JP2023089387A - Information processing device, electronic instrument, method and program - Google Patents

Abstract

To provide an information processing device that makes it easy for a user to grasp whether sound grains are aligned.SOLUTION: An information processing device is equipped with a control unit that executes processing of acquiring a difference value concerning a certain value of two sounds, acquiring information indicating magnitude of the acquired difference value, and outputting the information to a reporting unit based on the acquired information.SELECTED DRAWING: Figure 4

Description

The disclosure of the present specification relates to an information processing device, an electronic musical instrument, a method, and a program.

For example, in practicing the piano, it is known to practice by aligning the intensity of sound (so-called aligning the grains of sound). For example, the performer himself or a third person who listens to the performance judges whether or not the grains of sound are aligned. Also, a method in which a user (a performer or a third party) sees information indicating the strength of sound displayed on a piano roll screen shown in Patent Document 1, for example, and determines whether or not the grains of sound are aligned. There is also The user can view the piano roll screen by inputting performance information into the sequencer, for example.

Japanese Patent Application Laid-Open No. 2006-259768

The more beginner the player is, the more difficult it is to hear and judge whether the grains of sound are aligned. Moreover, even if a performer receives advice from a third party who has listened to the performance, it is not easy for the performer to intuitively grasp how well the grains of sound are aligned.

In the example of the piano roll screen, the user performs a performance to generate performance information, inputs the generated performance information to the sequencer, and visually checks the piano roll screen displayed by the sequencer to see if the grains of sound are aligned. to judge what That is, in this example, there is a demerit that it cannot be determined during the performance whether or not the grains of sound are aligned.

In any case, in the above-mentioned methods, it is necessary to judge whether the grains of sound are aligned based on the ear cultivated through musical experience and the information of each note on the piano roll screen. Since it was necessary to determine whether the grains of sound were aligned, it was not easy to grasp whether the grains of sound were aligned.

The present invention has been made in view of the above circumstances, and its object is to provide an information processing device, an electronic musical instrument, a method, and a program that allow a user to easily grasp whether the grains of sound are aligned. be.

An information processing apparatus according to an embodiment of the present invention acquires a difference value between two sound values, acquires information indicating the magnitude of the acquired difference value, and based on the acquired information, A control unit for executing processing for outputting to the notification unit is provided.

According to one embodiment of the present invention, there is provided an information processing device, an electronic musical instrument, a method, and a program that make it easy for a user to grasp whether sound grains are aligned.

1 is a diagram showing the appearance of an electronic musical instrument system according to an embodiment of the present invention; FIG. 1 is a block diagram showing the configuration of an electronic musical instrument according to an embodiment of the invention; FIG. 1 is a block diagram showing the configuration of an information processing device according to one embodiment of the present invention; FIG. 4 is a flow chart showing processing of a lesson program executed by a processor of an information processing device in one embodiment of the present invention; FIG. 5 is a subroutine showing details of first velocity value detection processing in step S102 of FIG. 4; FIG. FIG. 5 is a subroutine showing details of second velocity value detection processing in step S105 of FIG. 4; FIG. FIG. 5 is a subroutine showing details of a difference value acquisition process in step S106 of FIG. 4; FIG. FIG. 8 is a diagram showing a difference value calculation table used when calculating a difference value in step S402 of FIG. 7; FIG. 5 is a subroutine showing details of animation moving image generation processing in step S107 of FIG. 4; FIG. FIG. 10 is a diagram showing a parameter table used when setting parameters for generating an animation moving image in step S502 of FIG. 9; FIG. FIG. 10 is a diagram showing an example of an animation video generated in step S503 of FIG. 9; FIG. FIG. 10 is a diagram showing an example of an animation video generated in step S503 of FIG. 9; FIG. FIG. 10 is a diagram showing an example of an animation video generated in step S503 of FIG. 9; FIG. FIG. 10 is a diagram showing an example of an animation video generated in step S503 of FIG. 9; FIG.

An electronic musical instrument system according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing the appearance of an electronic musical instrument system 1 according to one embodiment of the present invention. As shown in FIG. 1, an electronic musical instrument system 1 includes an electronic musical instrument 100 and an information processing device 200 . The electronic musical instrument 100 and the information processing device 200 are connected via a wired line or a wireless line.

The electronic musical instrument 100 is an electronic keyboard instrument, such as an electronic piano, synthesizer, or electronic organ. FIG. 2 is a block diagram showing the configuration of the electronic musical instrument 100. As shown in FIG. As shown in FIG. 2, the electronic musical instrument 100 includes a processor 110, a keyboard 120, a key scanner 130, an operation section 140, a speaker 150 and a communication section 160.

The processor 110 is an element including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The processor 110 controls the electronic musical instrument 100 by reading programs and data stored in the ROM and using the RAM as a work area.

When the performer presses a key, the processor 110 performs sound generation processing to generate a musical tone corresponding to the pressed key, and causes the speaker 150 to output this musical tone. Also, when the player releases the key, the processor 110 performs a mute process for muting the musical tones associated with the key released.

The keyboard 120 has a plurality of white keys and black keys as a plurality of performance operators. Each key is associated with a different pitch.

The key scanner 130 detects key depression, key release and key depression speed (velocity value) of the keyboard 120 and outputs performance information including the detected pitch information and velocity value to the processor 110 . The velocity value can also be said to be a value that indicates the intensity of sound. Pitch information is also called key number, key number, MIDI key, or note number.

The operation unit 140 includes, for example, key switches, buttons, touch panels, etc. of a mechanical type, a capacitive non-contact type, a membrane type, and the like. By operating the operation unit 140, the performer can set the timbre or adjust the volume, for example.

The communication unit 160 includes wireless and wired units for communicating with external devices. In this embodiment, the communication unit 160 includes an interface conforming to the MIDI (Musical Instrument Digital Interface) standard. Under the control of the processor 110, the communication unit 160 transmits performance information including pitch information and velocity values to the information processing apparatus 200, which is an example of an external device. The performance information has, for example, a data structure conforming to the MIDI standard.

The information processing device 200 is, for example, a notebook PC (Personal Computer) or a smart phone. The information processing device 200 may be a tablet terminal, a portable game machine, a feature phone, a PDA (Personal Digital Assistant), or another form of device.

FIG. 3 is a block diagram showing the configuration of the information processing device 200. As shown in FIG. As shown in FIG. 3, the information processing apparatus 200 includes a processor 210, a RAM 220, a ROM 230, an operation section 240, a communication section 250, a display section 260 and an audio output section 270. The information processing device 200 is placed, for example, on the music stand 170 of the electronic musical instrument 100 .

