JP2008233614A - Measure number display device, measure number display method, and measure number display program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display musically natural measure numbers. <P>SOLUTION: A measure including a first note-on event is detected in MIDI data of an SMF etc. Then it is decided whether the first note-on event is a first beat of the detected measure. When the first note-on event is the first beat of the detected measure as shown in Fig.(a), namely, when the music starts with a downbeat, the detected measure is regarded as a first measure and the measure number is displayed. Further, when the first note-on event is not the first beat of the detected measure, namely, when the music starts with an upbeat, the measure right after the detected measure is regarded as a first measure and the measure number is displayed as shown in Fig.(b). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a bar number display device, a bar number display method, and a bar number display program for displaying a bar number of a bar currently being played.

In general, when creating music data such as a standard MIDI file (SMF) (hereinafter also referred to as “MIDI data”), information such as time signature, tempo information, timbre information, etc. is inserted in the first measure. The usual way is to enter note information from the bar.
FIG. 11 is a diagram illustrating the case of “hometown” as an example.
As shown in the figure, in this method, the first measure of the MIDI data includes setup information such as timbre information, tempo information, and time signature information, and the song to be played actually starts from the second measure. Become. When reproducing such MIDI data and displaying information on which measure is currently being reproduced on a monitor or the like, if the information is displayed as it is, the music starts from the second measure.

Non-Patent Document 1 describes an electronic musical instrument that can create and display a musical score based on song data, and describes that a bar number is also displayed on the musical score.
Further, Non-Patent Document 2 describes reading where the first note (note) of song data is, and then performing automatic performance or displaying a score from there.

There has been proposed an electronic musical instrument that can be easily performed even by people who are unfamiliar with the operation of the musical instrument (Patent Document 1). According to the proposed electronic musical instrument, it is possible to perform an ensemble with a simple operation such as waving.
When people who are unfamiliar with the operation of the instrument perform an ensemble for rehabilitation, etc., a group is formed with a predetermined number of people (for example, about 5 people), and a facilitator (guide role, ensemble leader) is a participant Often leads (students) to perform ensembles.
Therefore, an ensemble system has been proposed by the present applicant that allows each participant to easily perform an ensemble according to the performance and conduct of the facilitator (Japanese Patent Application No. 2005-281060). .
In this ensemble system, a musical sound corresponding to a predetermined length of a performance part assigned to a participant is generated by one performance operation of each participant. Each participant can perform an ensemble by performing a performance operation while viewing information such as the currently playing measure number displayed on the monitor screen or the like.
JP 2000-276136 A “Clavinova CVP-309 / 307/305/303 Quick Guide”, P.17, Yamaha Corporation, [Search March 9, 2007], Internet <URL: http://www2.yamaha.co.jp/ manual / pdf / emi / japan / cla / cvp309j2.PDF> “Clavinova CVP-305 / 303 Owner's Manual”, P.96, Yamaha Corporation, [Search March 9, 2007], Internet <URL: http://www2.yamaha.co.jp/manual/pdf /emi/japan/cla/cvp305j1.PDF>

As in the example shown in FIG. 11, it is musically unnatural that the first bar starts from the second bar, and the first bar is usually counted as the first bar. .
Also, most music is organized into phrases in units of four bars, and in contrast to the display of four bars, eight bars ... (a multiple of 4), experienced musicians say "I'm at the phrase breaker" It is what you feel. Therefore, the measure information of the MIDI data that has been played from the 2nd measure is displayed as the 5th measure in the 4th measure and the 9th measure in the 8th measure. There was a problem that I felt uncomfortable.
Furthermore, weakness is like an “article” in the language, and a measure of weakness is not treated as a measure at the beginning of a song. In music, the bars are usually counted from the next bar without being counted. Therefore, the method of reading where the first note of the song data is located and starting to display the score from that point counts weak bars, resulting in musically unnatural bar number display. was there.

  Accordingly, an object of the present invention is to provide a measure number display device, a measure number display method, and a measure number display program capable of displaying a musically natural measure number.

