JP4775135B2 - Music score display control apparatus and program - Google Patents

Description

  The present invention relates to a musical score display control device that displays a musical score on a display device.

  Musical instruments are usually performed while looking at the score of the music to be played. For this reason, some electronic musical instruments are equipped with a display device or can be connected to a display device so that a musical score can be displayed on the display device. Such an electronic musical instrument is equipped with a score display control device for displaying a score.

  An electronic musical instrument equipped with a score display control device can display a score of a desired musical piece at any time. Thereby, it is possible to perform while watching the score. However, it is difficult to concentrate on the performance while looking at the score. For this reason, it is considered important to memorize the music in order to perform the performance reflecting the intended musical expression more reliably. If the score is memorized, the movement of the conductor who conducts the ensemble can be seen better, so that the performance according to the intention of the conductor can be performed more appropriately.

To memorize, it is necessary to practice repeatedly. However, it is hard to have a strong will to try to memorize the score by practicing watching the score. But if you don't memorize, you can't play correctly without looking at the score. For this reason, it is considered important to display the musical score in such a way that it can be performed more easily considering the user who has the will to memorize it.
Japanese Patent Laid-Open No. 10-207346

  An object of the present invention is to provide a musical score display control apparatus that displays a musical score so as to encourage memorizing.

The invention according to claim 1 is a musical score display control device for displaying a musical score on a display device.
Musical score data acquisition means for acquiring musical score data for displaying the musical score;
A score display means for displaying a score on the display device using the score data acquired by the score data acquisition means;
Erasing notes from the score displayed by the score display means for erasing the notes after the performance position and within the range determined by the performance difficulty according to the progress of the performance Means,
It is characterized by comprising.

The invention according to claim 2 is a musical score display control device for displaying a musical score on a display device.
Musical score data acquisition means for acquiring musical score data for displaying the musical score;
Musical score display means for displaying a musical score on the display device in such a manner that the musical score data acquired by the musical score data acquiring means is used to delete in advance the note located at the head of the measure indicated by the musical score data;
From the score displayed by the score display means, note erasure means for erasing notes after the performance position according to the progress of the performance,
It is characterized by comprising.

The programs described in claims 3 and 4 have functions for realizing the respective means included in the musical score display control apparatus according to claims 1 and 2.

  According to the present invention, the notes after the performance position are erased from the displayed musical score of the music as the performance progresses. Due to the erasure, a performance operation for performing a correct performance cannot be recognized from the score. Therefore, the user can be prompted to memorize the score. The same applies to a form in which a predetermined note is deleted, that is, thinned out, from the displayed musical score. The progress of the performance can be specified by a virtual automatic performance or by a user's performance operation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
<First Embodiment>
FIG. 1 is a configuration diagram of an electronic musical instrument equipped with a score display control apparatus according to the first embodiment.

  As shown in FIG. 1, the electronic musical instrument includes a CPU 101 that controls the entire musical instrument, a RAM 102 that the CPU 101 uses for work, a program executed by the CPU 101, musical score display music data (score data), and various control instruments. A ROM 103 storing data, an audio system 104 for generating a musical sound to be generated according to an instruction from the CPU 101, a display device 105 such as an LCD, a keyboard 106 for playing by a user, and a switch having various switches Part 107. The score display control apparatus according to the present embodiment is realized by a configuration excluding the keyboard 106 and the audio system 104.

  The display device is used for displaying a score. In the musical score display, the display target portion is updated as the performance progresses. For this purpose, the display target portion, that is, the progress of the performance is specified in a manner linked with the automatic performance. Therefore, the switch unit 107 includes, as various switches, a start / stop switch for instructing the start and end of automatic performance and a tempo setting switch for setting the tempo.

