JP2023146600A - Performance data conversion device and performance data conversion program - Google Patents

Abstract

To enable easy setting of tempo information or sound intensity of performance data.SOLUTION: A performance data conversion device is provided, comprising input means for inputting timing information for each beat of first performance data according to manipulation by an operator, and conversion means for converting the first performance data into second performance data according to the timing information of each beat, where the conversion means derives tempo information of each beat of the second performance data on the basis of the timing information of each beat and tempo information of the first performance data.SELECTED DRAWING: Figure 3

Description

The present invention relates to a performance data conversion device and a performance data conversion program.

Patent Document 1 describes an automatic performance device that automatically plays music data according to an external event. The song data is divided into predetermined sections. During automatic performance, the automatic performance device proceeds with automatic performance in a section corresponding to the external event in response to an external event, and also sets the tempo of the automatic performance based on the interval of the external event.

Japanese Patent Application Publication No. 2003-15647

One way to create and edit performance data for a song is to paste musical symbols such as notes onto music paper on a computer screen while looking at the score, or to perform image recognition of the score. is created and the musical score data is converted into performance data.

In the case of this method of creating performance data, in order to create a rich and natural performance data with tempo and dynamic intonation, it is necessary to make full use of tempo symbols and dynamic symbols, and also delicately adjust the tempo speed and amount of dynamics. There is a need to. For this reason, the user is forced to perform extremely troublesome, time-consuming, and inefficient work, such as going back and forth between editing work and playback work many times through trial and error. Moreover, even if the completed performance data is played back, it cannot be denied that the sound feels unnatural. Moreover, editing to create such intonation is too difficult for beginners. Even if a person has musical taste, it is a difficult task to reflect that sense in performance data. There is a need for a method in which anyone can more easily add intonation to performance data according to their sensibilities.

An object of the present invention is to enable easy setting of tempo information or sound intensity of performance data.

The performance data converting device includes an input means for inputting timing information of each beat of the first performance data based on an operation by an operator, and converting the first performance data into a second performance data based on the timing information of each beat. , and the converting means converts the tempo information of each beat of the second performance data based on the timing information of each beat and the tempo information of the first performance data. Calculate.

The performance data converting device also includes an input means for inputting the sounding strength of the musical tone of each beat of the first performance data based on the operation of the operator; converting means for converting the first performance data into second performance data, and the converting means generates each musical tone of the second performance data based on the sounding strength of the musical tone of each beat. Determine strength.

According to the present invention, the tempo information or sound intensity of performance data can be easily set.

FIG. 1 is a block diagram showing an example of the hardware configuration of a performance data conversion device. FIG. 2 is a block diagram showing an example of the functional configuration of the performance data conversion device. FIG. 3 is a diagram showing a display example of a piano roll. FIG. 4 is a diagram showing a display example of the beat information window. FIG. 5 is a diagram showing an example of performance data before conversion. FIG. 6 is a diagram illustrating an example of timing information and velocity input by a tap operation on a tap area. FIG. 7 is a diagram showing an example of performance data after conversion.

FIG. 1 is a block diagram showing an example of the hardware configuration of a performance data conversion device 100 according to this embodiment. The hardware of the performance data conversion device 100 is, for example, a general-purpose information processing device such as a tablet, a smartphone, or a personal computer.

The performance data conversion device 100 includes a CPU 102, a ROM 103, a RAM 104, a display device 105, a touch panel 107, a sound source section 108, a communication interface 109, a VRAM 110, a scan circuit 112, a bus 113, a sound system 114, and an external device 115. Display device 105 is, for example, a liquid crystal display, and is connected to bus 113 via VRAM 110 . Touch panel 107 is provided on display device 105 and connected to bus 113 via scan circuit 112 . Note that a mouse and a keyboard may be provided instead of the touch panel 107.

The user can give instructions by touching the touch panel 107. The scan circuit 112 detects the position (coordinates) of a touch operation on the touch panel 107 and outputs a detection signal to the CPU 102 via the bus 113 . The CPU 102 can detect a touch operation, a tap operation, a double tap operation, etc. on the touch panel 107.

The external device 115 is, for example, an external storage device, an external computer, a printer, or a MIDI keyboard instrument. The external storage device is, for example, a hard disk, CD-ROM, MO disk, DVD, or memory card. The communication interface 109 is an interface connected to a communication network such as a USB, a LAN, a wireless communication network, the Internet or a telephone line, or a MIDI network, and is connected to the external device 115. The performance data conversion device 100 can input performance data from an external device 115 via the communication interface 109 and display the performance data on the display device 105 via the VRAM 110.

