistent data. I understand that. In this example, a scoring result of “60 points” is obtained by scoring corresponding to the degree of coincidence.

  In the third measure, the data is one note of the root sound of each chord. That is, for chord C, a 5-string 3-fret is designated, for chord G, a 6-string 3-fret is designated, for chord Am, a 6-string 5-fret is designated, and for chord F, On the other hand, one fret of 6 strings is designated. On the other hand, by the user's performance of the electric guitar 4, the 5th string 3rd fret is pressed against the chord C, the 6th string 3rd fret is pressed against the chord G, and the chord Am The 5th fret of the 5th string is pressed, and the 1st fret of the 6th string is pressed against the chord F. As a result, in the third measure, the target pitch data is compared with the actual pitch data, so that in the third chord Am, the actual pitch data corresponds to the specification of the 6th string 5-fret in the target pitch data. Then, the 5th fret of the 5th string is pressed, and it turns out that it is inconsistent data. In this example, the scoring result is “70 points” by scoring corresponding to the degree of coincidence.

  Further, in the fourth measure, the target pitch data is stroke play data based on a so-called low chord position in which five or six strings are fully used. That is, for chord C, the 1st string 0th fret (for convenience, the open string is referred to in this way, the same applies hereinafter), the 2nd string 1st fret, the 3rd string 0th fret, the 4th string 2nd fret, And 5 string 3 frets. For chord G, a 1st string 3rd fret, a 2nd string 3rd fret, a 3rd string 0th fret, a 4th string 0th fret, a 5th string 2nd fret, and a 6th string 3rd fret are designated. For the chord Am, the 1st string 0th fret, the 2nd string 1st fret, the 3rd string 2nd fret, the 4th string 2nd fret, and the 5th string 0th fret are designated. For chord F, 1st fret of 1st string, 2nd fret of 3rd string, 2nd fret of 3rd string, 3rd fret of 4th string, 3rd fret of 5th string, and 1st fret of 6th string are designated.

  In contrast to the above, when the user plays the electric guitar 4, for chord C, the 1st string 0th fret, 2nd string 1st fret, 3rd string 0th fret, 4th string 2nd fret, and 5th string 3rd The fret is pressed. For chord G, the 1st 3rd fret, 2nd 3rd fret, 3rd string 0th fret, 4th string 0th fret, 5th string 2th fret, and 6th string 3rd fret are pressed. For chord Am, the 1st string 0th fret, 2nd string 1st fret, 3rd string 2nd fret, 4th string 2th fret, and 5th string 0th fret are pressed. For chord F, the 1st and 2nd strings are not sounded, and the 2nd fret of 3rd string, 3rd fret of 4th string, 3rd fret of 5th string, and 1st fret of 6th string are pressed. As a result, in the fourth measure, the target pitch data and the actual pitch data are compared, and in the fourth chord F, it can be seen that the first chord and the second chord are mismatched data. In this example, the scoring result is “80 points” by scoring according to the degree of coincidence.

  Of the control executed by the CPU 45 of the present modification to realize the above method, a different part from the above embodiment (details of the scoring process) will be described with reference to FIG. 11 corresponding to FIG. FIG. 11 is different from step S130 in FIG. 9 in that step S130 ′ is newly provided.

  That is, in FIG. 11, step S110 and step S120 are the same as in FIG. That is, the CPU 45 reads out the performance data stored in step S50 and extracts and analyzes each frequency component by the FFT method, and then converts the analysis result into a chroma vector to generate the actual pitch data. Thereafter, the process proceeds to step S130 ′ newly provided.

  In step S130 ', the CPU 45 designates the number of strings and the string number as described above for each chord based on the chord score information acquired in step S20 and displayed in step S40 by the matching processing unit 45d. The target pitch data thus generated is generated and stored in the target data buffer 45e. The procedure of step S130 'corresponds to the second target data generation procedure described in each claim, and the CPU 45 that executes step S130' functions as a second target data generation means. Thereafter, the process proceeds to step S140 as described above.

  In step S140, as in the above embodiment, the CPU 45 generates the target pitch data generated in step S130 ′ (the number of strings and the string number are specified) by the matching processing unit 45d in step S120. The degree of coincidence is calculated by comparing with the corresponding actual pitch data. Thereafter, the process proceeds to step S150. The procedure of step S140 corresponds to the designated string matching degree determination procedure described in each claim, and the CPU 45 executing step S140 functions as the designated string matching degree determination means.

  In step S150, as in the above embodiment, the CPU 45 performs scoring corresponding to the performance data by an appropriate method based on the degree of coincidence calculated in step S140, and outputs the scoring result to, for example, the RAM 49. Remember. When step S150 is completed, this routine is terminated. The procedure of step S150 corresponds to the second scoring procedure described in each claim, and the CPU 45 that executes step S150 functions as a second scoring unit.