FIG. 2 is a diagram for explaining the configuration of song data.
The music data has display data (hereinafter referred to as “note data”) for each musical note (musical tone) in order to arrange musical notes to be arranged on the score. As shown in FIG. 2, the note data includes data (measure data) indicating a measure in which a corresponding note is arranged, beat data indicating a position on the measure, and pitch data indicating a position where a note image is to be arranged. , Note length data indicating the note generation period, note shape data indicating the type of the note image, and difficulty data indicating the difficulty in performance operation for generating the corresponding musical sound. Yes. The music data has a configuration in which such note data is arranged in the order of performance. Here, for convenience, the description will be made on the assumption that each note data is stored in one address.

  In FIG. 2, “8 minutes left” and “8 minutes right” are written as the note shape data. “Eight minutes” indicates that the type of note symbol is an eighth note, “Left” and “Right” should be displayed in the form of tuplets, and among multiple note symbols that are tapped. The relative positional relationship of is shown. That is, “left” indicates that it is located on the left side among a plurality of note symbols that are tapped. By adopting note shape data indicating such a situation, as shown in FIG. 11, a tuplet note image can also be displayed accurately. The difficulty level indicates that the larger the value, the more difficult the performance.

  In the following description, for convenience, it is assumed that only one piece of music data as shown in FIG. In addition, it is assumed that the musical score data is always displayed. The operation under such an assumption will be described in detail with reference to flowcharts of various processes in FIGS. 3 to 10 and explanatory diagrams in FIGS.

  FIG. 3 is a flowchart of the entire process. First, the entire process will be described in detail with reference to FIG. The entire process is realized by the CPU 101 executing a program stored in the ROM 103.

  First, in step SA1, initialization is performed by turning on the power. In the subsequent step SA2, a score display process for displaying a score on the display device 105 is executed with reference to the music data shown in FIG. As a result, a score as shown in FIG. 11 is displayed on the display device 105. In the musical score display process, as shown in FIG. 4, for each musical note data constituting the music data, a musical note display image data is created in step SB1 by arranging the corresponding musical note image at a position where it should be arranged. By executing, the score is displayed.

  In step SA3 following step SA2, a switch process for responding to a user operation on the switch unit 107 is executed. In the next step SA4, a guide process is executed for updating the score display contents as the performance progresses. In the next step SA5, a keyboard process for responding to a user operation on the keyboard 106 is executed. After the execution, other processes are executed in step SA6, and then the process returns to step SA3. As a result, while the power is on, the processing loop formed in steps SA3 to SA6 is repeatedly executed so as to respond to the user's instruction.

Hereinafter, a subroutine process excluding the score display process (FIG. 4) executed in the overall process will be described in detail.
FIG. 5 is a flowchart of the switch process executed as step SA3. In the subroutine processing, the switch processing will be described in detail with reference to FIG.

  First, in step SC1, start / stop processing is executed to respond to the operation of the start / stop switch. Next, the process proceeds to step SC2, and a tempo setting switch process for responding to an operation to the tempo setting switch is executed. Thereafter, in step SC3, other switch processing for responding to an operation on the other switch is executed, and then the series of processing is terminated.

Here, the subroutine process executed in the switch process will be described in detail.
FIG. 6 is a flowchart of the start / stop switch process. First, the switch process will be described in detail with reference to FIG.

  As described above, the score display content is updated in a manner linked to the automatic performance (progress). In this switch process, a process for responding to the start or end of the automatic performance is executed according to the situation. The automatic performance is virtually performed by the guide process in step SA4.

  First, in step SD1, it is determined whether or not the start / stop switch is turned on. When the user operates the switch, the switch unit 107 notifies that effect, so the determination is YES and the process proceeds to step SD2. If not, that is, if the user has not operated the switch, the determination is no, and the series of processing ends here.

  In step SD2, the value of the variable STF for managing the virtual automatic performance is inverted, that is, 0 if it is 1, and 1 if it is 0. 1 is a value indicating that automatic performance is being performed, and 0 is a value indicating that automatic performance is not being performed. In the subsequent step SD3, it is determined whether or not the value of the variable STF is 1. If the value is not 1, the determination is no and the process proceeds to step SD10, and if not, the determination is yes and the process proceeds to step SD4.