The MIDI keyboard instrument is connected to the bus 113 via a communication interface 109, such as Bluetooth or USB. A MIDI keyboard instrument outputs key press information and key release information in response to a key press operation by an operator. The key press information includes the key number of the pressed key, the key press operation time, and the key press strength.

The CPU 102 loads a program stored in the hard disk of the external device 115 into the RAM 104, and controls the entire performance data conversion device 100 by executing the program loaded into the RAM 104. The hard disk of the external device 115 stores a performance data conversion program executed by the CPU 102 and performance data. The RAM 104 temporarily stores information used for processing by the CPU 102.

Display device 105 is, for example, a liquid crystal display. The display device 105 displays performance data and the like.

The sound source section 108 includes software as a sound source and a DSP for adding effects, and generates a sound signal for generating musical tones corresponding to performance data. The sound source section 108 outputs a sound signal to the sound system 114 based on the performance data. The performance data includes tempo information, time signature information, and multiple note data. Note data includes note number, step time, gate time, and velocity. The note number is the pitch. The step time indicates the start time of sound generation based on the beginning of the song. Gate time is the duration of pronunciation. The end time of sound generation is the total time of step time and gate time. Velocity is the pronunciation strength of a musical note. Further, when the metronome mode is set to ON, the sound source section 108 outputs a metronome sound sound signal to the sound system 114 based on the tempo information and time signature information of the performance data. The sound system 114 includes a D/A converter, an amplifier, and a speaker, and can produce a performance corresponding to the performance data based on the sound signal generated by the sound source section 108.

FIG. 2 is a block diagram showing an example of the functional configuration of the performance data conversion device 100. The performance data conversion device 100 includes an input section 201, a conversion section 202, a playback section 203, and a display control section 204. The performance data conversion device 100 realizes the functions of the input section 201, conversion section 202, playback section 203, and display control section 204 by the CPU 102 executing a performance data conversion program.

The performance data conversion device 100 generates musical score data when an operator pastes musical symbols such as musical notes onto musical staff on the screen of the performance data conversion device 100 or performs image recognition of the musical score. Then, the performance data converting device 100 converts the musical score data into performance data, and records the performance data in the external storage device of the external device 115. Such performance data tends to have a monotonous tempo and dynamics. Therefore, the performance data converting device 100 changes the tempo and dynamics in accordance with the operator's operations in order to create musical performance data that is rich and natural with tempo and dynamic intonation. The method will be explained below.

The CPU 102 selects a song in response to the operator's operation on the touch panel 107, reads performance data corresponding to the selected song from the external storage device, and calculates the tempo and velocity of each beat of the performance data based on the performance data. (sounding strength) is set, and the graphics of each tone of the performance data are displayed on the display device 105 as a piano roll in FIG.

FIG. 3 is a diagram showing a display example of a piano roll according to the present embodiment. The CPU 102 reads the performance data stored in the external storage device, and controls the display device 105 to display the piano roll of FIG. 3 corresponding to the performance data.

In the piano roll of FIG. 3, the horizontal direction of the display screen is the time axis of the performance data, and the vertical direction of the display screen is the pitch of the keyboard instrument. Each tone of the performance data is represented by a rectangular figure. In the rectangular figure of a musical tone, the left side indicates the start time of the sound, and the right side shows the end time of the sound. The playback position 301 of the performance data is a song pointer and is indicated by a vertical line. The CPU 102 advances the playback elapsed time of the performance data in response to the operator's operation on the touch panel 107, and scrolls the rectangular figures of each musical tone so that they move from right to left. When the left side of the rectangular figure of the musical tone passes the reproduction position 301, the generation of the musical tone starts. When the right side of the rectangular figure of the musical tone passes through the reproduction position 301, the generation of the musical tone ends. Playback of the performance data is performed by tapping the playback start button 322 in FIG. The beat information 302 is displayed as the timing of each beat of the time signature of the performance data.

A touch panel 107 is provided on the display device 105 that displays the piano roll of FIG. The operator can operate the touch panel 107 on the piano roll in FIG. When a swipe operation in the left and right directions on the touch panel 107 is performed, the CPU 102 scrolls the piano roll of FIG. 3 in the left and right directions. Furthermore, when a pinch operation is performed in the left and right direction on the touch panel 107, the CPU 102 zooms and displays the piano roll of FIG. 3 in the time axis direction.

