Electronic percussion instrument, control device for electronic percussion instrument, and control method thereof

Abstract

An electronic percussion instrument, a control device for the electronic percussion instrument, and a control method thereof are capable of localizing a sound image in a manner that a sound is heard from a place where a percussion is struck. The control device for the electronic percussion instrument inputs a musical sound signal corresponding to a percussion on a percussion surface to a first amplifier for amplifying a signal connected to a first speaker disposed on a back side or around a first percussion surface, and inputs the musical sound signal to a second amplifier for amplifying a signal connected to a second speaker disposed on the back side or around the first percussion surface at a timing later than a timing of input to the first amplifier.

Description

TECHNICAL FIELD

[0001] The present application relates to an electronic percussion instrument, a control device for an electronic percussion instrument, and a control method therefor. BACKGROUND

[0002] Conventionally, there is an electronic drum device including a speaker. (For example, refer to Patent Document 1)

[0003] It is desired to localize the sound image in a manner that the sound is emitted from the struck striking surface. However, in the related art, this aspect has not been considered.

[0004] PRIOR ART DOCUMENTS

[0005] PATENT DOCUMENTS

[0006] Patent Document 1: Japanese Patent Laid-Open No. 9-297576 SUMMARY

[0007] An object of the present application is to provide an electronic percussion instrument, a control device for an electronic percussion instrument, and a control method, which localize the sound image in a manner that the sound is heard from the place where the percussion is struck.

[0008] TECHNICAL MEANS FOR SOLVING THE PROBLEM

[0009] One of the embodiments of the present application is an electronic percussion instrument including:

[0010] a first striking surface;

[0011] a first speaker disposed on the back side or the periphery of the first striking surface;

[0012] a second speaker disposed on the back side or the periphery of the first striking surface;

[0013] a first generation section that generates a first musical tone signal corresponding to the percussion of the first striking surface;

[0014] a first amplifier that amplifies the input first musical tone signal and is connected to the first speaker;

[0015] a second amplifier that amplifies the input first musical tone signal and is connected to the second speaker; and

[0016] a first delay circuit that imparts a delay to the first musical tone signal input to the second amplifier so that the first musical tone signal is input to the second amplifier at a timing later than the timing of input to the first amplifier.

[0017] Further, one of the embodiments of the present application is a control device for an electronic percussion instrument, which is a control device for an electronic percussion instrument including a first striking surface, and includes:

[0018] a first generation section that generates a first sound signal corresponding to a strike of the first striking surface; and

[0019] a first delay circuit that imparts a delay to the input first sound signal,

[0020] inputs the first sound signal to a first amplifier that amplifies a signal connected to a first speaker disposed on a back side or around the first striking surface, and inputs the first sound signal to a second amplifier that amplifies a signal connected to a second speaker disposed on a back side or around the first striking surface, via the first delay circuit, at a timing later than a timing of input to the first amplifier.

[0021] In addition, one of the embodiments of the present application is a control method of an electronic percussion instrument, in which

[0022] by a control device of an electronic percussion instrument including a first striking surface:

[0023] a first sound signal corresponding to a strike of the first striking surface is generated; and

[0024] the first sound signal is input to a first amplifier that amplifies a signal connected to a first speaker disposed on a back side or around the first striking surface, and the first sound signal is input to a second amplifier that amplifies a signal connected to a second speaker disposed on a back side or around the first striking surface, at a timing later than a timing of input to the first amplifier.

[0025] In addition, one of the embodiments of the present application is an electronic percussion instrument including:

[0026] a striking surface;

[0027] a first speaker and a second speaker that respectively emit a sound based on a sound signal corresponding to a strike of the striking surface;

[0028] a delay circuit that imparts a delay time to the sound signal connected to the second speaker, so that the sound signal is delayed with respect to a timing of connection of the second speaker, compared to a timing of connection of the sound signal to the first speaker; and

[0029] a control device that performs setting of the delay time, which is used to set a positioning of a sound image of the sound emitted from the first speaker and the second speaker. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 (A) and (B) of FIG. 1 are diagrams showing the structure of the electronic percussion instrument of the embodiment. Figure 1

[0031] Figure 2 (A) and (B) of FIG. 2 are diagrams showing the circuit structure of the electronic percussion instrument.