  An inverted triangle arranged above FIG. 11 is a cursor indicating the performance position. In step SD4, the cursor is placed at the position of the first note image. In the next step SD5, an initial value, that is, a value indicating the first note data is substituted into a variable AD for managing the progress of the automatic performance. In the next step SD6, the note length data in the note data designated by the value of the variable AD is read, and after the reading, the process proceeds to step SD7 and is substituted into the variable T. Thereafter, the process proceeds to step SD8. Thereafter, the memorization process is executed in step SD8, and the timer is started in step SD9, and then the series of processes is terminated.

  In the memorization process in step SD8, as shown in FIG. 7, a process for deleting the note image designated by the value of the variable AD is executed in step SE1. As a result, the note image indicating the musical sound to be generated next is erased from the score. In the present embodiment, by performing such erasure, the user cannot perform a performance that relies heavily on the score, and the user is encouraged to memorize the score. In addition, the user can check how much the musical score can be memorized depending on whether or not the performance has been performed correctly even if the note image is deleted.

  The note length data is data expressed by numbers such as 24 and 12 as shown in FIG. The number is expressed based on a predetermined time (hereinafter, “minimum unit time”). The timer is for measuring the minimum unit time. The timer is a hard timer installed in the CPU 101 or a soft timer that measures time by an interrupt process executed at regular time intervals.

  In step SD10 in which the determination in step SD3 is NO and the process proceeds to step SD10, since the user has instructed the end of the automatic performance, the cursor is deleted. In the next step SD11, the timer is stopped. Thereafter, a score display process is executed in step SD12 to make the score display contents the same as before the start of the automatic performance, and then the series of processes is terminated.

  FIG. 8 is a flowchart of the tempo setting switch process executed as step SC2 in the switch process of FIG. Next, the switch processing will be described in detail with reference to FIG. The tempo setting switch corresponding to the operation in this switch processing is composed of, for example, an up switch for instructing to increase the tempo and a down switch for instructing to decrease the tempo.

  First, in step SF1, it is determined whether or not the tempo setting switch is turned on. If the user operates either the up switch or the down switch, the determination is YES, and the value (tempo value) that has been assigned to the variable TEMPO in step SF2 depends on the type of the operated switch. The updated value is newly substituted, and in the next step SF3, the setting of the minimum unit time is updated in accordance with the value of the variable TEMPO, and then the series of processes is terminated. Otherwise, the determination is no and the series of processing ends here.

  Since the note length data is expressed based on the minimum unit time, the tempo increases when the time is shortened, and the tempo decreases when the time is lengthened. From this, it is possible to change the tempo, that is, the speed of automatic performance by changing the setting of the minimum unit time.

Returning to the description of the subroutine processing executed in the overall processing of FIG.
FIG. 9 is a flowchart of the guide process executed as step SA4 in the overall process. Next, the guide process will be described in detail with reference to FIG.

  First, in step SG1, it is determined whether or not the value of the variable STF is 1. If the value is not 1, the automatic performance is not being executed, so the determination is NO, and the series of processing is terminated here. Otherwise, the determination is yes and the process moves to step SG2.

  In step SG2, the value of the timer is acquired, and it is determined whether or not the minimum unit time has elapsed since the previous determination that the minimum unit time has elapsed. If the minimum unit time has elapsed, the determination is yes and the process moves to step SG3. Otherwise, the determination is no and the series of processing ends here.

  In step SG3, the value of the variable T is decremented. In the next step SG4, it is determined whether or not the value of the variable T is 0 or less. When the sound generation period of the musical notes at the performance position has passed, the relationship is satisfied, so the determination is YES, and after incrementing the value of the variable AD in step SG5, the process proceeds to step SG6. Otherwise, the determination is no and the series of processing ends here.