In order to achieve the above object, the measure number display device of the present invention includes a first means for detecting a measure including a first note-on message in music data, and the first note-on message is detected. A second means for determining whether or not the first beat of the measure is the first beat-on message is not the first beat of the detected measure as a result of the determination by the second means. Is set so that the next measure after the detected measure is the first measure in the measure number display, and the first note-on message is the first beat of the detected measure. In accordance with the progress of the reproduction of the music data based on the third means for setting the detected measure to be the first measure in the measure number display and the setting by the third means, Currently playing Those having a measure number display means for displaying the measure number.
The measure number display method of the present invention is a method executed by a computer, wherein the first step of detecting a measure including the first note-on message in the music data, and the first note-on message A second step for determining whether or not the first beat of the detected bar is a first beat of the detected bar as a result of the determination by the second step and the second step. If not, the next measure after the detected measure is set to be the first measure in the measure number display, and the first note-on message is the first beat of the detected measure. If there is a third step, the detected measure is set to be the first measure in the measure number display, and the music is set based on the setting in the third step. With the progress of data reproduction, it is intended to include the measure number display step of displaying the measure number currently playing.
Furthermore, the measure number display program of the present invention includes a first step of detecting a measure including a first note-on message in the music data in the computer, and the first note-on message of the detected measure. If the first note-on message is not the first beat of the detected bar as a result of the second step of determining whether or not it is the first beat and the determination by the second step, When the next bar of the detected bar is set to be the first bar in the bar number display, and the first note-on message is the first beat of the detected bar, the detection is performed. A third step for setting the determined bar to be the first bar in the bar number display, and the playback progress of the music data based on the setting in the third step. The accompanying, in which to execute the measure number display step of displaying the measure number currently playing.

According to the measure number display device, the measure number display method, and the measure number display program of the present invention, when a measure number currently being played is displayed, a measure that does not include a note or a weakly activated measure is designated as the first measure. Since it is not displayed as a measure, a musically natural measure number can be displayed.
In addition, the music data is analyzed to detect the bars and beats in which the first note-on message exists, so that normal music data remains as it is without any special processing such as inserting special information into the music data. , Can automatically display a natural bar number.

  An embodiment in which the bar number display device or the bar number display method of the present invention is applied to the ensemble system described above will be described. The measure number display device, the measure number display method, and the measure number display program of the present invention are not limited to the ensemble system, and can be widely applied to devices that play music based on music data such as SMF. Is.

FIG. 1 is a block diagram showing the configuration of an ensemble system to which the bar number display device of the present invention is applied.
As shown in this figure, this ensemble system includes a controller 1 and a plurality of (six in the example of FIG. 1) performance terminals 2A to 2F connected to the controller 1 via a MIDI interface box 3. .
The controller 1 controls the entire ensemble system based on a control program, and is composed of, for example, a personal computer.
The performance terminals 2A to 2F are those in which facilitators and participants (students) perform performance operations and generate musical sounds according to the performance operations, and are MIDI-compatible electronic keyboard instruments such as an electronic piano. In the following, when it is not necessary to distinguish the performance terminals 2A to 2F, they are simply referred to as the performance terminal 2.
Each of the performance terminals 2A to 2F is connected to a plurality of MIDI ports provided in the MIDI interface box 3, and is connected to the controller 1 via the MIDI interface box 3. Each performance terminal 2A to 2F is identified by the port number to which the MIDI interface box 3 is connected.
In the example of this figure, for example, the performance terminal 2A connected to the MIDI port 0 is used as a performance terminal for a facilitator (ensemble reader), and the performance terminals 2B to 2F connected to the MIDI ports 1 to 6 are used for students. As a performance terminal. Such a terminal designation is performed by the controller 1.
The performance terminal is not limited to the electronic piano, but may be another form of electronic musical instrument such as an electronic guitar or a drum pad. Of course, in terms of appearance, the terminal is not limited to a natural musical instrument, and may simply be a terminal provided with an operator such as a button.