When the tap input mode button 311 in FIG. 3 is tapped, the CPU 102 displays the tap area 303, and inputs and sets timing information and velocity (pronunciation strength) based on the tap operation on the tap area 303. The CPU 102 inputs timing information for each beat of the performance data based on the tap timing of the tap area 303, and inputs velocity based on the tap intensity of the tap area 303. The harder you tap, the higher the velocity. Here, the tap strength also includes the tap speed (time from tap on to tap off). Alternatively, the velocity may be input based on the tap position. For example, the higher the tap position in the tap area 303 is, the higher the velocity is, and the lower the tap position in the tap area 303 is, the lower the velocity is. In addition, the magnitude of velocity may be input based on swipe (distance, direction, speed, etc.) or other touch gestures. In short, it is not limited to the above as long as the magnitude of velocity can be controlled by different touch operations. Thereby, the CPU 102 can input both the timing information of each beat of the performance data and the velocity of the musical tone of each beat based on one tap operation by the operator.

When the tap input mode button 311 in FIG. 3 is not tapped, the CPU 102 inputs timing information and velocity (sound strength) based on the key press operation of the MIDI keyboard instrument. The CPU 102 inputs the timing information of each beat of the performance data based on the key depression timing of the MIDI keyboard instrument, and calculates the velocity of the musical tone of each beat of the performance data based on the key depression speed or key depression strength of the MIDI keyboard instrument. input. Thereby, the CPU 102 can input both the timing information of each beat of the performance data and the velocity of the musical tone of each beat based on one key press operation by the operator.

Hereinafter, a tap operation on the tap area 303 will be described as an example, but the same applies to a case where a key press operation on a MIDI keyboard instrument is performed instead of the operation on the tap area 303. The operator inputs timing information and velocity at a timing corresponding to the beginning of each beat of the performance data, and specifies the timing and velocity of each beat.

In the real-time input mode, the CPU 102 starts playing the performance data with the first tap operation on the tap area 303, scrolls and displays the piano roll in FIG. Accordingly, timing information and velocity corresponding to the time of the playback position 301 are input and set.

As the performance data is played back, rectangular figures of musical tones and beat information 302 are displayed scrolling from right to left. The display position of the reproduction position 301 is fixed. The operator performs a tap operation on the tap area 303 in order to specify the timing of each piece of beat information 302. In this case, there are cases where the tap operation is performed before the playback position 301 reaches the beat information 302, and cases where the tap operation is performed after the playback position 301 reaches the beat information 302.

First, a reproduction method in the case where a tap operation is performed before the reproduction position 301 reaches the beat information 302 will be described. Beat information 302 indicates the start time of the beat. If a tap operation is performed on the tap area 303 before the playback position 301 reaches the beat information 302, the CPU 102 skips the playback position 301 to the next beat information 302 and plays the performance data.

Next, a playback method when a tap operation is performed after the playback position 301 reaches the beat information 302 will be described. When the playback position 301 reaches the beat information 302, if no tap operation has been performed on the tap area 303 corresponding to the beat information 302, the CPU 102 stops playing the performance data, and then When a tap operation is performed on the tap area 303 corresponding to the beat information 302, reproduction of the performance data is restarted.

In the step input mode, the CPU 102 does not play back the performance data, but scrolls and displays the piano roll in FIG. Enter the velocity you want to use.

In response to a tap operation on the tap area 303, the CPU 102 inputs timing information and velocity from the beginning to the end of the performance data at a timing corresponding to the beginning of each beat of the music piece.

With real-time input, you can tap-input timing information and velocity while automatically playing the performance data, or with step input, you can tap-input only the velocity while manually scrolling the time forward or backward. .

The beat information 302 at the time closest to the playback position 301 becomes the selected beat information and is displayed in a different color from the other beat information 302. The CPU 102 displays the rectangular figure 304 of the musical tone whose sound generation start time is closest to the playback position 301 with an outline. Further, the CPU 102 displays a ● mark on the rectangular figure 304 of the musical tone whose sound generation start time is the same as the time of the beat information 302 in the selected state.