[0032] Figure 3 (A) and (B) of FIG. 3 are diagrams showing the structure of the sound image positioning.

[0033] Figure 4 (A) and (B) of FIG. 4 are diagrams showing the structure of the sound image positioning. Figure 4

[0034] Figure 5 (A) and (B) of FIG. 5 are diagrams showing the experimental results of the first method.

[0035] Figure 6 (A) and (B) of FIG. 6 are diagrams showing the experimental results of the first method. Figure 6

[0036] Figure 7 (A) and (B) of FIG. 7 are diagrams showing the experimental results of the second method.

[0037] Figure 8

[0038] Figure 9

[0039] [Explanation of Reference Numerals]

[0040] 1: Electronic percussion instrument

[0041] 11: CPU

[0042] 12: RAM

[0043] 13: ROM

[0044] 14: Operating member

[0045] 15: DSP

[0046] 19a, 19b: Power amplifier

[0047] 20a, 20b: Speaker

[0048] 154a, 154b: Delay circuit DETAILED DESCRIPTION

[0049] The electronic percussion instrument of the embodiment includes the following.

[0050] (1) First striking surface

[0051] ​​​​​(2) a first speaker disposed on the back side or around the first striking surface

[0052] (3) a second speaker disposed on the back side or around the first striking surface

[0053] (4) a first generation unit that generates a first sound signal corresponding to a strike on the first striking surface

[0054] (5) a first amplifier that amplifies the input first sound signal and is connected to the first speaker

[0055] (6) a second amplifier that amplifies the input first sound signal and is connected to the second speaker

[0056] (7) a first delay circuit that gives a delay to the first sound signal input to the second amplifier so that the first sound signal is input to the second amplifier at a timing later than the timing input to the first amplifier

[0057] According to the electronic percussion instrument, an auditory sensation of a sound being emitted from a place where a strike is made can be obtained. The electronic percussion instrument of the embodiment can adopt a structure further including a second striking surface disposed side by side with the first striking surface, a second speaker disposed on the back side or around the second striking surface, a second generation unit that generates a second sound signal corresponding to a strike on the second striking surface, and a second delay circuit that gives a delay to the second sound signal input to the first amplifier so that the second sound signal is input to the first amplifier at a timing later than the timing input to the second amplifier.

[0058] In the electronic percussion instrument of the embodiment, each of the first speaker and the second speaker can adopt a structure that emits a sound based on each of the first sound signal or the first sound signal and the second sound signal at the same volume regardless of a position of a strike on the first striking surface and the second striking surface. In this case, an auditory sensation that a sound sounds large can be obtained.

[0059] In the electronic percussion instrument of the embodiment, the first striking surface and the second striking surface preferably adopt a structure disposed side by side in the left-right direction. However, an arrangement direction of the first striking surface and the second striking surface is not limited to the left-right direction. The first striking surface and the second striking surface are, for example, disposed horizontally at the same height, but can be inclined at the same angle or different angles. In addition, there can be a case where the first striking surface and the second striking surface are disposed at different heights.

[0060] Hereinafter, embodiments of an electronic percussion instrument, a control device of an electronic percussion instrument, and a control method will be described with reference to the drawings. The structure of the embodiments is exemplified and is not limited to the structure of the embodiments. Figure 1 (A) of FIG. 1 shows a plan view of an electronic percussion instrument 1 of the embodiment, Figure 1(B) schematically shows the right side surface of the electronic percussion instrument 1.