FIG. 2 is a block diagram showing the configuration of the controller 1. As shown in this figure, the controller 1 operates as a communication unit 11 connected to the MIDI interface box 3, a control unit 12 that controls the controller 1, an HDD 13 that stores control programs and music data, a work memory, and the like. A RAM 14, an operation unit 15 such as a keyboard and a mouse, and a display unit 16 for displaying various information are provided.
The music data (MIDI data) is data such as SMF having a plurality of performance parts and including information for identifying each performance part and performance information (sequence data) of each performance part. In the performance information, a set of time information (delta time) and event information (MIDI event) representing a time interval between events is stored in the order of event occurrence. The head portion (first measure) includes information (setup information) such as tempo information, time signature information, and timbre information of the music.

The control unit 12 reads out a control program stored in the HDD 13 and stores it in the RAM 14, and executes various processes such as a part assignment process 31, a sequence process 32, and a display process 33. The part assignment process 31 is a process for assigning each performance part of music data to a plurality of performance terminals 2. The sequence processing 32 is a sound source such as sound generation instruction data or mute instruction data for generating a musical tone in the performance part assigned to the performance terminal of the music data in accordance with the note-on message or note-off message received from each performance terminal 2. In this process, control data is generated and transmitted to a sound source built in the performance terminal 2 at a timing at which the musical sound should be generated. The display process 33 is a process for displaying on the display unit 16 various information for performing an ensemble such as the currently playing bar number.
The operation unit 15 is mainly used by the facilitator to instruct the operation of the ensemble system. The facilitator operates the operation unit 15 to specify, for example, music data to be played or assign performance parts to each performance terminal 2.
The display unit 16 is a so-called display (monitor), and the facilitator and each user perform a performance operation while viewing the screen displayed on the display unit 16. A large external display can be used as the display unit 16 so that everyone can easily see the display contents.

FIG. 3 is a block diagram showing a configuration of the performance terminal 2. In this embodiment, the performance terminal 2 is a MIDI-compatible electronic keyboard instrument, and includes a communication unit 21, a control unit 22, a keyboard 23 as a performance operator, a sound source 24, and a speaker 25, as shown in this figure. Yes. A communication unit 21, a keyboard 23, and a sound source 24 are connected to the control unit 22, and a speaker 25 is connected to the sound source 24.
The communication unit 21 is a MIDI interface circuit and communicates with the controller 1 via the MIDI interface box 3.
The control unit 22 is a control unit that controls the performance terminal 2 in an integrated manner.
The keyboard 23 has, for example, 61 keys and 88 keys, and is capable of playing in a 5-7 octave range. In this ensemble system, on / off and keystrokes are made without distinguishing individual keys. Only strength data is used. That is, each key has a built-in sensor for detecting on / off and a sensor for detecting the strength of the keystroke, and the keyboard 23 controls the operation mode of each key (which key is pressed with what strength, etc.). ) Is output to the control unit 22. The control unit 22 creates performance data of the performance terminal 2 based on the input operation signal, and transmits the performance data to the controller 1 via the communication unit 21. Specifically, a note-on message is created and transmitted when the keyboard is pressed, and a note-off message is created and transmitted when the keyboard is released.
The sound source 24 generates a musical sound waveform according to sound source control data supplied from the controller 1 via the control unit 22, and the generated musical sound signal is emitted from the speaker 25.
Note that the sound source and the speaker need not be built in the performance terminal 2. A sound source and a speaker may be connected to the controller 1 so that a musical sound is generated from a place different from the performance terminal 2. Although the same number of sound sources as the performance terminals 2 may be connected to the controller 1, a single sound source may be used.

In the ensemble system configured as described above, one or a plurality of performance parts of music data to be performed are assigned to the performance terminals 2A to 2F used by the ensemble participants. The number of times the student should play the keyboard in one measure (the number of beats) is set. For example, if the number of beats is set to 2 in a 4/4 time tune, the student will play every other beat. The musical sound for two beats of the part assigned to the student is generated by one keystroke.
When a ensemble participant performs a performance operation (for example, keying an electronic piano keyboard) using the performance terminal 2 assigned to him, a note-on message or a note-off message corresponding to the controller 1 is transmitted. The controller 1 generates sound generation instruction data and mute instruction data for the number of beats set in the performance part assigned to the performance terminal 2 based on the input note-on / note-off message, and the performance terminal 2 to send. In addition, the display unit 16 displays, for each participant, the bar number that the participant is currently playing. The performance terminal 2 generates a corresponding musical tone based on the sound generation instruction data and the mute instruction data sent from the controller 1. For example, as described above, when the beat is 2/4 and the number of beats is 2, the first and second beats are generated by the first keystroke in the measure, and the third and fourth beats are generated by the next keystroke. A beat sound is generated.
As a result, each user (student) can perform with a simple operation of pressing the keyboard with one finger, and each user (student) can enjoy with multiple people by taking the tempo according to the facilitator. While performing an ensemble. Further, since the bar number currently being played by each user is displayed on the display unit 16, it is possible to recognize whether the user's performance is delayed or advanced.