The CPU 102 can switch the beat information display on and off in response to a tap operation on the beat information display button 323 in FIG. 3 . When the beat information display is on, the CPU 102 displays the beat information window shown in FIG. 4. When the beat information display is off, the CPU 102 does not display the beat information window of FIG. 4.

FIG. 4 is a diagram showing a display example of the beat information window. The CPU 102 displays the contents of the beat information 302 in the selected state in FIG. 3 in the beat information window in FIG. 4. Each beat information 302 is information corresponding to each beat of the performance data, and has a tempo 401, a velocity 402, and a time signature 405. All the beat information 302 from the beginning to the end of the performance data is information automatically generated by the CPU 102 when reading the performance data. Incidentally, the playback speed 403 and metronome sound volume 404 in FIG. 4 are setting values related to playback that are not related to beat information, but are conveniently placed in the beat information window so that they can be quickly operated as needed.

The performance data has a tempo 401, a velocity 402, and a time signature 405. The tempo 401 and time signature 405 are provided, for example, at the beginning of the performance data and when they change. Velocity 402 is provided for each note data within the performance data.

The beat information 302 of the selection information is the beat information closest to the playback position 301 among the plurality of beat information 302 . When the playback position 301 moves relatively, the beat information in the selected state is switched to the beat information in the new selection information. Then, the display of the beat information window in FIG. 4 switches to the beat information in the new selected state.

The beat information window in FIG. 4 displays the tempo 401, velocity 402, and time signature 405 included in the selected beat information 302. If there are velocities of multiple note data in the beat corresponding to the beat information 302, the beat information window in FIG. 4 displays the velocity of the first note data among the multiple note data as the velocity 402. do. In that case, the beat information window in FIG. 4 may display the average value of the velocities of the plurality of note data as the velocity 402.

The CPU 102 can change the tempo 401 and velocity 402 in the beat information window in FIG. 4 in accordance with the operator's operation on the touch panel 107. When the tempo 401 and velocity 402 in the beat information window are changed, they are directly reflected in the values of the converted tempo T2 and velocity V2, which will be described later.

The tempo 401 is, for example, 125, and can be changed by operating a slider, + button, or - button. The velocity 402 is, for example, 69, and can be changed by operating a slider, + button, or - button. The playback speed 403 can be changed by operating a slider. The volume 404 of the metronome sound can be changed by operating a slider. The time signature 405 is, for example, 3/4.

FIG. 5 is a diagram showing an example of performance data before conversion. The bar index indicates a bar number in 3/4 time. The beat index indicates the beat number within each measure of 3/4 time. The performance data in FIG. 5 has a tempo T1 and a velocity V1 for each beat information 302. For example, all beat information 302 has a tempo T1 of 120 and a velocity V1 of 69.

FIG. 6 is a diagram illustrating an example of timing information t1 and velocity V2 input by a tap operation on the tap area 303. The CPU 102 inputs the timing information t1 and the velocity V2 in response to the operator's tap operation on the tap area 303. The tap index indicates an identification number of a tap operation in the tap area 303 in FIG. 3 . When the tap area 303 is first tapped, the CPU 102 starts playing the performance data. In the first tap operation, the timing information t1 becomes 0.

After the timing information t1 and velocity V2 in FIG. 6 are input, when the conversion button in the button 321 in FIG. 3 is tapped, the CPU 102 calculates the tempo T1 before conversion in FIG. Based on t1 and velocity V2, the converted tempo T2 and velocity V3 shown in FIG. 7 are generated.

FIG. 7 is a diagram showing an example of performance data after conversion. The tap index and timing information t1 in FIG. 7 are the same as the tap index and timing information t1 in FIG. 6, respectively. The converted performance data has a converted tempo T2 and a converted velocity V3 for each beat. Since the converted performance data has a tempo of 120 and a 3/4 time signature, the beat time t2 is a time corresponding to one beat of a quarter note, that is, an interval of 0.5 seconds.

First, a method for setting the tempo T2 will be explained. The CPU 102 calculates the tempo T2 after conversion for each beat, based on the tempo T1 before conversion in FIG. 5, the interval between beat time information t2, and the interval between timing information t1, as shown in the following equation (1). do. The beat time information t2 is the time of one beat, and in this example is the time of one beat of a quarter note (0.5 seconds). Of course, if the time signature or tempo changes, the beat time information t2 will not be a fixed value. For example, a method for calculating the converted tempo T2 (=150) of a beat with a tap index of "1" will be shown.