[0061] The electronic percussion instrument 1 is an electronic musical instrument having a striking surface (pad) that vibrates by being struck with a hand or a stick. The percussion instrument is a bass drum, a snare drum, a drum, a drum, a box drum, or the like. In the present embodiment, the electronic percussion instrument 1 has a structure in which a frame 2 disposed on the left side and a frame 3 disposed on the right side are connected by a connecting portion 4. Each of the frame 2 and the frame 3 is formed in a planar circular shape, and a circular striking surface is formed on the upper surface thereof by tensioning an elastic member. Figure 1

[0062] The frame 2 on the left side has a striking surface 5a, and the frame 3 on the right side has a striking surface 5b, and the striking surfaces 5a and 5b are disposed in the left-right direction with respect to the player (user) in a manner that is left-right symmetrical with respect to the player.

[0063] The inside of each of the frame 2 and the frame 3 is hollow. A piezoelectric sensor (also referred to as a piezoelectric sensor or a piezoelectric element) 16a that converts vibration of the striking surface 5a into an electric signal and a speaker 20a are fixedly disposed in the inside of the frame 2 (the back side of the striking surface 5a). Similarly, a piezoelectric sensor 16b that converts vibration of the striking surface 5b into an electric signal and a speaker 20b are disposed in the inside of the frame 3 (the back side of the striking surface 5b). The speakers 20a and 20b can be disposed around each of the striking surfaces 5a and 5b, but by being disposed on the back side of the striking surface in the frame, the electronic percussion instrument 1 can be reduced in size, and the sound can be effectively heard even if a small speaker is used. In the present embodiment, as an example, each of the striking surfaces 5a and 5b is formed of a mesh-like raw material, and the sound emitted from the speakers 20a and 20b easily passes through. In the present embodiment, an electronic percussion instrument having two striking surfaces is described, but the electronic musical instrument can be an electronic percussion instrument having one striking surface and first and second speakers disposed around the striking surface. At least one of the first and second speakers can be on the back side of the striking surface.

[0064] Figure 2 A circuit structure example of the electronic percussion instrument 1 is shown. In the present embodiment, the electronic percussion instrument 1 has a structure in which a frame 2 disposed on the left side and a frame 3 disposed on the right side are connected by a connecting portion 4. Each of the frame 2 and the frame 3 is formed in a planar circular shape, and a circular striking surface is formed on the upper surface thereof by tensioning an elastic member. Figure 2 ​In the electronic percussion instrument 1, a Central Processing Unit (CPU) 11 that controls the entire operation is provided. The CPU 11 is connected to a Random Access Memory (RAM) 12, a Read Only Memory (ROM) 13, an operation member 14, and a Digital Signal Processor (DSP) 15 via a bus B. Among these, the combination of the CPU 11, the RAM 12, the ROM 13, and the DSP 15 functions as a "control device (control circuit) of the electronic percussion instrument". However, the processing by the CPU 11 or the DSP 15 can also be performed by an integrated circuit such as an Application Specific Integrated Circuit (ASIC) or a Field Programmable Gate Array (FPGA).

[0065] The RAM 12 functions as a work area of the CPU 11, a storage area of a program, or a storage area of data. The ROM 13 functions as a storage area of a program or a storage area of data. The RAM 12 and the ROM 13 are examples of storage devices (storage media). The operation member 14 is a key, a button, a knob, a switch, or the like for inputting or setting various information such as setting information of the electronic percussion instrument 1. Further, a sensor that detects a predetermined physical quantity can also be included.

[0066] As described above, the electronic percussion instrument 1 includes, as a performance operation member, the left-side striking surface 5a and a piezoelectric sensor 16a that detects the vibration of the striking surface 5a. An electric signal representing the vibration of the striking surface 5a detected by the piezoelectric sensor 16a is converted into a digital signal by an analog to digital (A / D) converter 17a and input to the DSP 15. In addition, the electronic percussion instrument 1 includes, as a performance operation member, the right-side striking surface 5b and a piezoelectric sensor 16b that detects the vibration of the striking surface 5b. An electric signal representing the vibration of the striking surface 5b detected by the piezoelectric sensor 16b is converted into a digital signal by an A / D converter 17b and input to the DSP 15.