The flow of such ensemble processing will be described with reference to the flowchart of FIG.
First, before performing the ensemble, the performance terminals 2A to 2F and the controller 1 are turned on to start the control program (S1). That is, the person (student) participating in the ensemble turns on the performance terminals 2B to 2F used by each person, and the facilitator turns on the performance terminal 2A and the controller 1 used by the facilitator and activates the control program. To do.
Thereby, initial setting is performed, and a screen for ensemble is displayed on the display unit 16.

FIG. 5 is a diagram illustrating an example of a screen displayed on the display unit 16.
In the example shown in this figure, the display screen 41 has a song name display area 42, a display area 43 for the time signature and the total number of measures, an area 44 for selecting a performance song, and a measure number that is played for each participant in the ensemble. And an area 45 for displaying part assignment, a play button 46 for instructing start of performance, a stop button 47 for instructing stop of performance, and the like.
As shown in the figure, in the region 45, buttons 48 corresponding to the participants (facilitators and P1 to P5 corresponding to the students 1 to 5) are arranged on the left side, and for each participant, There is provided an area (BAR) 49 for displaying a measure number currently being played by a person and an area (PART) 50 for displaying a part name assigned to the person.
FIG. 5 shows a state in which “1” is displayed for all the participants in the bar number display area BAR49, and the part names assigned to the respective participants are displayed in the part name display area PART50. However, when step S1 is executed, “-” is displayed for all participants in the bar number display area BAR49, and the part name display area PART50 is blank.

Next, the facilitator selects a performance tune to perform ensemble (S2). This processing is performed by selecting a song to be played using the operation unit 15 from among the songs displayed in the area 44 of the display unit 16. When a performance song is selected, the MIDI data of the song is read from the HDD 13 to the RAM 14.
When a musical piece is selected and the MIDI data of the musical piece is read, the control unit 12 executes a part assignment process for assigning the musical performance parts of the musical piece to a plurality of connected performance terminals 2 (S3). For example, the control unit 12 performs a process of sequentially assigning performance parts of performance songs to attendees' performance terminals one by one. The facilitator can change the part assignment using the operation unit 15 when necessary. As a result, as shown in FIG. 5, the part name assigned to each participant is displayed in the part name display area PART50.
Next, a process of setting a bar to be displayed as the first bar when displaying the bar number being played (first bar setting process) is performed (S4).

FIG. 6 is a flowchart showing the flow of the first bar setting process (S4).
In this process, first, a measure including the note-on message described at the beginning in the MIDI data of the selected music is detected (S11). As described above, the first portion (first measure) of the MIDI data includes the tempo information, time signature information, tone color information, and the like of the music, and the first note-on message is included in the first measure. Not a translation. Therefore, the measure number (measure number in MIDI data) and beat to which the first note-on message belongs is calculated from the delta time information corresponding to the first note-on message in the MIDI data and the time signature information. Other methods may be used.

Next, it is determined whether or not the song is weakly activated (S12). That is, the beat detected in step S11 is subtracted from the number of beats for one measure to determine whether or not there is weakness. In the bar containing the first note-on message, when the note-on message timing is the timing of the first beat of the bar, it is determined that it is not weak (strong), and when it is not the timing of the first beat (first If it is after 2 beats), it is determined to be weak.
As a result, in the case of weak occurrence, it is set so that the bar following the bar containing the first note-on message detected in step 11 is displayed as the first bar when displaying the bar number (S13). If not (strongly upset), the measure detected in step S11 is set to be displayed as the first measure when displaying the measure number (S14).