  In step SG6, it is determined whether or not the value of the variable AD is equal to or less than the final address, that is, the value indicating the address where the last note data exists (final address value). If the automatic performance has not ended, the relationship is satisfied, so that the answer is YES and the process proceeds to step SG7. Otherwise, the determination is no and the process moves to step SG12.

  In step SG7, the cursor is moved to the position of the note image arranged with the note data specified by the value of the variable AD. In the subsequent step SG8, the note length data in the note data is read out and substituted into the variable T in the next step SG9. In the next step SG10, a note image arranged with note data designated by a value obtained by subtracting 1 from the value of the variable AD is displayed as a rest image, that is, a rest image instead of the note image. If the note image is the last one of the previous bar, a rest image for the entire bar is displayed. Otherwise, a rest image corresponding to the note image is displayed. After that, the memorizing process is executed in step SG11, and then the series of processes is terminated.

  As shown in FIG. 12, when the performance position moves to the next bar, the rest image of all rests is displayed in the previous bar by executing the process of step SG10. The musical note image indicated by the cursor is erased by executing the music notation process in step SG11 thereafter. When the performance position moves to the position of the next note image, the rest image of the quarter rest is displayed by executing the process of step SG10. In this way, together with erasing the musical note image at the performance position, the musical score of the previous performance location is not known, so that the musical tone to be pronounced at the current performance location cannot be recalled from the performance score. , Urge you to do a more reliable memorization.

  In step SG12 in which the determination in step SG6 is NO and the process proceeds to step SG12, since the automatic performance (guide) is completed, the cursor is deleted. In the next step SG13, 0 is substituted into the variable STF. Thereafter, the timer is stopped in step SG14, and the score display process is executed in step SG15, and then the series of processes is terminated.

FIG. 10 is a flowchart of the keyboard process executed as step SA5 in the overall process of FIG. Finally, the keyboard process will be described in detail with reference to FIG.
First, in step SH1, a change in the state occurring in the key provided on the keyboard 106 is determined. When the user newly presses the key (ON), the state change caused by the key press is notified from the keyboard 106. Therefore, the state change is determined, and the process proceeds to step SH2, and is assigned to the key pressed. After instructing the audio system 104 to generate a musical tone at a certain pitch, the series of processing ends. When the user performs a new key release (off), a state change due to the key release is notified from the keyboard 106, so that the state change is determined, and the process proceeds to step SH3, where the key released is released. After the audio system 104 is instructed to mute the musical tone having the pitch assigned to, a series of processing ends. If the user has not pressed or released the key, no change in state occurs, so that determination is made and a series of processing ends here.

  In the present embodiment, the note image at the performance position is erased, but note images other than the note image may be erased together. For example, all the note images existing within a range determined from the performance position may be deleted. When deleting the next note image as well, for example, the memorization process is changed to that shown in FIGS. 7 to 14, and the note image at the performance position is deleted in step SE1, and then the next note image is changed to step SI1. You may make it erase further.

  The difficulty level of performance changes depending on the performance content before and after the performance. Therefore, the note image may be erased by paying attention to the difficulty level. For example, when the note image is deleted only when the difficulty level of the note image at the performance position is relatively low, the memorization process may be changed to that shown in FIGS. In the memory processing shown in FIG. 15, the difficulty level data in the note data designated by the value of the variable AD is read (step SJ1), and it is determined whether or not the difficulty level indicated by the difficulty level data is equal to or less than a set value. (Step SJ2), a note image having a difficulty level equal to or lower than the set value is deleted (Step SJ2 → SJ3).