Processor 210, which is an example of a computer, is, for example, a single processor or multiple processors and includes at least one processor. In the configuration including a plurality of processors, the processor 210 may be packaged as a single device, or may be composed of a plurality of physically separated devices within the information processing device 200. . Processor 210 may also be referred to as a "controller."

The processor 210 includes, as functional blocks, a difference value acquisition section 210a, an information acquisition section 210b, and an output section 210c. Although the details will be described later, the difference value acquiring unit 210a acquires a difference value (hereinafter abbreviated as “two sounds difference value”) regarding a certain value of two sounds. The information acquisition unit 210b acquires information indicating the size of the acquired difference value. The output unit 210c outputs to the notification unit based on the acquired information. By the operation of these functional blocks, the information processing apparatus 200 can allow the user to easily grasp whether the grains of sound are aligned. A method and a program according to an embodiment of the present invention are implemented by causing the functional blocks of the processor 210 to execute various processes.

The RAM 220 temporarily holds data and programs. The RAM 220 holds programs and data read from the ROM 230 and other data necessary for communication.

The ROM 230 is a non-volatile semiconductor memory such as flash memory, EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), etc., and serves as a secondary storage device or an auxiliary storage device. The ROM 230 stores programs and data used by the processor 210 to perform various processes, including a lesson program 232 .

In this embodiment, each functional block of the processor 210 is realized by a lesson program 232 which is software. Note that each functional block of the processor 210 may be partially or wholly realized by hardware such as a dedicated logic circuit.

The operation unit 240 includes, for example, mechanical type, capacitive non-contact type, membrane type key switches, buttons, a keyboard, a mouse, a touch panel, and the like. When a user (for example, a performer) operates the operating section 240 , a signal indicating the content of the operation is output to the processor 210 . Processor 210 controls information processing apparatus 200 based on the input signal. When operation unit 240 includes a touch panel, operation unit 240 also serves as display unit 260 .

The communication unit 250 includes wireless and wired units for communicating with external devices. In this embodiment, the communication unit 250 includes an interface conforming to the MIDI standard. The communication unit 250 receives input of performance information received from the electronic musical instrument 100, which is an example of an external device, and stores it in the RAM 220. FIG.

Display unit 260 is an example of a notification unit. The display unit 260 includes a display panel such as an LCD (Liquid Crystal Display) panel, an organic EL (Electro Luminescence) panel, an LED (Light Emitting Diode) panel, and a display controller. Display unit 260 displays an image based on the output from processor 210 . As an example, based on the output from the processor 210, the display unit 260 displays (outputs) content (animation moving image to be described later) corresponding to the difference value acquired by the difference value acquisition unit 210a.

Audio output unit 270 is an example of a notification unit. The audio output unit 270 has a speaker and a driver. Audio output unit 270 outputs audio based on the output from processor 210 . As an example, based on the output from the processor 210, the audio output unit 270 outputs audio (described later) having content corresponding to the difference value acquired by the difference value acquisition unit 210a.

In the present embodiment, as will be described later, by conveying the degree of uniformity of sound grains to the performer with an animation video, the performer can easily grasp the degree of uniformity of sound grains in the song being played in real time. However, the configuration of the present invention is not limited to this. In another embodiment, the degree of uniformity of sound particles may be conveyed to the performer by audio output from the audio output unit 270 in addition to or instead of the animation video. Exemplarily, "the sound played this time is small (relative to the sound played first)", "the sound played this time is large (relative to the sound played first)", "just right (that is, the first The sound output unit 270 may output a sound that conveys the degree of alignment of the sound grains to the performer, such as "the grains of the sound played this time are aligned with respect to the sound that was played earlier." In this case as well, the performer can easily grasp the degree of uniformity of sound grains in the piece of music being played.

In this embodiment, the information processing device 200 includes the display unit 260 and the audio output unit 270, but the configuration of the present invention is not limited to this. At least one of the display unit 260 and the audio output unit 270 may not be provided in the information processing device 200 but may be a device externally attached to the information processing device 200 .

FIG. 4 is a flow diagram illustrating the processing of lesson program 232 executed by processor 210 in one embodiment of the invention. When processor 210 receives a predetermined operation on operation unit 240, processor 210 causes the operation mode of information processing apparatus 200 to transition to the lesson mode. After transitioning to the lesson mode, execution of the processing of the flow chart shown in FIG. 4 is started.

The electronic musical instrument 100 outputs performance information (for example, MIDI data) according to the key depression operation to the information processing device 200 each time a key depression operation is performed on the keyboard 120 . Processor 210 receives performance information output from electronic musical instrument 100 for each key depression via communication section 250 .

When performance information corresponding to a key depression operation is received (in other words, when a key depression operation is performed in electronic musical instrument 100) (step S101: YES), processor 210 executes a first velocity value detection process (step S102).

In the first velocity value detection process of step S102, the velocity value of the first key depression operation by the performer who started playing is detected. Details of the first velocity value detection process will be described later.

When performance information corresponding to the key depression operation is not received (in other words, no key depression operation has been performed in the electronic musical instrument 100) (step S101: NO), the processor 210 determines whether an operation to end the lesson mode has been performed. It is determined whether or not (step S103). If an operation to end the lesson mode has been performed (step S103: YES), the processor 210 ends the processing of this flowchart and restores the operation mode of the information processing apparatus 200 to the original mode. If an operation to end the lesson mode has not been performed (step S103: NO), processor 210 returns to the process of step S101.

After executing the first velocity value detection process, when performance information corresponding to the key depression operation is received (step S104: YES), the processor 210 executes a second velocity value detection process (step S105).

In the second velocity value detection process of step S105, the velocity value of the player's current (second and subsequent) key depression operations is detected. Details of the second velocity value detection process will be described later.

The processor 210 executes difference value acquisition processing (step S106). In the difference value acquisition process, the difference value between the velocity value detected by the first velocity value detection process of step S102 and the velocity value detected by the second velocity value detection process of step S105 is calculated. That is, processor 210 acquires a difference value between the sound intensity of the first key depression operation and the sound intensity of the current (second and subsequent) key depression operations. Details of the difference value acquisition process will be described later.

