JP5960488B2 - Musical score playing apparatus and musical score playing program - Google Patents

Description

  The present invention relates to a musical score performance technique for performing performance from music information of a musical score taken electronically, and in particular, a triplet tuplet symbol is not described when determining a note value from a note shape described in a musical score. The present invention also relates to a musical score performance apparatus and a musical score performance program that are required to have correct sound values.

The musical score performance apparatus creates performance information from musical score information such as a drawing position of a note extracted from a musical score file of a PDF or a score captured by a scanner, a pronunciation start time, a duration, and a drawing position of a bar line. A performance is automatically performed based on information. A procedure for extracting musical score information from a musical score and creating performance information is described in Patent Document 1, for example.
Note values such as triplets and five-tuplets (time lengths of musical notes) in the score are different from the time lengths indicated by the actually described notes. For example, as shown in the arrow part of the first bar in FIG. 19, when a triplet is described by an eighth note, the time length is 2/3 of an eighth note.

JP 7-129159 A

When generating the performance information from the score, when determining the note value from the described note shape, a tuplet symbol (number indicating a tuplet) indicating a triplet as shown by the arrow in the first bar of FIG. In some cases, if the symbol (number) can be recognized, the correct tone value can be obtained. However, tuplet symbols are often omitted as shown by the arrows in the third bar of FIG. 19. In this case, when reading the score and creating performance information, the note value is obtained as a normal eighth note. Will end up.
Even if tuplet symbols are described, finger numbers and the like are often described in the score, and finger numbers and tuplet symbols (numbers indicating tuplets) are used when generating performance information from the score. And a reading technique for that purpose is necessary.

  The present invention has been proposed in view of the above circumstances, and even when a tuplet symbol is not described in a score, performance information having a correct note value can be created by specializing in a triplet and automatic performance can be performed. It is an object to provide a musical score performance apparatus and a musical score performance program.

In order to achieve the above object, the musical score playing apparatus of the present invention (Claim 1) includes a bar-specified time calculating means for calculating a bar-specified time from the time signature of a musical piece, a note in a bar, a pronunciation timing of a rest, a note value ( A bar performance time calculating means for calculating a bar performance time from (GateTime), a first comparison means for comparing the calculated bar specified time with the bar performance time, and a bar when the bar specified time does not match the bar performance time. A note value correcting unit that corrects the note, rest sound generation timing, and note value, and the note value correcting unit includes target note determining unit that sequentially determines the correction target note; The tuplet processing means for performing tuplet processing by changing the note value of the note to be corrected in the measure to 2/3, and the specified measure time and the corrected measure performance time by the changed note value are compared. and a second comparing means, before It was repeated comparison by the communication hatching process and the second comparison means for each correction target notes are sequentially determined by the target sound determining means, when the modified measure playing time and the measure specified time equals It is characterized in that the tuplet of triplets is confirmed by the changed note value of each note.

  According to a second aspect of the present invention, in the musical score performance device according to the first aspect, the tuplet processing means also sets the note value of a note having a note value one larger than the correction target note in the measure to 2/3. It is characterized by performing two-way tuplet estimation by changing and performing tuplet processing.

  According to a third aspect of the present invention, in the musical score performance device, the target sound determining means changes the target sound in the order of 64th note, 32nd note, 16th note, 8th note, 4th note, and 2nd note. However, the tuplet processing means repeatedly performs tuplet estimation.

A fourth aspect of the present invention is a musical score performance program to be executed by a computer, and includes the following procedure.
A bar-specified time calculation step for calculating a bar-specified time from the time signature of the music.
A bar performance time calculation step that calculates the bar performance time from the notes in the bar, the sounding timing of rests, and the note value (GateTime).
A tuplet estimation step of comparing the calculated bar specified time and the bar performance time, and estimating that a tuplet exists in the bar when the bar specified time does not match the bar performance time.
Target sound determination step of sequentially determining the corrected target sound marks relative note within a measure.
The note value of the note to be corrected in the measure is changed to 2/3 and tuplet processing is performed, and the specified measure time is compared with the corrected measure performance time based on the changed note value. A tuplet processing step for confirming the tuplet of the triplet with the changed note value of each note when the measure performance time becomes equal.
The tuplet processing is repeatedly performed on correction target notes that are sequentially determined in the target sound determination step until triplet tuplet formation is determined .