[0067] As Figure 3As shown, the DSP 15 performs trigger detection 151a that detects a trigger (a hit of the hitting surface 5a) from a digital signal input from the A / D converter 17a, and Pulse Code Modulation (PCM) waveform reproduction 152a that reproduces a PCM waveform (a musical sound signal) corresponding to the digital signal. That is, in the PCM waveform reproduction 152a, the DSP 15 performs a process of reading out musical sound information corresponding to a digital signal waveform from the ROM 13 and writing into a waveform memory, and reproducing using a sound source. In addition, the DSP 15 performs panning 153a that acquires a volume balance of the speaker 20a and the speaker 20b. The musical sound signal that has passed through the panning 153a is input to a digital to analog (D / A) converter 18a to be converted into an analog signal, amplified by a power amplifier (PW amplifier) 19a, and a musical sound corresponding to the musical sound signal is emitted from the speaker 20a connected to the PW amplifier 19a.

[0068] In addition, the DSP 15 performs the same trigger detection 151b, PCM waveform reproduction 152b, and panning 153b as the trigger detection 151a, the PCM waveform reproduction 152a, and the panning 153a with respect to a digital signal input from the A / D converter 17b. The musical sound signal that has passed through the panning 153b is input to the D / A converter 18b to be converted into an analog signal, the signal is amplified by the PW amplifier 19b, and a musical sound corresponding to the musical sound signal is emitted from the speaker 20b connected to the PW amplifier 19b.

[0069] In addition, the DSP 15 includes a delay circuit 154a that imparts a delay to the musical sound signal input from the panning 153a and inputs to the D / A converter 18b, and a delay circuit 154b that imparts a delay to the musical sound signal input from the panning 153b and inputs to the D / A converter 18a. The delay circuit 154a imparts a delay to the musical sound signal input to the PW amplifier 19b so that the musical sound signal output from the panning 153a is input to the PW amplifier 19b at a timing later than a timing of input to the PW amplifier 19a. In addition, the delay circuit 154b imparts a delay to the musical sound signal input to the PW amplifier 19a so that the musical sound signal output from the panning 153b is input to the PW amplifier 19a at a timing later than a timing of input to the PW amplifier 19b.

[0070] The settings of the panning 153a and the panning 153b and the delay times of the delay circuit 154a and the delay circuit 154b can be performed by the CPU 11 by a user operating the operation member 14. Further, in the present embodiment, as the settings of the panning 153a and the panning 153b, a setting is implemented that becomes the same volume distribution in the left and right.

[0071] The striking surface 5a is an example of a "first striking surface", and the striking surface 5b is an example of a "second striking surface". In addition, the speaker 20a is an example of a "first speaker", and the speaker 20b is an example of a "second speaker". The DSP 15 (PCM waveform reproduction) is an example of a "first generation unit" and a "second generation unit", the tone signal obtained by the PCM waveform reproduction 152a is an example of a "first tone signal", and the tone signal obtained by the PCM waveform reproduction 152b is an example of a "second tone signal". In addition, the PW amplifier 19a is an example of a "first amplifier", and the PW amplifier 19b is an example of a "second amplifier". Furthermore, the delay circuit 154a is an example of a "first delay circuit", and the delay circuit 154b is an example of a "second delay circuit".