In other words, the processor 210 acquires a difference value between the first musical tone corresponding to the player's first operation and the second musical tone corresponding to the player's second operation. The first musical tone and the second musical tone are musical tones played by the performer. The second musical tone is a musical tone after the first musical tone on the time axis. In this embodiment, the first musical tone is the first musical tone played by the performer (the musical tone corresponding to the first key depression operation).

In addition, the musical tones played by the performer, which are later than the second musical tones on the time axis, are regarded as the third musical tones corresponding to the third operation performed by the performer. If a tone is pronounced, processor 210 obtains a difference value between the first tone and the third tone.

The processor 210 executes animation moving image generation processing (step S107). In the animation moving image generation process, an animation moving image is generated according to the difference value acquired in step S106 and output to the display unit 260 . The animation moving image reproduced on the display unit 260 indicates how well the particles of sound are aligned in the performance during the performance. By simply watching the animation video, the performer can easily grasp in real time how well the grains of the sound being played now are aligned compared to the initial sound. Details of the animation moving image generation processing will be described later.

Processor 210 determines whether or not an operation to end the lesson mode has been performed (step S108). If an operation to end the lesson mode has been performed (step S108: YES), the processor 210 ends the processing of this flowchart and restores the operation mode of the information processing apparatus 200 to the original mode.

If an operation to end the lesson mode has not been performed (step S108: NO), processor 210 returns to the process of step S104. After that, when the performance information corresponding to the key depression operation is received (step S104: YES), the processor 210 performs the second velocity value detection process (step S105), the difference value acquisition process (step S106), and the animation movie generation process ( Step S107) is executed. Each time the processing of steps S104 to S108 is executed, an animation video corresponding to the difference value between the sound intensity of the first key depression operation and the sound intensity of the current (second and subsequent) key depression operations is reproduced. be.

In the animation moving image, a content indicating how well the musical tones corresponding to the current (second and subsequent) key-pressing operations are aligned with respect to the musical tones corresponding to the first key-pressing operation is reproduced. Therefore, the performer can practice aligning the sound grains according to the intensity of the musical sound corresponding to the first key depression operation. For example, if you press the key softly the first time, you can practice aligning the grains of weak sounds. Also, if you press the key with a medium force for the first time, you can practice to align the grains of medium sound. Also, if you press the keys strongly the first time, you can practice to align the grains of strong sounds.

FIG. 5 is a subroutine showing the details of the first velocity value detection process in step S102 of FIG. In the first velocity value detection process, the input type of the first key depression operation is determined, and the sound strength of the first key depression operation is acquired according to the determined input type.

In the lesson mode, it is assumed that the performer will play finger etudes such as Hanon in order to practice aligning the grains of sound. At this time, it is unclear whether the practice is one-handed performance practice or two-handed performance practice. In addition, there is a possibility that the performer will practice aligning the grains of sound with music other than practice music such as Hanon. Therefore, in this embodiment, it is determined whether the input type of the key depression operation is a single note, two notes, a chord of three or more notes, or a combination of an accompaniment chord (a chord of two or more notes) and a melody note. .

When a plurality of keys are depressed within a predetermined time (for example, within 20 milliseconds), it is assumed that the musical tone corresponding to the key depression operation is a chord of two or more tones, or a combination of an accompaniment chord and a melody tone. be judged. In other words, when only one key is depressed within the predetermined time, it is determined that the musical tone corresponding to the key depression operation is a single tone.

Note that the input types listed here are only examples. Processor 210 may determine the input type of the key press operation in more detail.

As shown in FIG. 5, processor 210 determines whether or not the musical tone corresponding to the key depression operation is a single tone based on the performance information received in step S101 of FIG. 4 (step S201).

If the musical tone corresponding to the key depression operation is a single tone (step S201: YES), the processor 210 calculates the velocity value included in the performance information received in step S101 of FIG. strength) as the velocity value F _VEL (step S202).

If the musical tone corresponding to the key depression operation is not a single tone (step S201: NO), the processor 210 determines whether two musical tones correspond to the key depression operation based on the performance information received in step S101 of FIG. is determined (step S203).

In finger etudes such as Hanon, the same notes are played in different octaves at the same time, that is, they are played in unison. Therefore, if there are two musical tones corresponding to the key depression operation (step S203: YES), the processor 210 determines whether or not the pitches of the two depressed keys are separated by one octave or more (step S204). ).

If the pitches of the two pressed keys are separated by one octave or more (step S204: YES), it is estimated that the two keys are pressed with fingers of the left and right hands, respectively. In this case, the processor 210 detects the degree of alignment of the sound grains in the performance of one hand and the degree of alignment of the grains of sound in the performance of the other hand. Of the two velocity values (velocity values for each of the two notes) included in the performance information, the velocity value for the higher pitch is acquired as the velocity value FR _VEL , and the velocity value for the lower pitch is acquired as the velocity value FL _VEL . (step S205).

If the pitches of the two pressed keys are not separated by one octave or more (step S204: NO), it is presumed that the two keys were pressed with the fingers of one hand. In this case, it is conceivable that, although an attempt was made to play a single note, the position of the finger for pressing the key was shifted, and another adjacent key was also played. Therefore, the processor 210 acquires the velocity value of the higher pitch as the velocity value F _VEL of the two velocity values included in the performance information received in step S101 of FIG. 4 (step S206). In another embodiment, in step S206, the processor 210 selects the velocity value of the lower pitch of the two velocity values included in the performance information received in step S101 of FIG. The velocity value of the pitch associated with the key or the velocity value of the pitch associated with the key to be pressed next may be obtained as the velocity value F _VEL .

If there are not two musical tones corresponding to the key depression operation (step S203: NO), the musical tones corresponding to the key depression operation include three or more musical tones. The processor 210 determines whether or not the highest musical tone and the next highest musical tone among the pitches of the three or more depressed keys are separated by one octave or more (step S207).

If the pitches of the three or more keys that have been pressed are separated by one octave or more from the highest musical tone to the next highest musical tone (step S207: YES), the melody tone is played with one hand and the other hand. It is presumed that accompaniment chords are being played with the hands of In this case, processor 210 uses three or more velocity values included in the performance information received in step S101 of FIG. Among them, the velocity value of the highest pitch (in other words, the pitch of the melody sound played with one hand) is acquired as the velocity value FM _VEL , and the other two or more pitches (in other words, the pitch of the other The average value of the velocity values of the accompaniment chords played by hand) is obtained as the velocity value FA _VEL (step S208).