  According to a fifth aspect of the present invention, in the musical score performance program according to the fourth aspect, after the note to be corrected is determined in the target sound determination step and the note value of the correction target note is changed in the tuplet processing step, the note value is changed. In the case of the first time, the note value having a note value one larger than the target note is also changed to a 2/3 note value, and the tuplet processing is performed.

  A sixth aspect of the present invention is the musical score performance program according to the fourth aspect, wherein the target notes are changed in the order of 64th note, 32nd note, 16th note, 8th note, 4th note, and 2nd note in order. The encoding process is repeatedly performed.

According to the musical score performance apparatus and the musical score performance program of the present invention, even if the tuplet symbol is not described in the score, the tuplet portion is estimated in the measure when the measure specified time and the measure performance time do not match, Performing tuplet processing for correcting the sound generation timing and note value of notes and rests makes it possible to create performance information having correct note values.
In the tuplet processing, the note value of the correction target note in the measure is changed to 2/3, and the target sound having the same specified measure time and the corrected measure performance time is determined as a tuplet for correcting the note value. Tuplet processing specialized for the triplet most frequently used in the score can be performed.

  Further, when the correction target note is determined by the target sound determination means, tuplet estimation is performed in order from the 64th note to the half note (in which the note value is small), so that the tuplet of the note having a low note value is frequently used. Efficient tuplet processing can be performed on a trending musical piece.

It is a block diagram which shows the function of the automatic performance apparatus incorporating the musical score performance apparatus which concerns on embodiment of this invention. It is a block diagram which shows the hardware structural example of an automatic performance apparatus. It is a model figure explaining the detail of the information which a musical score information storage means memorize | stores. It is a functional block diagram which shows the structure of a performance information preparation means. It is a flowchart figure which shows the production procedure of the performance information by a performance information creation means. It is a model figure which shows an example of a bar information arrangement | sequence. This is a sample score. It is a table | surface which shows the performance information obtained from each note of the score example of FIG. It is a flowchart figure which shows the procedure in the case of calculating measure performance time from a score. It is a model figure which shows an example of an event kind. It is a flowchart figure which shows the whole flow in the case of performing tuplet estimation. It is a flowchart figure which shows the detailed procedure in the case of performing tuplet estimation. This is a sample score. It is a table | surface which shows the performance information at the time of performing a tuplet estimation process with respect to each note of a score example. 14 is a musical score example in which correct tuplet symbols are displayed with respect to the musical score example of FIG. 13. This is a sample score. It is a table | surface which shows the information at the time of performing a tuplet estimation process with respect to each note of a score example. FIG. 17 is a musical score example in which correct tuplet symbols are displayed with respect to the musical score example of FIG. 16. This is a sample score.

Hereinafter, the musical score playing apparatus of the present invention will be described with reference to the drawings.
Figure 1 is a block diagram of an automatic performance apparatus which operates on the computer music performance apparatus of the present invention (score performance program) is incorporated, music files Symbol 憶 for storing music files and PDF score file scanned sheet music a means 1, the score data generating means 2 for generating the musical score information recognizes the score file, a music information storage 憶 means 3 for storing the generated musical score information, performance information generation means for generating performance information from the score data It includes a 4, a performance information storage 憶 means 5 for storing the generated performance information, and musical sound playing device 6 to play sequentially read actually musical performance information, the musical score display means 7 for displaying the music files or music information Configured.
The characteristic configuration of the present invention is that when the performance information creating means 4 creates performance information from musical score information, a tuplet is estimated to obtain a correct note value, and a tuplet estimation program necessary for that purpose is obtained. Functions as part of the performance information creation means 4.

  The hardware of the automatic performance device can be realized by a general-purpose information processing device such as a personal computer. FIG. 2 is a block diagram showing a hardware configuration of an automatic performance device constructed on a computer. A display 11, a mouse 12, a keyboard 13, a ROM 14, a RAM 15, a CPU 16, an HDD 17, and a disk drive 18 are connected to the bus 10. , A MIDI interface 19, an audio interface 20, and a network interface 21 are connected to each other.