T2=T1×(t2 interval)÷(t1 interval)
=120×(0.5-0)÷(0.4-0)
=150...(1)

In other words, since the interval between beats is 0.5 seconds and the interval between tap inputs is 0.4 seconds, this means that the tempo of the next beat will be increased to 150 and played back.

Further, for example, a method for calculating the converted tempo T2 (=100) of a beat with a tap index of "3" is shown in the following equation.

T2=T1×(t2 interval)÷(t1 interval)
=120×(1.5-1.0)÷(1.5-0.9)
=100

In other words, since the interval between beat times is 0.5 seconds and the interval between tap inputs is 0.6 seconds, this means that the tempo of the next beat is delayed to 100 and then played back.

According to the above calculation method, the converted tempo T2 of a beat with a tap index of "0" cannot be calculated. Therefore, the converted tempo T2 of the beat whose tap index is "0" is set to the same value as the converted tempo T2 of the beat whose tap index is "1". There is no problem with this method because it is usually difficult to suddenly change the tempo from the second beat. If the converted tempo T2 of a beat whose tap index is "0" is set to the pre-converted value (=120), the tempo will suddenly change to 150 from the second beat, resulting in unnatural performance data. This method is not appropriate because it results in

As described above, the conversion unit 202 uses the difference between the timing information t1 of two adjacent beats, the beat time information t2 of the performance data after conversion, and the tempo information T1 of each beat of the performance data before conversion. , calculates tempo information T2 for each beat of the converted performance data.

Next, a method of setting velocity V3 will be explained. The CPU 102 sets the velocity V2 of each beat in FIG. 6 as the velocity V3 of each beat in FIG. Then, the CPU 102 sets the velocity V3 of each beat as the velocity of the musical tone (note data) within each beat.

Next, a case where a plurality of musical tones exist within the same beat will be explained. When a plurality of musical tones exist within the same beat, the CPU 102 sets the velocities of the plurality of musical tones within the same beat of the converted performance data to the same velocity based on the velocity V2 of each beat. For example, if the velocity V2 of a certain beat is 71, the CPU 102 sets the velocities of all tones within that beat to 71.

In addition, when there are multiple musical tones within the same beat, the CPU 102 converts the performance data after conversion based on the velocity V2 of each beat and the velocity of the multiple musical tones within the same beat of the performance data before conversion. The velocities of multiple notes within the same beat may be determined.

For example, when there are multiple musical tones within the same beat, the CPU 102 calculates the converted musical tones based on the ratio of the velocity V2 of each beat to the velocity of the multiple musical tones within the same beat in the performance data before conversion. It is possible to determine the velocities of multiple musical tones within the same beat of performance data.

For example, a case will be explained in which a first musical tone and a second musical tone exist within the same beat. Assume that in the performance data before conversion, the velocity of the first musical tone is 100, and the velocity of the second musical tone is 50. In this case, the ratio of the velocity of the first musical tone to the velocity of the second musical tone is 100:50=1:0.5. It is assumed that the input velocity V2 is 60. In this case, the velocity of the converted performance data is set based on the input velocity V2 and the above ratio. That is, in the converted performance data, the velocity of the first musical tone is set to 60×1=60, and the velocity of the second musical tone is set to 60×0.5=30.

As described above, when the operator taps and inputs the timing information t1 at the timing of his own beat instead of the beat of the performance data, he can change the tempo of the next beat to match the interval between his own beats. . Furthermore, the operator can change the velocity of the musical tone depending on the position of the tap.

The input unit 201 inputs timing information t1 of each beat of the performance data before conversion based on the operation of the operator. The conversion unit 202 converts the performance data before conversion shown in FIG. 5 into the performance data after conversion shown in FIG. 7 based on the timing information t1 of each beat. The conversion unit 202 calculates tempo information T2 of each beat of the performance data after conversion based on timing information t1 of each beat and tempo information T1 of the performance data before conversion.

As shown in equation (1), the conversion unit 202 calculates the difference between the timing information t1 of two adjacent beats, the beat time information t2 of the performance data after conversion, and the tempo information T1 of each beat of the performance data before conversion. Based on , tempo information T2 of each beat of the converted performance data is calculated.