If the pitches of the three or more keys that have been pressed are not separated by one octave or more from the highest musical tone to the next highest musical tone (step S207: NO), accompaniment chords are being played with one hand. presumed to be In this case, the processor 210 obtains the average value of the three or more velocity values (in other words, the velocity value of the pitch of the accompaniment chord) included in the performance information received in step S101 of FIG. 4 as the velocity value FA _VEL . (step S209).

Thus, in steps S204 and S207, processor 210 determines whether the performance by the player is one-handed or two-handed. At steps S205, S206, S208 and S209, the processor 210 obtains the velocity value corresponding to the one-handed performance or the two-handed performance.

The processor 210 acquires the strength of the sound in the first key depression operation (step S210). Specifically, at step S210, processor 210 acquires one of the following velocity values (1a) to (5a) as the sound intensity of the first key depression operation.
(1a) Velocity value F _VEL acquired in step S202
(2a) Velocity values FR _VEL and FL _VEL obtained in step S205
(3a) Velocity value F _VEL acquired in step S206
(4a) Velocity values FM _VEL and FA _VEL obtained in step S208
(5a) Velocity value FA _VEL obtained in step S209

FIG. 6 is a subroutine showing the details of the second velocity value detection process in step S105 of FIG. In the second velocity value detection process, the input type of the current (second or subsequent) key depression operation is determined, and the sound intensity of the current (second or subsequent) key depression operation is determined according to the determined input type. is obtained.

The second velocity value detection process in step S105 is the same as the first velocity value detection process in step S102. Therefore, the detailed description of the second velocity value detection process will be omitted as appropriate.

As shown in FIG. 6, processor 210 determines whether or not the musical tone corresponding to the key depression operation is a single tone, based on the performance information received in step S104 of FIG. 4 (step S301).

If the musical tone corresponding to the key depression operation is a single tone (step S301: YES), the processor 210 determines the velocity value included in the performance information received in step S104 of FIG. sound intensity in key operation) is acquired as a velocity value _CVEL (step S302).

If the musical tone corresponding to the key depression operation is not a single tone (step S301: NO), the processor 210 determines whether two musical tones correspond to the key depression operation based on the performance information received in step S104 of FIG. is determined (step S303).

If there are two musical tones corresponding to the key depression operation (step S303: YES), the processor 210 determines whether or not the pitches of the two keys that have been depressed are separated by one octave or more (step S304).

If the pitches of the two pressed keys are separated by one octave or more (step S304: YES), the processor 210 detects the alignment of the sound grains in the performance of one hand and the pitch of the other hand. In order to detect the uniformity of sound grains in a performance, the velocity value of the higher pitch is selected from among the two velocity values (the velocity values of each of the two notes) included in the performance information received in step S104 of FIG. A velocity value CR _VEL is acquired, and a velocity value of a low pitch is acquired as a velocity value CL _VEL (step S305).

If the pitches of the two pressed keys are not separated by one octave or more (step S304: NO), the processor 210 selects, of the two velocity values included in the performance information received in step S104 of FIG. The velocity value of the high pitch is obtained as the velocity value _CVEL (step S306). In another embodiment, in step S306, the processor 210 selects the velocity value of the lower pitch of the two velocity values included in the performance information received in step S104 of FIG. The velocity value of the tone pitch associated with the key or the velocity value of the tone pitch associated with the key to be pressed next may be obtained as the velocity value _CVEL .

If there are not two musical tones corresponding to the key depression operation (step S303: NO), the musical tones corresponding to the key depression operation include three or more musical tones. The processor 210 determines whether or not the highest musical tone and the next highest musical tone among the pitches of the three or more depressed keys are separated by one octave or more (step S307).

If the pitches of the three or more keys that have been pressed are separated by one octave or more from the highest musical tone to the next highest musical tone (step S307: YES), the processor 210 determines the degree of uniformity of the melody tones. In order to detect the degree of uniformity of accompaniment chord grains, the highest pitch (in other words, one hand Acquire the velocity value of the melody note played with the other hand) as the velocity value CM _VEL , and average the velocity values of the other two or more pitches (in other words, the pitches of the accompaniment chords played with the other hand) A value is acquired as a velocity value CA _VEL (step S308).

If the pitches of the three or more keys that have been pressed are not separated by one octave or more from the highest musical tone to the next highest musical tone (step S307: NO), the processor 210 proceeds to step S104 in FIG. An average value of three or more velocity values (in other words, velocity values of pitches of accompaniment chords) included in the received performance information is obtained as a velocity value CA _VEL (step S309).

Thus, in steps S304 and S307, processor 210 determines whether the performance by the player is one-handed or two-handed. At steps S305, S306, S308 and S309, the processor 210 obtains velocity values corresponding to one-handed or two-handed performance.

The processor 210 acquires the strength of the sound in the current (second or later) key depression operation (step S310). Specifically, in step S310, processor 210 acquires one of the following velocity values (1b) to (5b) as the sound intensity of the current (second and subsequent) key depression operations.
(1b) Velocity value C _VEL acquired in step S302
(2b) Velocity values CR _VEL and CL _VEL acquired in step S305
(3b) Velocity value C _VEL obtained in step S306
(4b) Velocity values CM _VEL and CA _VEL obtained in step S308
(5b) Velocity value CA _VEL acquired in step S309

FIG. 7 is a subroutine showing details of the difference value acquisition process in step S106 of FIG. In the difference value acquisition process, the difference value between the velocity value detected by the first velocity value detection process of step S102 and the velocity value detected by the second velocity value detection process of step S105 is acquired. In more general terms, the difference value obtaining process obtains a difference value for a value of two sounds. That is, in step S106, the processor 210 operates as the difference value acquisition unit 210a that acquires a difference value regarding certain values of two sounds.

As shown in FIG. 7, the processor 210 calculates the sound intensity (that is, any velocity value of (1a) to (5a) above) in the initial key depression operation acquired in step S210 of FIG. is set as the value FV, and the strength of the sound in the current (second and subsequent) key depression operations obtained in step S310 of FIG. ) is set as the value CV (step S401).

Processor 210 calculates the difference between value FV and value CV (step S402). This difference value is the value FV minus the value CV. More specifically, processor 210 refers to the difference value calculation table shown in FIG. 8 to calculate the difference value in consideration of the input types of the first key depression operation and the current (second and subsequent) key depression operations. conduct. In the difference value calculation table shown in FIG. 8, the vertical axis is the value FV and the horizontal axis is the value CV. This difference value calculation table is held in the ROM 230, for example.

Several examples of the difference value calculation method using the difference value calculation table shown in FIG. 8 will be described.