The HDD 17 of the computer has a recording medium in which a musical score performance program for taking musical score files to create performance information and performing an automatic performance through the MIDI interface 19, the audio interface 20 or the network interface 21 is mounted on the disk drive 18. Or downloaded from a predetermined URL via the Internet.
The CPU 16 executes various processes (each step) in accordance with a predetermined control program (score performance program) installed or downloaded by the above procedure, and controls the overall score performance apparatus. The score file storage means 1, the score By providing the information generating means 2 and the score information storage means 3 as main functions, the captured score information is stored as electronic information, and the stored information can be displayed on the score display means 7 and the performance information creation means 4 By providing the performance information storage means 5 and the musical sound performance means 6, the musical sound can be automatically played by the performance information generated according to the musical score information.
The RAM 15 temporarily stores information used for processing by the CPU 16.

The score file storage means 1 is composed of a RAM 15 and an HDD 17. As described above, the score file may be imported from the network interface 21 or the like, or may be acquired by connecting a separate image scanner to the computer.
The musical score information generating means 2 includes a program stored in the HDD 17, a CPU 16 that executes the program, and a RAM 15 that is used as a work storage area.
The musical score information storage unit 3 includes a RAM 15 and an HDD 17.
The performance information creating means 4 includes a program stored in the HDD 17, a CPU 16 for executing the program, a RAM 15 used as a work storage area, and the like.
The performance information storage means 5 includes a RAM 15 and an HDD 17.
The musical tone performance means 6 includes a musical score performance program stored in the HDD 17, a CPU 16 for executing the program, a RAM 15 used as a work storage area, a sound source device, an audio interface 20, and the like. The sound source device includes a sound system including a D / A converter, an amplifier, and a speaker.
The score display means 7 includes a score playing program stored in the HDD 17, a CPU 16 for executing the program, a RAM 15 used as a work storage area, and a display 11 such as a liquid crystal display.

As shown in FIG. 3, the score information storage unit 3 includes a page information storage unit 31 and a part information storage unit 32. The part information storage means 32 is configured as an array of part information 33 for the number of parts. Each part information 33 includes timbre, reproduction volume, reproduction localization information, and the like. The page information storage unit 31 records an array of page information 34 for the number of pages. Each page information 34 includes at least paragraph information storage means 35 and staff information storage means 36.

  The paragraph information storage means 35 is recorded as an array of paragraph belonging symbol information 35a effective for all parts belonging to the paragraph or for all staffs. The paragraph belonging symbol recorded in each paragraph belonging symbol information 35a includes a symbol ID unique within the paragraph, symbol category information, symbol type information, parameter array corresponding to the symbol category and symbol type, symbol position within the page, and the like. Is included. Examples of symbol categories include repeated symbols and bar lines. Examples of symbol types include D.C., D.S., repeated parentheses, etc. (category = repeated symbol), single line, double line, repeated start point, repeated end point, end line, etc. (category = bar line).

The staff information storage means 36 is recorded as an array of staff information 36a corresponding to the number of staffs in the page. Each staff information 36a includes a belonging part ID, a belonging paragraph ID, staff member symbol information 36b, and the like. The staff affiliation symbol information 36b is recorded as an array of staff affiliation symbols belonging to the staff.
The staff affiliation symbol recorded in the staff affiliation symbol information 36b includes a symbol ID unique within the paragraph, symbol category information, symbol type information, OnTime, GateTime, parameter array according to the symbol category and symbol type, and within the page. Symbol position (coordinates with the origin at the top left of the page).

Examples of symbol categories include notes, rests, time signatures, clefs, key signatures, accidental symbols, and the like.
Examples of symbol type information include all notes, quarter notes, eighth notes, sixteenth notes, thirty-second notes, etc. (category = notes), all rests, quarter rests, eighth rests, and sixteenth rests. , 32 minutes rest (category = rest) , treble clef, cleaver, etc. (category = clef).
Examples of parameters include pitch (MIDI NoteNo.), Number of dots, ChordID, TimingNo., Beam ID, etc. (category = note), number of dots, ChordID, TimingNo., Etc. (category ID = rest) ), ChordID (ID of the note group that sounds at the same time), TimingNo. (Number indicating the order of sounding), GateTime (value indicating the length of the note and rest), OnTime (time from the beginning of the bar to the start of sounding) ) And the like.