[0072] According to the above-described structure, in the case where the striking surface 5a on the left is struck, the corresponding tone is emitted from the speaker 20a on the left, and the same tone is emitted from the speaker 20b on the right with a delay from the timing at which the tone is emitted. Thereby, the sound image of the tone is positioned on the left (the striking surface 5a), and the hearing of the sound emitted from the striking surface 5a can be obtained. In the case where the striking surface 5b on the right is struck, the corresponding tone is emitted from the speaker 20b on the right, and the same tone is emitted from the speaker 20a on the left with a delay from the timing at which the tone is emitted. Thereby, the sound image of the tone is positioned on the right, and the hearing of the sound emitted from the striking surface 5b can be obtained. In the above-described embodiment, in the amplifier control in the PCM waveform reproduction of the DSP 15, the control is performed in such a manner that the volume becomes the same on the left and the right. Thereby, the tone is emitted from the speaker 20a and the speaker 20b with the same amount of volume. Thereby, compared with the case where a difference is provided in the volume on the left and the right for the positioning, a large sound can be heard.

[0073] Figure 4 (A) of FIG. 8 indicates experimental conditions for investigating the relationship between the sense of localization and the delay time. The speaker 20a and the speaker 20b were arranged in the left-right direction in such a manner that the distance between the centers thereof becomes 30 mm. On a straight line 70 in which the speaker 20a and the speaker 20b are left-right symmetrical, a microphone 80 (A) which assumes the ear of a listener was arranged. Figure 4 (B) of FIG. 8 indicates the experimental conditions. The microphone was arranged at a position 350 mm forward from the centers of the speaker 20a and the speaker 20b, and 40 mm in height. Figure 4

[0074] Figure 5 Table 1 is a table indicating the experimental results of the first method. Figure 6 (A) and (B) of FIG. 10 are graphs which explain the first method. As the first method (comparative example), the tone signal obtained by the PCM waveform reproduction 152a was used. Figure 6 (B) of FIG. 10 is a graph which explains the first method. As the first method (comparative example), the tone signal obtained by the PCM waveform reproduction 152a was used. Figure 2 ​The structure of the delay circuit 154a and the delay circuit 154b is removed from the illustrated structure. That is, a structure in which the sound signals corresponding to the strikes of each of the striking surfaces 5a and 5b are output from both the speaker 20a and the speaker 20b without providing a delay to the signal transmission to the opposite side is adopted.

[0075] The left-right direction is divided into the center (CTR), the regions L1 to L15 in the left-right direction of the striking surface 5a, and the regions R1 to R15 in the left-right direction of the striking surface 5b, and the output levels (volumes) of the left and right sounds are output differently (A) when each of the regions L1 to L15 and the regions R1 to R15 is struck. Figure 5 , Figure 6 In this case, it is observed that the auditory volume is largest in the center and smaller as it is farther away (B). Figure 6

[0076] Figure 7 is a table showing the experimental results of the second method, Figure 8 and Figure 9 is a graph explaining the second method. In the second method, the structure illustrated in Figure 2 is used, that is, the structure of the delay circuit 154a and the delay circuit 154b is used. As in the first method, it is divided into the center (CTR), the regions L1 to L15 of the striking surface 5a, and the regions R1 to R15 of the striking surface 5b. However, in the second method, the output levels (volumes) of the sounds are fixed to the same level (A). In addition, the adjustment is made in such a manner that the delay time is longer as it is farther away from the center (B). As for the auditory volume, as shown in (B), it is known that the tendency that the center is the largest and decreases as it is farther away from the center is the same as that of the first method, but the auditory volume is higher as a whole compared to that of the first method (B), and thus the volume can be increased as a whole. Figure 8 Figure 9 Figure 9 Figure 6 As described above, according to the second method, the relationship between the sense of localization and the delay time can be said as follows.

[0077] • When the delay time is 0 ms, it feels as if it is ringing from the center (CTR) between the speakers.

[0078] • If the delay time is extended, until a certain delay time, the sense of localization position is moved.

[0079]

[0080] ​​​​​• The distance between the speakers was fixed, the positioning was confirmed using the ears, and the maximum delay time at which the Haas effect was obtained was measured. The Haas effect is an auditory psychological phenomenon in which the sound image position is perceived in the direction of the signal that arrives at the ear first. In the results of the second method, at the maximum delay time (0.68 ms), a sense of positioning from the actual speaker position was obtained. Furthermore, even if a delay time above the maximum delay time was set, a sense of positioning beyond the speaker position did not occur.