For example, let us consider a case where both musical tones corresponding to the first and current (second and subsequent) key depression operations are single tones. In this case, as shown in FIG. 8, the difference value is calculated by the following equation (1).

formula (1)
Velocity value F _VEL - Velocity value C _VEL

For example, let us consider a case where the musical tones corresponding to the first key depression are two tones separated by one octave or more, and the musical tones corresponding to the current (second and subsequent) key depressions are a single tone. In this case, since two musical tones are replaced by a single tone, the musical tones corresponding to the velocity value FR _VEL and the musical tones corresponding to the velocity value FL _VEL are different in pitch (or range) from the musical tone corresponding to the velocity value C _VEL . A difference value between the closer one and the velocity value _CVEL is calculated. That is, as shown in FIG. 8, the difference value is calculated by the following equation (2) or (3).

formula (2)
Velocity value FR _VEL - Velocity value C _VEL
Formula (3)
Velocity value FL _VEL - Velocity value C _VEL

For example, let us consider a case where both musical tones corresponding to the first and current (second and subsequent) key depression operations are two tones separated by one octave or more. In this case, as shown in FIG. The difference value between the two sounds in the performance is calculated by the following equation (4), and the difference value between the two sounds in the performance of the other hand is calculated by the following equation (5).

Formula (4)
Velocity value FR _VEL - Velocity value CR _VEL
Formula (5)
Velocity value FL _VEL - Velocity value CL _VEL

For example, consider a case where musical tones corresponding to the first and current (second and subsequent) key depression operations are both combinations of accompaniment chords (two or more chords) and melody tones. In this case, in order to detect the alignment of melody tones and the alignment of accompaniment chords, as shown in FIG. and the difference value in the accompaniment chord played with the other hand is calculated by the following equation (7).

Formula (6)
Velocity value FM _VEL - Velocity value CM _VEL
Formula (7)
Velocity value FA _VEL - Velocity value CA _VEL

For example, the musical tone corresponding to the first key depression is a combination of an accompaniment chord (a chord of two or more notes) and a melody tone, and the musical tone corresponding to the current (second and later) key depression is only an accompaniment chord. Consider the case of In this case, while the musical tone corresponding to the first key depression operation (more specifically, the musical tone having the highest pitch among the musical tones corresponding to the first key depression operation (the musical tone having the velocity value FM _VEL )) is sounded, Stop calculating the difference value. As a result, during the performance of the melody sound, the display unit 260 does not display the animated moving image indicating how well the grains of the sound are aligned. This is intended to make the player concentrate on playing the melody sound. After the sounding of this tone is completed, the difference value between the melody tone corresponding to the first key depression and the accompaniment chord corresponding to the current key depression is calculated by the following equation (8), as shown in FIG. be.

Formula (8)
Velocity value FM _VEL - Velocity value CA _VEL

In the example of FIG. 8, the same applies when the musical tone corresponding to the first key depression operation is a single tone or two tones, and the musical tone corresponding to the current (second or later) key depression operation is only an accompaniment chord. , the calculation of the difference value is stopped during the sounding of the musical tone corresponding to the first key depression operation.

The processor 210 acquires the difference value calculated in step S402 as the difference value between the two sound intensities (step S403). In the case of one-handed performance, one difference value calculated in step S402 is obtained, and in the case of two-handed performance, two difference values calculated in step S402 are obtained.

FIG. 9 is a subroutine showing details of the animation moving image generation processing in step S107 of FIG. In this embodiment, the height of the ground on which the character moves is changed in the animation moving image according to how well the sound grains are aligned. By visually recognizing the height of the ground where the character moves, the performer can grasp in real time how well the grains of sound are aligned.

As shown in FIG. 9, the processor 210 sets the difference value acquired in step S403 of FIG. 8 as the difference value VEL (step S501). In the case of a two-handed performance, two difference values VEL corresponding to each hand are set.

In step S502, the processor 210 generates information corresponding to the difference value VEL (for example, information indicating the magnitude of the difference value between the first musical tone and the second musical tone, the difference between the first musical tone and the third musical tone). information indicating the magnitude of the value). Specifically, at step S502, processor 210 refers to the parameter table shown in FIG. example). In the case of two-handed performance, parameters are set according to respective difference values VEL.

In the example of FIG. 10, the parameters include initial character, animation information, and gradient. The initial character is an example of an image, and indicates a character to be displayed in the first frame of the animation moving image. Animation information is an example of information for moving an image on the screen, and indicates information on character movement. The gradient is an example of information for changing the image according to the difference value, and indicates the height of the ground along which the character moves. In addition, the gradient is information for tilting and displaying the image within the screen according to the difference value.

The parameter table shown in FIG. 10 is held in the ROM 230, for example. That is, the ROM 230, which is an example of a holding unit, holds a parameter, which is an example of information acquired by the information acquisition unit 210b, in association with each difference value VEL. In step S502, the processor 210 operating as the information acquisition unit 210b acquires information (parameters) associated with the difference value VEL from the ROM 230, which is a holding unit.

Note that the parameters (in other words, information) listed here are only examples. For example, the information for changing the image according to the difference value may include information for changing the color, size, number, etc. of the image, or information for switching to another image. may be included. Processor 210 may set other parameters exemplified above in addition to or in place of the parameters shown in FIG. 10 as parameters for generating an animation movie.

Processor 210 generates an animation video using the parameters set in step S502, and outputs the animation video to display unit 260 (step S503). In the case of a two-handed performance, animation videos corresponding to each hand (in other words, information indicating how well the sound grains are aligned in each hand) are generated using parameters set according to the respective difference values VEL. ) is generated and output to the display unit 260 . That is, in step S503, the processor 210 operates as the output unit 210c that outputs to the display unit 260, which is an example of the notification unit, based on the parameter, which is an example of the information acquired by the information acquisition unit 210b.

More specifically, the processor 210, which operates as the information acquisition unit 210b and the output unit 210c, acquires information (parameters) corresponding to one hand to be played and outputs the information to the notification unit (display 260), and if it is determined that the performance is performed with both hands, the information corresponding to each hand of the performance is acquired and output to the notification unit.

While the musical tone corresponding to the current (second or later) key depression operation is being produced (step S504: YES), the processor 210 continues to execute step S503 to generate and output animation moving images. As a result, the animation video is reproduced on the display unit 260 while the musical tones are produced.

For example, when the difference value VEL is zero, as shown in FIG. 10, character (1) is set as the initial character, information (1) (A) (B) is set as the animation information, and zero degrees is set as the gradient. is set.