As shown in FIG. 4, the performance information creation means 4 is a measure specified time calculation means 401 for calculating a measure specified time from the time signature of the music, a note in the measure, a pronunciation timing of the rest, and a measure from the note value (GateTime). A measure performance time calculating means 402 for calculating a performance time, a first comparison means 403 for comparing the calculated measure specified time and the measure performance time, and when the measure specified time does not match the measure performance time. It is estimated that a tuplet is present, and is provided with a note value correcting means 404 that corrects a note, rest sound generation timing, and note value.
The note value correcting means 404 is a target sound determining means 441 that sequentially determines the correction target notes, and a tuplet processing means 442 that performs tuplet processing by changing the note value of the correction target notes in the measure to 2/3. And. The tuplet processing means 442 has a modified performance time calculating means for calculating a measure performance time based on the changed note value, and the second comparison means 443 uses the second comparison means 443 for the corrected measure performance time based on the specified measure time and the changed note value. To be compared.
Then, the tuplet processing by the tuplet processing means 442 and the comparison by the second comparison means are repeated for each correction target note, and each time when the specified bar measure time and the corrected measure performance time are equal to each other. It is configured to determine the triplet of triplets by changing the note value.

Next, an overall procedure for creating a score by the score playing apparatus will be described with reference to the flowchart of FIG.
First, musical score information is generated by the musical score information generating means 2 (step 41). The musical score information generating means 2 reads the musical score file from the musical score file storage means 1, and from the drawing information contained in the file, page information, part information, paragraph information, paragraph belonging symbol information, staff information, staff belonging symbol information Are generated by existing techniques that are generally known. However, the chord ID, TimingNo., GateTime, and OnTime of the staff member symbol information are given by the performance information creation means 4.
The generated musical score information is recorded in the musical score information storage means 3.

  Subsequently, performance information is created by the performance information creation means 4 in the sequence of steps 42 to 46.

In step 42, a bar information array as shown in FIG. 6 is created. The bar information includes a page number corresponding to each bar, a paragraph number, a symbol ID of the left bar line, a symbol ID of the right bar line, a bar specified time determined from the time signature of the music, and a bar number.
The bar specified time is obtained by the equation (1).
Measure specified time = TimeBase x 4 / Den x Num (1)
Here, TimeBase is Tick per quarter note, and is 480 in this embodiment.
Den represents the denominator of the time signature of the music (length of one beat), and Num represents the numerator of the music time signature (number of beats in the bar) (measured time calculation means 401).

Next, ChordID indicating a note group that is sounded at the same timing is assigned (step 43). ChordID is determined by the horizontal position and whether it touches the same tail.
TimingNo. Indicating the pronunciation order is assigned (step 44). TimingNo. Is determined by the ChordID and the horizontal position.
GateTime and OnTime are assigned (step 45). GateTime is determined by the type of note and the number of points, and OnTime is determined by GateTime and TimingNo.
Steps 42 to 45 are performed by a generally known existing technique.

FIG. 8 shows an example of performance information of ChordID, TimingNo., GateTime, and OnTime obtained by the procedure up to step 45 for the score of FIG. A note number is a score in which numbers are assigned in order from left to right in the upper row, and then from left to right in the lower row. The category displays notes and rests. In the case of this score, note No. 1 to No. 10 from the upper left, and note No. 11 to No. 16 from the lower left.
In this embodiment, times such as GateTime and OnTime are expressed using Tick. The length of a quarter note is specified as 480Tick.

The procedure for calculating OnTime and measure performance time will be described with reference to the flowchart of FIG. 9, taking the score of FIG. 7 as an example.
TimingNo. Is initialized to 1 (step 91).
The EndTime array is initialized (step 92).
The note No. 1 with TimingNo. = 1 is read (step 93).
OnTime of the note No. 1 is calculated (step 94). Since TimingNo. Is 1, OnTime = 0.
The EndTime of note No. 1 is calculated (step 95). The GateTime of note No. 1 is added to the OnTime of note 1, and EndTime = 240. Add this EndTime to the EndTime array.
Since there is a note of the same TimingNo., The process returns to step 93 (step 96).