The playback unit 203 plays back the performance data before conversion. In the real-time input mode, the input section 201 inputs timing information t1 based on the time of the playback position 301 while the playback section 203 is playing back the performance data before conversion, and inputs the timing information t1 based on the time of the playback position 301. Enter velocity V2. In the step input mode, the input unit 201 inputs the velocity V2 of the beat specified by the operator's operation while the playback unit 203 is not playing back the performance data before conversion.

As shown in FIG. 3, the display control unit 204 displays, along the time axis, rectangular figures indicating the pronunciation time of each tone of the performance data before conversion, and each piece of beat information 302 based on the time signature information of the performance data before conversion. Controls to display a vertical line figure indicating the time.

The display control unit 204 controls to display the playback position 301 of the performance data before conversion. The input unit 201 inputs timing information t1 based on the displayed playback position 301 of the performance data before conversion, and inputs the velocity V2 of the beat corresponding to the playback position 301 of the displayed performance data before conversion. do. The input unit 201 inputs timing information t1 based on a tap operation on the touch panel 107 or a key press operation on the keyboard.

If the timing information t1 of the beat is input from the input unit 201 before the playback position 301 of the performance data before conversion reaches the beat information (beginning of the beat) 302 of the performance data before conversion, the playback unit 203 skips the reproduction position 301 of the performance data before conversion to the next beat information (start of beat) 302 and reproduces the performance data before conversion.

Furthermore, when the playback position 301 of the performance data before conversion reaches the beat information (beginning of the beat) 302 of the performance data before conversion, the playback unit 203 detects that the timing information t1 of the beat has not yet been input by the input unit 201. If not, the playback of the pre-conversion performance data is stopped, and if the timing information t1 of the beat is inputted from the input unit 201 thereafter, the playback of the pre-conversion performance data is restarted.

In this case, the longer the playback stop time, the slower the tempo of the next beat after conversion. If the tempo becomes too slow, it will be converted into unnatural performance data. In order to prevent this, a lower limit value of the tempo may be set. If the calculated tempo is lower than the lower limit value, the tempo is corrected to the lower limit value and a blank time is inserted before the next beat of the performance data to offset the tempo correction (in other words, the tempo after the next beat is The times of all musical tones may be shifted backward by that amount of time.

The input unit 201 inputs the timing information t1 of each beat and the velocity V2 of each beat of the performance data before conversion based on the operation of the operator. Velocity indicates the pronunciation strength of a musical tone. The conversion unit 202 determines the velocity of each tone of the converted performance data based on the velocity V2 of each beat.

The input unit 201 inputs both the timing information t1 of each beat and the velocity V2 of each beat of the performance data before conversion, based on one operation by the operator. The input unit 201 inputs the timing information t1 of each beat of the performance data before conversion based on the tap timing of the touch panel 107, and inputs the velocity V2 of each beat of the performance data before conversion based on the difference in the touch operation of the touch panel 107. Enter.

The input unit 201 also inputs timing information t1 of each beat of the performance data before conversion based on the key depression timing of the keyboard, and inputs timing information t1 of each beat of the performance data before conversion based on the key depression speed or key depression strength of the keyboard operation. You may input the velocity V2 of each beat.

When a plurality of musical tones exist within the same beat, the conversion unit 202 sets the velocities of the plurality of musical tones within the same beat of the converted performance data to the same velocity based on the velocity V2 of each beat.

In addition, when there are multiple musical tones within the same beat, the conversion unit 202 converts the converted performance based on the velocity V2 of each beat and the velocity of the multiple musical tones within the same beat of the performance data before conversion. The velocities of multiple notes within the same beat of data may be determined.

For example, if there are multiple musical tones within the same beat, the conversion unit 202 performs conversion based on the ratio of the velocity V2 of each beat to the velocity of the multiple musical tones within the same beat of the performance data before conversion. The velocities of multiple tones within the same beat of subsequent performance data can be determined.

As described above, according to the present embodiment, the operator does not need to input tempo marks and dynamic marks on the musical score, or perform troublesome tasks such as adjusting values. Further, while listening to the performance of the music, the operator can easily add intonation to the monotonous performance data according to his own sensibilities. Furthermore, the operator can easily generate performance data with various intonations from one performance data. Different operators generate different performance data. Based on one piece of performance data, it is possible to generate performance data with different intonations for more than the number of operators.

This embodiment can be realized by a computer executing a program. Further, a computer readable recording medium recording the above program and a computer program product such as the above program can also be applied as an embodiment of the present invention. As the recording medium, for example, a flexible disk, hard disk, optical disk, magneto-optical disk, CD-ROM, magnetic tape, nonvolatile memory card, ROM, etc. can be used.