  Points other than the above are the same as in the above-described embodiment, and a description thereof will be omitted.

  In the present modification, in consideration of the tendency when the user actually plays the stringed instrument such as the electric guitar 4 as described above, the target pitch data is generated in a mode in which the number of strings and the string number are designated, and the target sound is generated. The degree of coincidence between the high data and the corresponding actual pitch data is calculated. As a result, it is possible to improve the scoring accuracy in the performance of stringed instruments such as the electric guitar 4, and it is possible to improve convenience and entertainment for the user.

  In the above modification, the target pitch data is prepared in a form in which the number of strings and the string number are designated, and the actual pitch data corresponding to the performance by the user according to the performance method corresponding to the designation is provided. Is generated, and the target pitch data and the actual pitch data are compared. However, the present invention is not limited to this. That is, the target pitch data is prepared as data of a fingering mode in which the normal five or six strings are fully used (not in the mode in which the number of strings and the string number are specified). The specified string number and string number portion may be extracted from the data and compared with the actual pitch data. On the contrary, the target pitch data is prepared in a form in which the number of strings and the string number are specified, while the user normally uses the normal 5 or 6 strings (not the specified playing style) It is also possible to perform the performance with the above performance method, extract only the specified number of strings and string number from the actual pitch data based on the performance, and compare with the target data. Furthermore, target pitch data is prepared as data of a fingering mode in which normal five or six strings are used (not in a mode in which the number of strings and the string number are designated), and the user Perform the performance in the normal performance using full 5 or 6 strings (not the specified performance), and specify the number of strings and the string number from the actual pitch data based on the performance. May be extracted and compared with the designated string number and string number portion of the prepared target eta. In these cases, the same effect as described above is obtained.

  In addition, in the above, the arrow shown in each figure of FIG. 5 etc. shows an example of the flow of a signal, and does not limit the flow direction of a signal.

  The flowcharts shown in FIG. 8, FIG. 9, FIG. 11 and the like do not limit the present invention to the procedure shown in the above-mentioned flow, and the addition / deletion or order of the procedures within the scope not departing from the gist and technical idea of the invention. May be changed.

  In addition to those already described above, the methods according to the above-described embodiments and modifications may be used in appropriate combination.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

4 Electric guitar (stringed instrument)
10 Karaoke equipment (musical performance equipment)
49 RAM (music data storage means)

Claims (2)

Music data storage means for storing karaoke music data including chord information consisting of a plurality of chord progressions, including a performance part of a predetermined stringed instrument;
Music data reproducing means for reading out and reproducing the karaoke music data stored in the music data storage means;
A first target for generating first target pitch data corresponding to the chord in the stringed instrument for each chord included in the corresponding chord information in accordance with the reproduction of the karaoke musical piece data by the music piece data reproducing means. Data generation means;
A performance signal input means for inputting a performance signal output from the stringed instrument by a performance of the stringed instrument by a musical instrument player according to the reproduction of the karaoke music data by the music data reproducing means;
Actual data generating means for generating actual pitch data based on the performance signal input from the performance signal input means;
The degree of coincidence between the first target pitch data and the corresponding actual pitch data is determined by power code data including a root sound of each chord and a sound having a pitch 5 degrees higher than the root sound. Power code coincidence determining means;
First scoring means for scoring the performance of the instrument player according to the degree of coincidence determined by the power code coincidence degree determining means;
A musical performance device characterized by comprising: Music data storage means for storing karaoke music data including chord information consisting of a plurality of chord progressions including a performance part of a predetermined stringed instrument, and reading out the karaoke music data stored in the music data storage means Music data reproducing means for reproducing, and performance signal input means for inputting a performance signal output from the stringed instrument by the performance of the stringed instrument by a musical instrument player according to the reproduction of the karaoke music data by the music data reproducing means; For the arithmetic means provided in the musical sound performance device having
A first target for generating first target pitch data corresponding to the chord in the stringed instrument for each chord included in the corresponding chord information in accordance with the reproduction of the karaoke musical piece data by the music piece data reproducing means. Data generation procedure;
An actual data generation procedure for generating actual pitch data based on the performance signal input from the performance signal input means;
The degree of coincidence between the first target pitch data and the corresponding actual pitch data is determined by power code data including a root sound of each chord and a sound having a pitch 5 degrees higher than the root sound. Power code agreement determination procedure;
A first scoring procedure for scoring the performance of the musical instrument player according to the degree of coincidence determined in the power code matching degree determination procedure;
A musical performance processing program for executing

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