The note No. 11 is read (step 93).
OnTime of note No. 11 is calculated (step 91). This also has a TimingNo. Of 1, so OnTime = 0.
The EndTime of note No. 11 is calculated (step 95). The GateTime of the note No. 11 is added to the OnTime of the note No. 11, and EndTime = 480.
Since there are only 240 in the EndTime array and not 480, 480 is added to the EndTime array.
Since the reading of the note with TimingNo = 1 has been completed, the TimingNo. Is updated to 2, and the note with the next TimingNo. Is read out.

Note No. 2 is read (step 93), and OnTime is calculated (step 94). The OnTime of note No. 2 is the shortest time in the EndTime array. In this case, 240.
The EndTime of note No. 2 is calculated (step 95). Adding GateTime of note No. 2 to OnTime of note No. 2 results in EndTime = 480.
Since 480 already exists in the EndTime array, 480 is not added to the EndTime array. Furthermore, since there is no note with TimingNo. = 2, 240 assigned to OnTime of note No.2 this time is deleted from the EndTime array.
Update TimingNo. To 3 and read the note of the next TimingNo.

Note No. 3 is read (step 93), and OnTime is calculated (step 94). The OnTime of note No. 3 is the shortest value in the EndTime array. In this case, 480.
The EndTime of note No. 3 is calculated (step 95). The GateTime of the note No. 3 is added to the OnTime of the note No. 3 to obtain 720. Since this value is not in the EndTime array, it is added to the EndTime array. Since there is still a note of TimingNo.3 this time, TimingNo. Is not updated and 480 in the EndTime array is not deleted.

In step 93, the note No. 12 of the same TimigNo. Is read and OnTime is calculated (step 94). The OnTime of note No. 3 is 480, which is the smallest value in the EndTime array.
The EndTime of note No. 3 is calculated (step 95). OnTime + GateTime = 960 for note No.3. Since this value is not in the EndTime array, it is added to the EndTime array. Since there is no other note with TimingNo. = 3, the smallest value in the EndTime array is deleted.
By performing the same processing, the OnTime of all the notes is calculated and the EndTime array is updated. When all notes have been processed, the largest value remaining in the EndTime array is the measure performance time.

  A characteristic configuration of the present invention is to perform tuplet estimation in a score in step 46 following step 45 and correct ChordID, TimingNo., GateTime, and OnTime. Detailed description of this part will be described later.

Performance information is created from the musical score information subjected to tuplet estimation in step 46 (step 47). The performance information follows the MIDI standard format, and consists of the following array of performance event information.
Note event: Event for starting and stopping sounding of notes Control event: Event for setting sound volume, localization, etc. to sound channel Sound event: Event for specifying sound color of sound channel Tempo event: Event for setting tempo of music

FIG. 10 shows the format of performance event information.
The event type is a number for identifying a note event, a control event, a tempo event, or the like.
Data1 contains the pitch for a note event, a number for identifying volume, localization, etc. for a control event, and a tempo value for a tempo event.
Data2 contains a setting value such as a sound intensity (note that sounding is stopped when 0) for a note event, and a setting value such as volume and panning for a control event.
The time information includes the time (Tick) from the start of the song to the event occurrence.
The channel number is a channel number to be controlled such as sound generation and volume.

A rough flow in step 46 (tuplet estimation) shown in FIG. 5 will be described with reference to the flowchart of FIG.
First, the bar information created in step 42 is read (step 51).
The note information contained in this measure is read out and stored in the note arrangement (step 52).

Reading on a note is performed in the following procedure.
The page information is read based on the page number stored in the bar information.
The paragraph information indicated by the paragraph number of the measure information is read from the page information.
Further, the paragraph belonging symbol that matches the symbol ID of the left measure line of the measure information is read from the paragraph information, and the horizontal position is set as the left end position of the measure. Similarly, the paragraph belonging symbol of the right bar line is read out and set as the right end position of the bar.
Read the staff information in which the paragraph number of the measure information and the belonging paragraph ID match from the page information.
A staff member symbol that is located between a bar left end position and a bar right end position and whose category is a note or a rest is stored in a bar note array.