  For example, when the measure containing the first note-on message is the second measure of the MIDI data, and the song is a strong song, the second measure of the MIDI data is displayed as the first measure. Is stored in a predetermined area (register) set in the RAM 14. If the song is a weak song, the third measure that is the next measure after the second measure of the MIDI data containing the first note-on message is displayed in the first measure when the measure number is displayed. Therefore, the numerical value “−2”, which is the difference, is stored in the register. As will be described later, when a bar number is displayed in the bar number display area BAR49, a numerical value ("-1" or "-2") stored in the register is added to the bar number of MIDI data, Displays the value when the value is positive.

FIG. 7 is a diagram for explaining the bar numbers displayed by performing the first bar setting process.
(A) in FIG. 7 is a strong tune, and the first measure of MIDI data includes setup information such as tempo, time signature information and timbre information, and the first MIDI message is included in the second measure. ing. As shown in the figure, “-” is displayed at the timing of the first measure of the MIDI data by the first measure setting process, and when the timing of the second measure of the MIDI data is reached, the first measure “ 1 "will be displayed. As the performance progresses, the bar display is sequentially updated as “2”, “3”...
In addition, in the case of the weakly activated music shown in (b), setup information is included in the first measure of MIDI data, and note information (note-on) is included in the second measure. Since the note-on message is located after the second beat of the second measure (in this example, the fourth beat), the third measure of the MIDI data is displayed as the first measure in the measure number display by the first measure setting process. Will be displayed. That is, “−” is displayed at the timing of the first measure and the second measure of the MIDI data, and “1” is displayed at the timing of the third measure.
In order to display that the first measure has not been reached, it may be displayed in another form instead of “-”, or nothing may be displayed.

After such first measure setting processing (S4), when an operation for instructing the start of an ensemble (for example, clicking the play button 46 on the display screen 41) is performed (S5), the performance processing (S6) is started. Is done.
The details of the performance processing will be described later, and is processing for generating a musical sound corresponding to the performance input in response to performance input from the performance terminals 2A to 2F. It consists of a sequence process executed by the control unit 12 in response to a MIDI message sent from the performance terminal. When a participant performs a simple performance operation such as pressing a single key using the performance terminals 2B to 2F, a note-on message and a note-off message are transmitted from the performance terminal to the controller 1. In the controller 1, in accordance with the note-on / note-off message input from the performance terminal, the sound generation instruction data for the note to be generated is generated according to the keystroke of the performance part assigned to the performance terminal by the sequence processing. It transmits to the performance terminal 2. Thereby, the corresponding musical sound is generated from the sound source of the performance terminal 2 and an ensemble is performed. As the ensemble progresses, the bar numbers displayed by the participants displayed in the bar number display area BAR49 are also sequentially updated. The performer grasps the music in units of measures, and establishes the ensemble by performing a performance (key pressing) operation based on strong beats. The performance timing can be determined by displaying strong beats and bar numbers.
After the ensemble of the music selected in the performance process S6 is completed, the facilitator determines whether or not to end the ensemble (S7). If the performance is to be continued, the performance music selection process in step S2 is performed. Thereafter, the same processing as described above is performed.

Details of the performance process (S6) will be described with reference to FIGS.
FIG. 8 is a flowchart showing a flow of processing executed when the keyboard 23 is operated in the performance terminal 2.
When the user presses the keyboard 23 of the performance terminal 2 with a finger (S21), the operation signal is sent from the keyboard 23 to the control unit 22, and the control unit 22 transmits a note-on message to the controller 1 (S22). As described above, this note-on message includes velocity information indicating the strength of keystroke.
When the user returns the keyboard 23 to the original position (releases his / her finger) (S23), an operation signal is sent from the keyboard 23 to the control unit 22, and the control unit 22 transmits a note-off message to the controller 1 (S24). ).