In step S503, the processor 210 acquires character (1) from the initial characters stored in the ROM 230, for example.

Information (1) (A) (B) indicates that the character (1) is alternately and repeatedly moved between (A) and (B) frames. In step S503, the processor 210 acquires (A) and (B) frames for the character (1) from the frames stored in the ROM 230, for example. By alternately and repeatedly displaying the character (1) in frames (A) and (B) on the screen, an animation moving image in which the character (1) runs is reproduced.

A slope of zero degrees indicates that the ground level on which character (1) runs is the reference level. In step S503, the processor 210 draws the ground on which the character (1) runs at a reference height position in the animation moving image.

Thus, at step S503, the processor 210 generates an animated animation in which the character (1) runs on the ground located at the reference height _H1 when the difference value VEL is zero. An example of this animation movie is shown in FIGS. 11A and 11B. An animation moving image in which the frames shown in FIG. 11A and the frames shown in FIG. 11B are alternately repeated is generated and displayed on the display unit 260 .

Note that the examples of FIGS. 11A and 11B show animation videos displayed on the display unit 260 during one-handed performance. During a two-handed performance, the display unit 260 displays an animation video corresponding to each hand.

12A and 12B show an example of an animation video displayed on the display unit 260 when playing with both hands. In this embodiment, the character set in step S502 changes according to the difference value VEL, but for convenience sake, the same dog character (1) as in FIGS. .

Supplementally, the character set in step S502 may always be the same character (for example, dog character (1) shown in FIGS. 11A and 11B). Also, the character set in step S502 may be freely changed by the performer.

First, an animation movie corresponding to one hand will be described. For example, when the difference value VEL corresponding to one hand is +101 or more, character (6) is set as the initial character and information (6) (A) (B) is set as animation information, as shown in FIG. is set and +45 degrees is set as the slope. If the previous difference value VEL corresponding to one hand is less than or equal to +100, the processor 210 generates an animation video in which the character (6) runs uphill and causes the display unit 260 to display it ("One hand" in FIG. 12A). hands” (see image directly below).

The slope of this upward slope is the slope of the difference between the slope corresponding to the previous difference value VEL and the slope corresponding to the current difference value VEL. The top of this uphill is located at height _H2 associated with the slope corresponding to the current difference value VEL (that is, the slope of +45 degrees).

If the difference value VEL of +101 or more continues, the processor 210 generates an animation animation in which the character (6) runs on flat ground located at a height _H2 associated with a gradient of +45 degrees. As a result, an animation moving image in which the character (6) runs on the flat ground positioned at the height _H2 is displayed on the display unit 260 (see the image immediately below "one hand" in FIG. 12B).

Next, the animation movie corresponding to the other hand will be described. For example, if the difference value VEL corresponding to the other hand is -101 or less, as shown in FIG. 10, character (11) is set as the initial character, and information (11) (A) (B ) is set, and −45 degrees is set as the slope. If the previous difference value VEL corresponding to the other hand is -100 or more, the processor 210 generates an animation moving image in which the character (11) runs downhill and causes the display unit 260 to display it ("the other hand" in FIG. 12A). hands” (see the image directly below).

The gradient of this downward slope is also the gradient of the difference between the gradient corresponding to the previous difference value VEL and the gradient corresponding to the current difference value VEL. The ground after going down this downward slope is located at a height H ₃ associated with the gradient corresponding to the current difference value VEL (that is, the gradient of -45 degrees).

If the difference value VEL of -101 or more continues, the processor 210 generates an animation animation in which the character (11) runs on a flat ground located at a height _H3 associated with a gradient of -45 degrees. As a result, an animated animation in which the character (11) runs on a flat ground positioned at a height _H3 is displayed on the display unit 260 (see the image immediately below the "other hand" in FIG. 12B).

In this way, the processor 210 makes the character flat according to the difference value VEL indicating the difference in strength between the tone corresponding to the first key depression operation and the tone corresponding to the current (second and subsequent) key depression operations. Generate animation videos running on smooth ground, uphill or downhill.

By visually recognizing the animation video (for example, by visually recognizing the height of the ground on which the character is running or the slope of the slope), the player can determine the current (second and subsequent) key depressions for the musical sound corresponding to the first key depression operation. It is possible to easily grasp, in real time, how well the musical tones correspond to the operation, how well the sound grains are aligned when playing with one hand, how the sound grains are aligned when playing with both hands, and the like. . Also, the performer can see how the uniformity of the sound grains changes during the performance, for example, by visually recognizing an animation movie in which the character runs on a flat ground or climbs and descends a slope. can be easily grasped in real time.

Note that the animation video is not limited to that of the present embodiment. For example, a stick whose length changes according to the velocity of the note played by the user may be displayed. Alternatively, separate bars for the left hand and right hand may be displayed, and each bar may expand or contract according to the difference value VEL. Even with such an animation video, the performer can visually grasp how the particles of sound are aligned. In the case of this animation video, the parameters according to the difference value include, for example, a bar (an example of an image) and information for expanding and contracting the bar (an example of information for giving a change to the image according to the difference value). is set.

Therefore, the performer can efficiently practice how hard it is necessary to press five differently shaped fingers on one hand or on each of the left and right hands to align the grains of sound. can be done.

According to the present embodiment, it is determined to what extent the grains of sound are aligned with reference to the musical sound corresponding to the first key depression operation by the player. In other words, it is not determined to what extent the sound grains are aligned with reference to the model sound. Therefore, model sound data is unnecessary.

It should be noted that in another embodiment, instead of the musical tone corresponding to the first key depression operation, a model tone may be used as a reference to determine how well the tone grains are aligned. That is, in step S106, the processor 210 operating as the difference value acquiring unit 210a generates a model sound (predetermined model sound) and a musical sound corresponding to each key depression operation by the performer (musical sound corresponding to the user's operation). You may acquire the difference value with

Also, the reference sound is not limited to the musical sound corresponding to the player's first key depression operation. It may be determined to what degree the grains of sound are uniform based on a musical sound corresponding to a key depression operation at an arbitrary point of time, a musical sound corresponding to a key depression operation immediately before the current key depression operation, or the like.

In the present embodiment, the input type of each of the first and current (second and subsequent) key depression operations is determined, and the difference value between the two sounds is acquired in consideration of the input type. Since it supports a wide range of input types, it is possible to visually convey to the performer how well the grains of sound are aligned in various songs.