The measure performance time calculation means 402 calculates measure performance time from the measure note arrangement (step 53).
The first comparison means 403 compares the measure performance time with the measure prescribed time calculated from the measure information by the measure prescribed time calculating means 401 (step 54). If they do not match, tuplet estimation is performed (step 55). If the measure performance time matches the specified measure time in step 54, the process proceeds to the next measure (step 56).

Next, the detailed procedure of tuplet estimation in step 55 shown in FIG. 11 will be described with reference to the flowchart of FIG. 12, taking as an example the case where the performance information shown in FIG. 14 is created from the score of FIG.
When performing tuplet processing, repeated tuplet estimation is performed while changing the target sound to be tupleted in the order of 64th note, 32nd note, 16th note, 8th note, 4th note, and 2nd note. Do.
The tuplet estimation is performed in the order of the 64th note to the half note. In music, the tuplet of a note having a small note value tends to be used more frequently than the tuplet of a note having a high note value. Because.

  In addition, with respect to one target sound, double tuplet estimation is performed when a note value (for example, a half note with respect to a quarter note) one higher than that is changed and when it is not changed. By changing the note value one higher than the target sound (for example, a half note for a quarter note), a triplet composed of different notes can be determined.

  In the musical score of FIG. 13, when the target sound is a 64th note to an eighth note, there is no target note, so the first target note is a quarter note.

First, the bar specified time is calculated (step 101). In the case of this score, since the time signature is 4/4, the bar specified time is 1920 from the above-described equation (1).
The target note determining means 441 determines the note (correction target note) as a quarter note (step 102), and the tuplet processing means 442 determines the note value 480 of all the quarter notes in the measure. The sound value is changed to 320, which is 2/3 (step 103).
If the note value for the correction target note is changed for the first time (step 104), the note value of the half note, which is one higher than the quarter note, is also changed (step 105). The note value of the half note is converted to 640 which is 2/3 of the note value 960.

The corrected performance time calculation means of the tuplet processing means 442 calculates the measure performance time for the corrected note value (step 106). In this case, the measure duration is 960 for three note values 320, and 1600 by adding 640 to this.
The second comparison means 443 compares the measure performance time (1600) with the specified measure time (1920) (step 107). Since the bar performance time (1600) does not coincide with the bar specified time (1920), the process proceeds to step.

In step 108, since the sound value is changed for the first time, the process proceeds to step 109, the changed sound value is restored, and the process proceeds to step 103.
In step 103, the sound value is changed from 480 to 320 again. This time, since the tone value is changed for the second time, step 105 is not performed, and in step 106 the measure performance time is calculated by the corrected performance time calculation means. In this case, the bar performance time is 960 with three note values 320, and 960 (note value not changed) is added to it to become 1920, so it matches the specified bar time (1920) (step 107) and processing Exit.

  In the second step 107, if the score does not match the performance time and the specified measure time, the process proceeds from step 108 to step 110, where it is determined whether or not all the note types have been completed. If so, the process ends. If all note types are not completed, the changed note value is returned to the original state and the process proceeds to step 102 (step 111), the target sound is changed, and the above-described processing is performed again.

  In the case of the score of FIG. 13, the presence of the triplet is found by changing the note value of the quarter note, and the tuplet is changed by changing the note value of note No. 1 to note No. 3 as shown in FIG. Performed performance information is created. Therefore, the score on which the accurate tuplet is displayed is such that the tuplet symbol “3” is displayed on the quarter note as a triplet as shown in FIG.

Next, description will be made regarding a case where the musical score of FIG. 16 is tupleted to create the performance information of FIG.
Also in the case of this score, when the target sound is a 64th note to an eighth note, there is no target note, so the first target note is a quarter note.

First, the bar specified time is calculated (step 101). In the case of this score, since the time signature is 4/4, the bar specified time is 1920 from the above-described equation (1).
The note (correction target note) to be the target sound is determined to be a quarter note (step 102), and the note value 480 of all the quarter notes in the measure is changed to 320 which is 2/3 of the note value. (Step 103).
If the note value for the correction target note is changed for the first time (step 104), the note value of the half note, which is one higher than the quarter note, is also changed (step 105). The note value of the half note is converted to 640 which is 2/3 of the note value 960.