The erasure of the musical note image at the performance position may be performed only for a predetermined position. For example, when only the note image at the head position of the measure is targeted, the memorization process may be changed to the one shown in FIGS. In the memory processing shown in FIG. 16, the beat data in the note data designated by the value of the variable AD is read (step SK1), and whether or not the position on the measure indicated by the beat data is the first beat, that is, the first beat. By determining (step SK2), the note image located at the head beat is deleted (step SK2 → SK3).
Note images within a range determined from the first beat may be deleted together, and it may be determined whether or not to delete in consideration of the degree of difficulty. In any case, since the note image to be deleted must be recognized at the time of performance in order to perform correctly, it is possible to prompt memorization.

Replacing a note image with a rest image makes it impossible to know the type of note image and the pitch indicated by it. Therefore, the note image may be deleted by replacing the note image with a rest image. In that case, as shown in FIG. 17, the note image at the performance position is replaced with a rest image corresponding thereto. For the replacement range and the replacement target, the method of the above-described modification can be employed.
<Second Embodiment>
In the first embodiment (including modifications thereof), the note image to be erased is erased at any time as the performance progresses. In the second embodiment, a note image determined to be erased is erased in advance to prompt the user to memorize.

  The configuration of the electronic musical instrument equipped with the score display control apparatus according to the second embodiment is basically the same as that of the first embodiment. The operation is mostly the same or basically the same. For this reason, the reference numerals are used as they are, and only different portions from the first embodiment will be described.

  FIG. 19 is a diagram for explaining a note image to be erased in advance in the second embodiment. In the second embodiment, as shown in FIG. 19, a note image located at the head of a measure is erased in advance. Further, the musical note image is not replaced with the rest image as the performance progresses.

  In order to realize such a thing, the musical score display process shown in FIG. 4 and the guide process shown in FIG. 9 differ from the first embodiment in the process executed by the CPU 101. In the guide process, since the note image is not converted into a rest image, the process of step SG10 is not executed. Others are the same. Therefore, the score display processing executed in the second embodiment will be described in detail with reference to the flowchart shown in FIG.

  First, in step SL1, a staff score on which a note image is arranged is displayed. In the next step SL2, an initial value is substituted for the variable AD. Thereafter, the process proceeds to step SL3, and it is determined whether or not the note image arranged by the note data specified by the value of the variable AD is the head (start) of the measure. If the beat data of the note data indicates that it is the first beat, the determination is yes, and after displaying the corresponding rest image at the position specified from the note data, the process proceeds to step SL5. Otherwise, the determination is no, the process proceeds to step SL4, the note image specified from the note data is displayed at the position specified from the note data, and then the process proceeds to step SL5.

In step SL5, it is determined whether there is a next note. If the value of the variable AD is not the final address value, there is other note data to be processed. Therefore, the determination is YES, the process proceeds to step SL6, the value of the variable AD is incremented, and the value after the increment is used. After the designated note data is read, the process returns to step SL3. Otherwise, the determination is no and the series of processing ends here.
<Third Embodiment>
The difficulty level of performance varies depending on the tempo. The slower the tempo, the more room for performing the performance. Therefore, in the third embodiment, the range for deleting the note image is changed according to the tempo.

  The configuration of the electronic musical instrument equipped with the score display control apparatus according to the third embodiment is basically the same as that of the first embodiment. The operation is mostly the same or basically the same. For this reason, the reference numerals are used as they are, and only different portions from the first embodiment will be described.

  In the third embodiment, the tempo setting switch process and the memorization process are different from those of the first embodiment. Therefore, only these two processes will be described in detail. Further, the same or basically the same processing contents as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted. The same applies to the following.

FIG. 20 is a flowchart of tempo setting switch processing executed in the third embodiment. First, the switch process will be described in detail with reference to FIG.
In the third embodiment, after the process of step SF3 is executed, the process proceeds to step SM1. In step SM1, a range (performance time) for deleting the note image is determined according to the value of the variable TEMPO, and a value indicating the determined range by the minimum unit time number is substituted into the variable MT. The range is determined so that, for example, the range becomes shorter as the tempo increases. After assigning a value indicating the range thus determined to the variable MT, the series of processes is terminated.