[0081] As described above, in the electronic percussion instrument 1, the volume is made the same, and on the other hand, in the signal transmission to the left and right speakers, by imparting a delay to the signal to the speaker on the side opposite to the striking surface, the sound image can be positioned on the side of the struck striking surface, and on the other hand, the volume can be increased as a whole. Thereby, the musical sound can be suitably listened to. In addition, the electronic percussion instrument of the embodiment can change (adjust) the positioning position of the sound image of the sound emitted from the two speakers by changing the delay time set by the CPU 11 to the delay circuit. The structure shown in the embodiment can be appropriately combined within the range not departing from the object.

[0082] In addition, an embodiment of the present application can also be a storage device (storage medium) in which a program is recorded, which can be read by a computer and causes the computer to execute the processing performed by the electronic percussion instrument.

Claims

1. An electronic percussion instrument, characterized by, including: a first frame having a first striking surface; a second frame having a second striking surface; a first speaker disposed in the first frame and located at the back of the first striking surface; a second speaker disposed in the second frame and located at the back of the second striking surface and disposed side by side with the first speaker; a first generation section that generates a first tone signal corresponding to a strike on the first striking surface; a second generation section that generates a second tone signal corresponding to a strike on the second striking surface; a first amplifier that amplifies the input first tone signal and is connected to the first speaker; a second amplifier that amplifies the input first tone signal and is connected to the second speaker; a first delay circuit that imparts a delay to the first tone signal input to the second amplifier so that the first tone signal is input to the second amplifier at a timing later than the timing of input to the first amplifier; and a second delay circuit that imparts a delay to the second tone signal input to the first amplifier so that the second tone signal is input to the first amplifier at a timing later than the timing of input to the second amplifier, wherein, in the case of striking the first striking surface, a first tone corresponding to the first tone signal is emitted from the first speaker, and the same first tone is emitted from the second speaker with a delay from the timing at which the first speaker emits the first tone, so that the sound image of the first tone is positioned at the first striking surface, in the case of striking the second striking surface, a second tone corresponding to the second tone signal is emitted from the second speaker, and the same second tone is emitted from the first speaker with a delay from the timing at which the second speaker emits the tone, so that the sound image of the second tone is positioned at the second striking surface.

2. The electronic percussion instrument according to claim 1, wherein the second striking surface is disposed side by side with the first striking surface, and the second speaker is disposed at the back of or around the second striking surface.

3. The electronic percussion instrument according to claim 1, wherein each of the first speaker and the second speaker emits the first tone based on the first tone signal at the same volume.

4. The electronic percussion instrument according to claim 2, wherein each of the first speaker and the second speaker emits the tone based on each of the first tone signal and the second tone signal at the same volume.

5. The electronic percussion instrument according to claim 2 or 4, wherein the first striking surface and the second striking surface are disposed side by side to the left and right. including:

6. A control device for an electronic percussion instrument, characterized by a first striking surface disposed in a first frame; a second striking surface disposed in a second frame; a first generation section that generates a first tone signal corresponding to a strike on the first striking surface; a second generation section that generates a second tone signal corresponding to a strike on the second striking surface; a first delay circuit that imparts a delay to the input first tone signal; and a second delay circuit that imparts a delay to the input second tone signal. ​ ​ ​ The first sound signal is input to the first amplifier and the second sound signal is input to the second amplifier via the second delay circuit at a timing later than that of input to the second amplifier, wherein the first amplifier amplifies the input first sound signal and is connected to the first speaker disposed in the first housing and located on the back side of the first striking surface, and the second amplifier amplifies the input first sound signal and is connected to the second speaker, The first sound signal is input to the first amplifier and the second sound signal is input to the second amplifier via the second delay circuit at a timing later than that of input to the second amplifier, wherein the first amplifier amplifies the input first sound signal and is connected to the first speaker disposed in the first housing and located on the back side of the first striking surface, and the second amplifier amplifies the input first sound signal and is connected to the second speaker, wherein, in the case of striking the first striking surface, a first sound corresponding to the first sound signal is emitted from the first speaker and the same first sound is emitted from the second speaker with a delay from the timing at which the first speaker emits the sound, so that the sound image of the first sound is positioned at the first striking surface, in the case of striking the second striking surface, a second sound corresponding to the second sound signal is emitted from the second speaker and the same second sound is emitted from the first speaker with a delay from the timing at which the second speaker emits the second sound, so that the sound image of the second sound is positioned at the second striking surface.