As described above, according to the present embodiment, an information processing device, an electronic musical instrument, a method, and a program are provided that allow a user to easily grasp whether the grains of sound are aligned.

In addition, the present invention is not limited to the above-described embodiments, and can be modified in various ways without departing from the gist of the present invention. Also, the functions executed in the above-described embodiments may be combined as appropriate as possible. Various steps are included in the above-described embodiments, and various inventions can be extracted by appropriately combining the disclosed multiple constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiments, if an effect can be obtained, a configuration in which these constituent elements are deleted can be extracted as an invention.

In the above embodiment, the electronic musical instrument 100 and the information processing device 200 are independent devices, but in another embodiment, the electronic musical instrument 100 may include the information processing device 200 . In other words, the electronic musical instrument 100 including the keyboard 120 as performance operators includes an information processing device 200 . In this case, the processor 110 executes the lesson program 232 to produce a first musical tone in response to the first operation on the performance operator and a second musical tone in response to the second operation on the performance operator. Acquire a difference value (for example, difference value VEL) related to a certain value, acquire information indicating the magnitude of the acquired difference value, and output to a notification unit (for example, the touch panel of the electronic musical instrument 100) based on the acquired information. . By visually recognizing the animated moving image displayed on the touch panel, the performer can grasp in real time how well the particles of sound are aligned during the performance.

In the above embodiment, the difference in velocity between the two sounds was exemplified as the difference value between the two sounds, but the present invention is not limited to this. For example, a configuration that acquires a pitch difference, a volume difference, or a timbre filter difference as a difference value between two sounds and outputs an animation video corresponding to the acquired difference value is also within the scope of the present invention.

For example, in an electronic stringed instrument or an electronic wind instrument, a pitch deviation or a volume deviation occurs for each playing operation. Therefore, the processor 210 acquires, for example, a difference value between the pitch (or volume) of the musical sound corresponding to the first performance operation and the pitch (or volume) of the musical sound according to the current (second and subsequent) performance operations. , an animation video corresponding to the obtained difference value (in other words, information for telling the performer how well the pitches (or volumes) of the two sounds are aligned) is generated and output to the display unit 260 . By visually recognizing the animation moving image displayed on the display unit 260, the player can, for example, determine how much the musical tone corresponding to the current (second and later) key pressing operation is compared to the musical tone corresponding to the first key pressing operation. Whether the pitch (or volume) is off can be grasped in real time.

For example, in an electronic musical instrument such as a synthesizer or an organ that produces sustained sounds, the sound is changed or vibrato is applied by operating a pedal or the like. Therefore, the processor 210 acquires, for example, a difference value between the tone color filter applied in the first performance operation and the tone color filter applied in the current (second and later) performance operation, and an animation corresponding to the acquired difference value is obtained. A moving image (in other words, information that tells the performer how well the timbre filters applied to the two sounds match) is generated and output to the display unit 260 . By visually recognizing the animation video displayed on the display unit 260, the player can, for example, apply musical tones corresponding to the current (second and subsequent) key depression operations to the musical tones corresponding to the first key depression operation. It is possible to grasp in real time how well the timbre filters obtained are aligned (in other words, how well the timbres are aligned).

The processor 210 may add an effect corresponding to the difference value VEL to the animation moving image generated in step S107 of FIG. As an example, when the difference value VEL is +101 or more or -101 or less, the character displayed in the animated moving image is emphasized. Specifically, the character is colored in a conspicuous color (for example, red) or blinks. In addition, when the difference value VEL falls within a certain range (for example, from -10 to +10), the grains of the sound are aligned or nearly aligned, so for example, the background of the character is gorgeously produced (for example, a video in which flowers bloom profusely). ) is displayed. When the difference value VEL is zero, further effects (for example, display of icons such as "GREAT!!" and "perfect!!" and reproduction of sound) may be added. By adding such effects, it is possible to convey to the performer in an easy-to-understand way how well the particles of sound are aligned.

In the above embodiment, as an example of the difference value between two tones, the difference value between the musical tone corresponding to the first key depression operation and the musical tone corresponding to the current (second and subsequent) key depression operations was given. The invention is not limited to this. The difference value between the two sounds may be a difference value between the sound at the first time point and the sound at the second time point included in one continuous sound.

An example of a single continuous sound is a long tone sound practiced on an electronic wind instrument. Long tones require the same sound to be played continuously. Therefore, the processor 210 obtains a difference value between the volume at a certain point in the first half and the volume at a certain point in the second half of the long tones (that is, the musical tones corresponding to the user's operation), and obtains the obtained difference. An animation moving image corresponding to the value (in other words, information for telling the performer whether or not the first half and the second half of the long tone have the same volume) is generated and output to the display unit 260 . By visually recognizing the animation moving image displayed on the display unit 260, the performer can grasp in real time, for example, whether or not a certain long tone is continuously sounded.