FIG. 21 is a flowchart of the memorization process executed in the third. Next, the memorization process will be described in detail with reference to FIG.
First, in step SN1, 0 is substituted for variable ST for confirming the performance time on the music data, and 1 is substituted for variable n in the subsequent step SN2. After the substitution, the process proceeds to step SN3, and it is determined whether or not there is note data designated by a value obtained by adding the value of the variable n to the value of the variable AD. If the note data exists, the determination is yes and the process proceeds to step SN4. Otherwise, the determination is no and the series of processing ends here.

  In step SN4, a value obtained by adding the note length data in the note data to the previous value is substituted into the variable ST. In the next step SN5, it is determined whether or not the value of the variable ST is equal to or less than the value of the variable MT. If the magnitude relationship is established, the determination is YES, and in step SN6, the note image displayed by the note data is deleted, and further, the value of the variable n is incremented in step SN7. Return. Thereby, all the note images existing within the range from the note image at the performance position until the value of the variable ST becomes larger than the value of the variable MT are deleted. Otherwise, the determination is no and the series of processes ends here.

  In the third embodiment, all the note images within the range determined from the tempo are unconditionally erased. However, a condition to be satisfied for performing the erase is determined, and whether or not the condition is satisfied. The erasing may be performed depending on the situation. For example, the difficulty level of performance varies depending on the number of musical sounds to be generated within a certain time. From this, it may be determined whether or not to erase by paying attention to the number of musical sounds (notes). This can be realized, for example, by changing the memorization process of FIG. 21 as shown in FIG.

  In the music notation process shown in FIG. 22, the process proceeds to step SP1 with a determination of YES in step SN5, and after incrementing the value of the variable n, the process returns to step SN3. On the other hand, when the determination is NO, the process proceeds to step SP2 to determine whether or not the value of the variable n is smaller than a predetermined number. If the magnitude relationship is established, the determination is yes and the process proceeds to step SP3, where the number of musical sounds to be generated within the range is relatively small, and is displayed by the note data specified by the value of the variable AD. After erasing the note image being made, the series of processing ends. Otherwise, the determination is no and the series of processing ends here.

In this modification, as described above, one note image at the performance position is erased by the number of notes within the range set according to the tempo, but all the note images within that range are erased. Anyway.
<Fourth embodiment>
In the first and third embodiments, the note image is erased as the automatic performance progresses. On the other hand, in the fourth embodiment, a note image is erased in accordance with a user's performance operation.

  The configuration of the electronic musical instrument equipped with the score display control apparatus according to the fourth embodiment is basically the same as that of the first embodiment. The operation is mostly the same or basically the same. For this reason, the reference numerals are used as they are, and only different portions from the first embodiment will be described.

  In the fourth embodiment, the memory process is not executed to focus on the user's performance operation, and the keyboard process is different from that of the first embodiment. Therefore, only the keyboard process will be described in detail. For this purpose, the score display control apparatus according to the fourth embodiment is realized by a configuration excluding the audio system 104 (FIG. 1).

  FIG. 23 is a flowchart of the keyboard process executed in the fourth embodiment. As described above, the same or basically the same processing contents as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the fourth embodiment, after the process of step SH2 is executed, the process proceeds to step SQ1. In step SQ1, the note image displayed by the note data designated by the value of the variable AD is converted into a rest image. In the next step SQ2, it is determined whether there is any note data located next to the note data. If the note data is present, the determination is yes, the process proceeds to step SQ3, the note image displayed by the note data is erased, and the series of processes is terminated. Otherwise, the determination is no and the series of processing ends here.

  In the fourth embodiment, the note image is erased while paying attention only to the user's performance operation. However, the progress of the automatic performance (virtual automatic performance) is also considered. The erasure may be performed. Thereby, for example, when the user's key depression is delayed, the note image indicating the key to be depressed may be erased before the key depression.