FIG. 9 is a flowchart showing a flow of sequence processing executed in the controller 1 when a note-on / note-off message is received from the performance terminal 2.
When the controller 1 receives a note-on message or a note-off message from the performance terminal 2 (S31), the controller 1 displays the type (note-on or note-off) and content (velocity information) of the received message and its reception timing (time). Each performance terminal is stored in the RAM 14 (S32). As will be described later, the performance parameters (tempo, rhythm, dynamics, etc.) of each performance terminal 2 can be acquired using this information.
If the received message is a note-on message (YES at S33), the length of the key to be pronounced by the keystroke from the performance information of the performance part assigned to the performance terminal 2 that transmitted the message. Is read out (S34). For example, as described above, when the number of beats is 4/4 and the number of beats is 2, performance information for two beats is read. When the number of beats is 4, performance information for one beat is read.
Then, sound generation instruction data for generating sound corresponding to the performance information of the first beat is generated, transmitted to the performance terminal 2 (S35), and the next message is waited for. The sound generation instruction data is received by the corresponding performance terminal 2 and supplied to the sound source 24 by the control unit 22, and the corresponding musical sound is generated by the sound source 24 and emitted from the speaker 25.
Then, a bar number display process is executed (S36), and the process returns to step S31 to wait for reception of the next note message.

FIG. 10 is a flowchart showing details of the bar number display process (S36).
In this measure number display processing, first, the measure number of the MIDI data to which the performance information to which the sound generation instruction information is transmitted in step S35 belongs is obtained (S51), and it is determined whether or not the measure has progressed (S52). That is, based on the delta time information and time information of the performance information, the measure number to which the performance information belongs is acquired in the MIDI data, and it is determined whether or not the measure has progressed compared to the previously acquired measure number. As a result, when the measure is not progressing, this process is terminated.
If the measure is in progress, the process proceeds to step S53, and the measure number displayed in the measure number display area BAR49 is calculated. That is, the bar number to be displayed is calculated by adding the bar number in the MIDI data acquired in step S51 and the contents of the register set in the first bar setting process (FIG. 6).
Then, it is determined whether or not the calculated bar number is a value equal to or greater than 1 (S54). If the calculated bar number is a negative number or 0, the bar number display process is terminated. As described above, “−” is displayed in the bar number display area BAR49 in the initial state, and when the calculated bar number is a negative number or 0, the “−” is displayed. Become.
On the other hand, when the calculated bar number is a value of 1 or more, the value is displayed at the position of the participant to which the part is assigned in the bar number display area BAR49 (S55).
In this way, the measure currently being played is determined for each part (participant), and a measure number having no unnaturalness is displayed for each part.

On the other hand, when the message received from the performance terminal 2 is a note-off message (NO in S33), the controller 12 of the controller 1 generates corresponding mute instruction data and transmits it to the performance terminal (S37). ). The mute instruction data is received by the corresponding performance terminal 2, supplied to the sound source 24 by the control unit 22, and the corresponding musical sound that was sounded in response to the note-on message is muted.
Next, the elapsed time from the reception of the preceding note-on message to the reception of this note-off message is measured using the information stored in the step S32 (S38), and based on the measured elapsed time, The tempo of performance by the user of the performance terminal is calculated and set (S39).
Next, it is determined whether or not there is performance information to be subsequently generated in the performance information read in step S34 (S40). When the result of the determination is YES, the sound generation instruction data and the mute instruction data corresponding to the performance information to be sounded are created and transmitted to the performance terminal 2 (S41). That is, the delta time of the performance information to be sounded is counted using the tempo calculated in step S39, and the sound generation instruction data corresponding to the performance information is transmitted to the performance terminal 2 when the sound generation timing comes. . At this time, the velocity information included in the sound generation instruction data is also a value corresponding to the strength of the user's keystroke, as described above. Then, when the sound length has elapsed, the corresponding mute instruction data is transmitted to the performance terminal 2. Such processing is repeated, and sound source control data such as sound generation instruction data and mute instruction data is transmitted to the corresponding performance terminal 2 for all performance information to be sounded by the keystroke, and then the process returns to step S31 to return to the next note. Wait for receipt of on message.
In the performance terminal 2 that has received the sound generation instruction data, the sound generation instruction data is supplied to the sound source 24 by the control unit 22 to generate the corresponding musical sound, and when the mute instruction data is received, the corresponding musical sound is muted. .
In this way, the performance information for the number of beats read in step S34 is pronounced at the tempo calculated in step S39.
Each time the user presses the keyboard once, the above process is repeated, and according to the keystroke of the keyboard, the performance information having a length corresponding to the number of beats set is played according to the strength of the keystroke. Can be performed at a tempo according to the volume and keystrokes.