The invention described in the scope of claims at the time of filing of the present application will be additionally described below.
[Appendix 1]
get the difference value for a value of two notes,
Acquiring information indicating the size of the acquired difference value,
outputting to a notification unit based on the acquired information;
comprising a control unit that performs processing;
Information processing equipment.
[Appendix 2]
The two sounds are a first musical tone in response to a first operation by the user and a second musical tone in response to a second operation by the user.
The information processing device according to appendix 1.
[Appendix 3]
the first musical tone is a musical tone played by the user;
The second musical tone is a musical tone played by the user, and is a musical tone after the first musical tone on the time axis.
The information processing device according to appendix 2.
[Appendix 4]
the two sounds are the first musical sound and a third musical sound corresponding to the third operation of the user;
the third musical tone is a musical tone played by the user and is a musical tone after the second musical tone on the time axis;
When the third musical tone is produced, the control section acquires information indicating the magnitude of the difference value between the first musical tone and the third musical tone, and transmits the acquired information to the notification section. output to
The information processing device according to appendix 3.
[Appendix 5]
the first musical tone is the first musical tone played by the user;
The information processing apparatus according to appendix 3 or appendix 4.
[Appendix 6]
The two sounds are the sound at the first time point and the sound at the second time point among the musical tones corresponding to the user's operation,
The information processing device according to appendix 1.
[Appendix 7]
The two sounds are a predetermined model sound and a musical sound according to the user's operation,
The information processing device according to appendix 1.
[Appendix 8]
The control unit
determining whether the performance by the user is one-handed performance or two-handed performance;
when it is determined that the performance is performed with one hand, the information corresponding to one hand to be played is acquired and output to the notification unit;
If it is determined that both hands are played, the information corresponding to each hand to be played is acquired and output to the notification unit.
The information processing apparatus according to any one of appendices 1 to 7.
[Appendix 9]
the difference value for a value of the two notes indicates a difference in velocity, a difference in pitch, a difference in volume or a difference in timbre filters of the two notes;
The information processing apparatus according to any one of appendices 1 to 8.
[Appendix 10]
the sound is a single note, a two note note, a three or more note chord, or a combination of an accompaniment chord and a melody note,
The information processing apparatus according to any one of appendices 1 to 9.
[Appendix 11]
A holding unit that holds the information in association with each difference value,
the control unit acquires information associated with the acquired difference value from the holding unit;
The information processing apparatus according to any one of appendices 1 to 10.
[Appendix 12]
The information includes an image and information for giving a change to the image according to the difference value;
The information processing apparatus according to any one of appendices 1 to 11.
[Appendix 13]
The information for giving a change to the image according to the difference value is information for displaying the image at an angle within the screen as the difference value increases.
13. The information processing device according to appendix 12.
[Appendix 14]
the information further includes information for moving the image on the screen;
The information processing apparatus according to appendix 12 or appendix 13.
[Appendix 15]
The notification unit is provided,
The notification unit outputs content according to the difference value based on the output from the at least one processor.
The information processing apparatus according to any one of appendices 1 to 14.
[Appendix 16]
The notification unit includes at least one of an audio output unit and a display unit,
The information processing apparatus according to any one of appendices 1 to 15.
[Appendix 17]
the information processing device according to any one of appendices 1 to 16;
and a performance operator,
The control unit
obtaining a difference value of a certain value between a first musical tone corresponding to a first operation on the performance operator and a second musical tone corresponding to a second operation on the performance operator;
Acquiring information indicating the size of the acquired difference value,
output to the notification unit based on the acquired information;
electronic musical instrument.
[Appendix 18]
to the computer,
get a difference value for a value of two notes,
acquire information indicating the size of the acquired difference value;
cause the notification unit to output based on the acquired information;
Method.
[Appendix 19]
to the computer,
get a difference value for a value of two notes,
acquire information indicating the size of the acquired difference value;
cause the notification unit to output based on the acquired information;
program.

1: Electronic musical instrument system 100: Electronic musical instrument 110: Processor 120: Keyboard 130: Key scanner 140: Operation unit 150: Speaker 160: Communication unit 170: Music stand 200: Information processing device 210: Processor 210a: Difference value acquisition unit 210b: Information Acquisition Unit 210c: Output Unit 220: RAM
230: ROM
232: Lesson program 240: Operation unit 250: Communication unit 260: Display unit 270: Audio reproduction unit

An information processing apparatus according to an embodiment of the present invention includes two sounds, a first musical sound corresponding to a user's musical performance operation and a musical sound corresponding to the user's musical performance operation, which are arranged on the time axis. obtaining a difference value including any one of velocity difference, pitch difference, volume difference, and timbre filter difference between a second musical tone, which is a musical tone after the first musical tone, and the obtained difference value; and outputting information to the notification unit based on the obtained information.

Claims (19)

get the difference value for a value of two notes,
Acquiring information indicating the size of the acquired difference value,
outputting to a notification unit based on the acquired information;
comprising a control unit that performs processing;
Information processing equipment. The two sounds are a first musical tone in response to a first operation by the user and a second musical tone in response to a second operation by the user.
The information processing device according to claim 1 . the first musical tone is a musical tone played by the user;
The second musical tone is a musical tone played by the user, and is a musical tone after the first musical tone on the time axis.
The information processing apparatus according to claim 2. the two sounds are the first musical sound and a third musical sound corresponding to the third operation of the user;
the third musical tone is a musical tone played by the user and is a musical tone after the second musical tone on the time axis;
When the third musical tone is produced, the control section acquires information indicating the magnitude of the difference value between the first musical tone and the third musical tone, and transmits the acquired information to the notification section. output to
The information processing apparatus according to claim 3. the first musical tone is the first musical tone played by the user;
The information processing apparatus according to claim 3 or 4. The two sounds are the sound at the first time point and the sound at the second time point among the musical tones corresponding to the user's operation,
The information processing device according to claim 1 . The two sounds are a predetermined model sound and a musical sound according to the user's operation,
The information processing device according to claim 1 . The control unit
determining whether the performance by the user is one-handed performance or two-handed performance;
when it is determined that the performance is performed with one hand, the information corresponding to one hand to be played is acquired and output to the notification unit;
If it is determined that both hands are played, the information corresponding to each hand to be played is acquired and output to the notification unit.
The information processing apparatus according to any one of claims 1 to 7. the difference value for a value of the two notes indicates a difference in velocity, a difference in pitch, a difference in volume or a difference in timbre filters of the two notes;
The information processing apparatus according to any one of claims 1 to 8. the sound is a single note, a two note note, a three or more note chord, or a combination of an accompaniment chord and a melody note,
The information processing apparatus according to any one of claims 1 to 9. A holding unit that holds the information in association with each difference value,
the control unit acquires information associated with the acquired difference value from the holding unit;
The information processing apparatus according to any one of claims 1 to 10. The information includes an image and information for giving a change to the image according to the difference value;
The information processing apparatus according to any one of claims 1 to 11. The information for giving a change to the image according to the difference value is information for tilting and displaying the image within the screen according to the difference value.
The information processing apparatus according to claim 12. the information further includes information for moving the image on the screen;
The information processing apparatus according to claim 12 or 13. The notification unit is provided,
The notification unit outputs content according to the difference value based on the output from the at least one processor.
The information processing apparatus according to any one of claims 1 to 14. The notification unit includes at least one of an audio output unit and a display unit,
The information processing apparatus according to any one of claims 1 to 15. an information processing apparatus according to any one of claims 1 to 16;
and a performance operator,
The control unit
obtaining a difference value of a certain value between a first musical tone corresponding to a first operation on the performance operator and a second musical tone corresponding to a second operation on the performance operator;
Acquiring information indicating the size of the acquired difference value,
output to the notification unit based on the acquired information;
electronic musical instrument. to the computer,
get a difference value for a value of two notes,
acquire information indicating the size of the acquired difference value;
cause the notification unit to output based on the acquired information;
Method. to the computer,
get a difference value for a value of two notes,
acquire information indicating the size of the acquired difference value;
cause the notification unit to output based on the acquired information;
program.

Images