7. The control device of the electronic percussion instrument according to claim 6, wherein the second striking surface is disposed side by side with the first striking surface and the second speaker is disposed on the back side or around the second striking surface.

8. The control device of the electronic percussion instrument according to claim 6, wherein each of the first speaker and the second speaker emits the first sound based on the first sound signal at the same volume.

9. A control method of an electronic percussion instrument, wherein by a control device of an electronic percussion instrument including a first striking surface and a second striking surface, the electronic percussion instrument including a first housing having the first striking surface and a second housing having the second striking surface, the first speaker being disposed in the first housing and the second speaker being disposed in the second housing: in the case of striking the first striking surface, a first sound signal corresponding to the striking of the first striking surface is generated; and the first sound signal is input to the first amplifier and the first sound signal is input to the second amplifier at a timing later than that of input to the first amplifier, wherein the first amplifier amplifies the input first sound signal and is connected to the first speaker located on the back side of the first striking surface, and the second amplifier amplifies the input first sound signal and is connected to the second speaker, the second speaker being disposed side by side with the first speaker. In a case where the second striking surface is struck, a second sound signal corresponding to a strike of the second striking surface is generated, and the second sound signal is input to the second amplifier and the first amplifier at a timing later than a timing of input to the second amplifier, and the second amplifier amplifies the input first sound signal, wherein, in a case where the first striking surface is struck, the first sound is emitted from the first speaker, and the same first sound is emitted from the second speaker with a delay from a timing at which the first sound is emitted from the first speaker, so that a sound image of the first sound is positioned at the first striking surface, in a case where the second striking surface is struck, the second sound is emitted from the second speaker, and the same second sound is emitted from the first speaker with a delay from a timing at which the second sound is emitted from the second speaker, so that a sound image of the second sound is positioned at the second striking surface.

10. An electronic percussion instrument, characterized by including: a first frame body having a first striking surface; a second frame body having a second striking surface; a first speaker that emits a first sound based on a first sound signal corresponding to a strike of the first striking surface, the first speaker being disposed in the first frame body and positioned at a back side of the striking surface; a second speaker that emits a second sound based on a second sound signal corresponding to a strike of the second striking surface, the second speaker being disposed in the second frame body, positioned at a back side of the second striking surface, and disposed side by side with the first speaker; a first delay circuit that imparts a delay time to the second sound signal connected to the second speaker, so that the second sound signal is delayed from a timing of connection of the second sound signal to the second speaker, relative to a timing of connection of the second sound signal to the first speaker; a second delay circuit that imparts a delay time to the first sound signal connected to the first speaker, so that the first sound signal is delayed from a timing of connection of the first sound signal to the first speaker, relative to a timing of connection of the first sound signal to the second speaker; and a control device that performs setting of the delay time for setting a position of a sound image of a sound emitted from the first speaker and the second speaker wherein, in a case where the first striking surface is struck, the first sound is emitted from the first speaker, and the same first sound is emitted from the second speaker with a delay from a timing at which the first sound is emitted from the first speaker, so that a sound image of the first sound is positioned at the first striking surface, in a case where the second striking surface is struck, the second sound is emitted from the second speaker, and the same second sound is emitted from the first speaker with a delay from a timing at which the second sound is emitted from the second speaker, so that a sound image of the second sound is positioned at the second striking surface. ​

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