Although FIG. 5 shows an example in which only the currently playing bar number is displayed on the display screen 41 and the beat position is not displayed, both the currently playing bar number and beat position are displayed. You may do it.
In the embodiment described above, since the number of times the student should press the keyboard (number of beats) in one measure is set, the measure number display processing (FIG. 9, S36) is performed in step S35. Although it was executed later, when the performance information for a plurality of measures is reproduced by one beat, the measure number display processing may be executed after step S41.
Further, in the above description, the setup information is stored in the first bar of the MIDI data. However, the setup information is stored in the first bar and the second bar, and the note message is stored from the third bar. Even if it is, it is possible to display bar numbers without musical unnaturalness.
Furthermore, in the above description, the embodiment in which the bar number display device and the bar number display method of the present invention are applied to an ensemble system has been described. However, the present invention is not limited to this, and The number display method can be applied to any device that displays a measure number being played in a device that performs based on MIDI data.

It is a block diagram which shows the structure of the ensemble system to which the bar number display apparatus of this invention was applied. It is a block diagram which shows the structural example of a controller. It is a block diagram which shows the structural example of a performance terminal. It is a flowchart which shows the flow of a process of an ensemble system. It is a figure which shows an example of a display screen. It is a flowchart which shows the flow of a 1st measure setting process. It is a figure for demonstrating a 1st measure setting process, (a) is a figure which shows the case of the music which starts by strong occurrence, (b) is a figure which shows the case of the music which starts by weak occurrence. It is a figure which shows the flow of a process when the keyboard of a performance terminal is operated. It is a figure which shows the flow of a sequence process. It is a flowchart which shows the flow of a bar number display process. It is a figure for demonstrating the measure information of MIDI.

Explanation of symbols

  1: controller (PC), 2, 2A to 2F: performance terminal, 3: MIDI interface box, 11: communication unit, 12: control unit, 13: HDD, 14: RAM, 15: operation unit, 16: display unit, 21: Communication unit, 22: Control unit, 23: Keyboard, 24: Sound source, 25: Speaker, 31: Part assignment processing, 32: Sequence processing, 33: Display processing, 41: Display screen, Bar number display area 49, Part Name display area 50

Claims (3)

A first means for detecting a bar including the first note-on message in the music data;
Second means for determining whether the first note-on message is the first beat of the detected bar;
If the result of determination by the second means is that the first note-on message is not the first beat of the detected measure, the next measure after the detected measure is the first number in the measure number display. If the first note-on message is the first beat of the detected bar, the detected bar is the first bar in the bar number display. A third means for setting to
A measure number display device, comprising: measure number display means for displaying a measure number currently being played as the music data is reproduced based on the setting by the third means. A method performed by a computer,
A first step of detecting a measure including a first note-on message in the music data;
A second step of determining whether the first note-on message is the first beat of the detected bar;
If the result of determination in the second step is that the first note-on message is not the first beat of the detected measure, the next measure after the detected measure is the first number in the measure number display. If the first note-on message is the first beat of the detected bar, the detected bar is the first bar in the bar number display. A third step to set to
A measure number display method, comprising: a measure number display step for displaying a measure number currently being played as the music data is played back based on the setting in the third step. On the computer,
A first step of detecting a measure including a first note-on message in the music data;
A second step of determining whether the first note-on message is the first beat of the detected bar;
If the result of determination in the second step is that the first note-on message is not the first beat of the detected measure, the next measure after the detected measure is the first number in the measure number display. If the first note-on message is the first beat of the detected bar, the detected bar is the first bar in the bar number display. A third step to set to
A measure number display program for executing a measure number display step for displaying a measure number currently being played as the music data is played back based on the setting in the third step.

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