Note that the above embodiments are merely examples of implementation of the present invention, and the technical scope of the present invention should not be interpreted to be limited by these embodiments. That is, the present invention can be implemented in various forms without departing from its technical idea or main features.

201 Input section 202 Conversion section 203 Playback section 204 Display control section

Claims (16)

an input means for inputting timing information of each beat of the first performance data based on an operation by an operator;
converting means for converting the first performance data into second performance data based on the timing information of each beat;
A performance data conversion device, wherein the conversion means calculates tempo information of each beat of the second performance data based on timing information of each beat and tempo information of the first performance data. The conversion means converts the tempo of each beat of the second performance data based on the difference in timing information of two adjacent beats, beat time information, and tempo information of each beat of the first performance data. The performance data conversion device according to claim 1, wherein the performance data conversion device calculates information. further comprising reproducing means for reproducing the first performance data,
The performance according to claim 1 or 2, wherein the input means inputs the timing information based on the time of the reproduction position while the first performance data is being reproduced by the reproduction means. Data conversion device. 4. The performance data conversion device according to claim 1, wherein the input means inputs the timing information based on a tap operation on a touch panel or a key press operation on a keyboard. an input means for inputting the pronunciation strength of each beat of the musical tone of the first performance data based on an operation by an operator;
converting means for converting the first performance data into second performance data based on the sounding strength of the musical tone of each beat;
The performance data converting device, wherein the converting means determines the sounding strength of the musical tone of each beat of the second performance data based on the sounding strength of the musical sound of each beat. further comprising reproducing means for reproducing the first performance data,
6. The performance according to claim 5, wherein the input means inputs the sounding intensity of the musical tone of the beat corresponding to the reproduction position while the first performance data is being reproduced by the reproduction means. Data conversion device. 6. The performance data conversion apparatus according to claim 5, wherein said input means inputs the sounding intensity of a musical tone of a beat specified by an operation by an operator. The input means inputs the pronunciation strength of the musical tone of each beat of the first performance data based on the tap strength or tap position of the touch panel or the key pressing speed or key pressing strength of the keyboard operation. A performance data conversion device according to any one of claims 5 to 7. When a plurality of musical tones exist within the same beat, the converting means converts the pronunciation intensity of the plurality of musical tones within the same beat of the second performance data based on the pronunciation intensity of the musical tones of each beat. 9. The performance data converting device according to claim 5, wherein the performance data converting device has the same sounding strength. When a plurality of musical tones exist within the same beat, the converting means performs the following: 9. The performance data converting device according to claim 5, further comprising determining the sounding intensities of a plurality of musical tones within the same beat of the second performance data. When a plurality of musical tones exist within the same beat, the converting means calculates a ratio between the pronunciation intensity of the musical tones of each beat and the pronunciation intensity of the plurality of musical tones within the same beat of the first performance data. 9. The performance data converting device according to claim 5, wherein the sounding intensities of a plurality of musical tones within the same beat of the second performance data are determined based on the same beat. Along the time axis, a first figure indicating the sounding time of each musical tone of the first performance data and a second figure indicating the time of each beat based on the time signature information of the first performance data are displayed. 12. The performance data conversion device according to claim 1, further comprising first display control means for controlling the performance data as follows. further comprising a second display control means for controlling to display a playback position of the first performance data,
13. The performance data conversion device according to claim 1, wherein the input means inputs the timing information based on a playback position of the displayed first performance data. 14. The input means inputs both the timing information of each beat of the first performance data and the pronunciation intensity of the musical tone of each beat based on one operation by an operator. The performance data conversion device according to any one of the above. The reproducing means includes:
If the timing information of the beat is input by the input means before the playback position of the first performance data reaches the beginning of the beat of the first performance data, the first performance data is played back. playing the first performance data by skipping the position to the beginning of the next beat;
When the playback position of the first performance data reaches the beginning of the beat of the first performance data, if the timing information of the beat has not yet been input by the input means, the first performance 7. The apparatus according to claim 3, wherein the reproduction of the first performance data is restarted when the data reproduction is stopped and the timing information of the beat is inputted by the input means. Performance data conversion device. A performance data conversion program for causing a computer to function as the performance data conversion device according to any one of claims 1 to 15.

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