  In the present embodiment (first to fourth embodiments), a note image is deleted or converted into a rest image in units of notes, but the conversion may be performed in units of measures. . The same applies to the deletion of the musical note image at or after the performance position or the conversion to a rest image. Further, the erased note image may be displayed as the performance progresses so that the performance content can be confirmed. The user may be able to arbitrarily set the note image to be erased or converted to a rest image, or the conditions that the note image should satisfy. The above embodiments can be combined in various ways. As is apparent from the above, various modifications can be made.

  A program for realizing the above-described score display control apparatus may be distributed by being recorded on a recording medium such as a CD-ROM, a DVD, or a removable flash memory. Part or all of the program may be distributed via a communication network such as a public network. In such a case, the user can apply the present invention to a computer by acquiring the program and loading it into a computer that can be used as a score display control device. Therefore, the recording medium may be accessible by a device that distributes the program.

It is a block diagram of the electronic musical instrument which mounts the score display control apparatus by 1st Embodiment. It is a figure explaining the structure of music data. It is a flowchart of the whole process. It is a flowchart of a score display process. It is a flowchart of a switch process. It is a flowchart of a start / stop switch process. It is a flowchart of memorization processing. It is a flowchart of a tempo setting switch process. It is a flowchart of a guide process. It is a flowchart of a keyboard process. It is a figure explaining a normal musical score display. It is a figure explaining the score display for memorization (the 1). It is a figure explaining the score display for memorization (the 2). It is a flowchart of memorization processing (modification 1 of a 1st embodiment). It is a flowchart of a memorandum process (the modification 2 of 1st Embodiment). It is a flowchart of a memorization process (modification 3 of 1st Embodiment). It is a figure explaining the score display for memorization (a modification of a 1st embodiment). It is a flowchart of a score display process (2nd Embodiment). It is a figure explaining the score display for memorization (2nd Embodiment). It is a flowchart of a tempo setting switch process (3rd Embodiment). It is a flowchart of a memory process (3rd Embodiment). It is a flowchart of a memorization process (modification of 3rd Embodiment). It is a flowchart of a keyboard process (4th Embodiment).

Explanation of symbols

101 CPU
102 RAM
103 ROM
104 Audio system 105 Display device 106 Keyboard 107 Switch part

Claims (4)

In a musical score display control device for displaying a musical score on a display device,
Musical score data acquisition means for acquiring musical score data for displaying the musical score;
A score display means for displaying a score on the display device using the score data acquired by the score data acquisition means;
Erasing notes from the score displayed by the score display means for erasing the notes after the performance position and within the range determined by the performance difficulty according to the progress of the performance Means,
A musical score display control apparatus comprising: In a musical score display control device for displaying a musical score on a display device,
Musical score data acquisition means for acquiring musical score data for displaying the musical score;
Musical score display means for displaying a musical score on the display device in such a manner that the musical score data acquired by the musical score data acquiring means is used to delete in advance the note located at the head of the measure indicated by the musical score data;
From the score displayed by the score display means, note erasure means for erasing notes after the performance position according to the progress of the performance,
A musical score display control apparatus comprising: A program to be executed by a computer used as a score display control device for displaying a musical score on a display device,
A score data acquisition function for acquiring score data for displaying the score;
A score display function for displaying a score on the display device using the score data acquired by the score data acquisition function;
Erasing notes from the score displayed by the score display function for erasing the notes after the performance position and within the range determined by the performance difficulty according to the progress of the performance Function and
A program to realize A program to be executed by a computer used as a score display control device for displaying a musical score on a display device,
A score data acquisition function for acquiring score data for displaying the score;
A score display function for displaying a score on the display device in such a manner that the musical score data acquired by the score data acquisition function is used to delete in advance a note located at the beginning of a measure indicated by the score data;
From the score displayed by the score display function, a note erasing function for erasing notes after the performance position according to the progress of the performance;
A program to realize

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