The corrected performance time calculation means of the tuplet processing means 442 calculates the measure performance time for the corrected note value (step 106). In this case, the bar performance time is 1280 with four note values 320, and 1920 is obtained by adding 640 to this.
The measure performance time (1920) is compared with the specified measure time (1920) (step 107). Since the measure performance time coincides with the specified measure time (step 107), the processing is terminated.

In the case of the score of FIG. 16, the performance information that has been tuplet-processed is created by changing the note values of note No. 1 to note No. 5 as shown in FIG. 17, so four quarter notes and two minutes are generated. By changing the note value of a note, the existence of two sets of triplets is revealed.
Accordingly, in a musical score on which an accurate tuplet is displayed, a tuplet symbol “3” is displayed on a triplet on a half note and a quarter note, as shown in FIG. A tuplet number “3” is displayed as a tuplet.

  According to the above-described tuplet processing, a tuplet processing specialized for the triplet most frequently used in a score can be performed. It is possible to estimate triplets.

  4 ... Performance information creation means 401 ... Measure specified time calculation means 402 ... Measure performance time calculation means 403 ... First comparison means 404 ... Sound value correction means 441 ... Target sound determination means 442 ... Tuplet processing Means, 443 ... second comparison means.

Claims (6)

A measure time calculating means for calculating a measure specified time from the time signature of the music;
A measure playing time calculating means for calculating the measure playing time from the note in the measure, the sounding timing of the rest, and the note value;
A first comparison means for comparing the calculated bar specified time and the bar performance time;
When the bar specified time and the bar performance time do not match, it is estimated that there is a tuplet in the bar, and includes a note value, a sound generation timing of a rest, a rest, and a note value correcting means for correcting the note value,
The sound value correcting means is
Target sound determining means for sequentially determining correction target notes;
Tuplet processing means for performing tuplet processing by changing the note value of the correction target note in the measure to 2/3;
A second comparing means for comparing the bar specified time and the modified bar performance time based on the changed note value;
When the tuplet processing and the comparison by the second comparison unit are repeated for each correction target note sequentially determined by the target sound determination unit, and the prescribed measure time and the modified measure performance time become equal A musical score playing apparatus characterized in that a triplet of tuplets is determined by changing the note value of each note.   The tuplet processing means performs tuplet processing by changing the note value of a note having a note value one larger than the correction target note in the measure to 2/3, and performing tuplet processing. The musical score performance device according to claim 1, wherein tuplet estimation is performed.   The target sound determining means changes the target sound in the order of 64th note, 32nd note, 16th note, 8th note, 4th note, and 2nd note, and the tuplet processing means repeatedly estimates the tuplet. The musical score performance device according to claim 1 to be performed. Measured time calculation step for calculating the specified measure time from the time signature of the music;
A bar performance time calculation step for calculating the bar performance time from the notes in the bar, the sounding timing of the rest, and the note value,
A tuplet estimation step for comparing the calculated bar specified time and the bar performance time, and estimating that there is a tuplet in the bar when the bar specified time and the bar performance time do not match;
A target sound determination step of sequentially determining the corrected target sound marks relative note within a measure,
The note value of the note to be corrected in the measure is changed to 2/3 and tuplet processing is performed, and the specified measure time is compared with the corrected measure performance time based on the changed note value. A tuplet processing step for confirming the tuplet of the triplet with the changed note value of each note when the measure performance time becomes equal,
A musical score performance program for causing a computer to repeatedly perform the tuplet forming process on correction target notes sequentially determined in the target sound determination step until triplet tuplet formation is determined . After the note to be corrected is determined in the target sound determination step and the note value of the correction target note is changed in the tuplet processing step, if the note value is changed for the first time, it is one larger than the correction target note. The musical score performance program according to claim 4, wherein the note value having a note value is also changed to a note value of 2/3 and the tuplet processing is performed. 5. The musical score according to claim 4, wherein the correction target note is repeated in the order of 64th note, 32nd note, 16th note, 8th note, 4th note, and 2nd note in order. Performance program.