Sound processing system and sound processing method for the sound processing system

Abstract

To provide users with rich effect sounds that cannot be achieved by electronic instrument effect processing.SOLUTION: A sound processing system 1 comprises a digital piano 10 and a receiver 11 connected to the digital piano. The digital piano includes: a sound signal generation unit that generates a sound signal in response to a user's performance; a first sound emission unit that emits a first performance sound component based on the sound signal to which first effect processing is applied; and a first sound signal output unit that outputs the sound signal externally. The receiver includes: a first sound signal receiving unit that accepts sound signals output from the first sound signal output unit; a second signal processing unit that applies second effect processing to sound signals accepted by the first sound signal receiving unit and removes direct sound components; and a second sound emission unit that emits a second performance sound component based on the sound signal obtained by applying the second effect processing by the second signal processing unit and removing the direct sound component. The first signal processing unit changes the first effect processing when the sound signal is output externally from the first sound signal output unit and when it is not output.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] An embodiment of the present invention relates to a sound processing system and a sound processing method for the sound processing system. [Background technology]

[0002] Patent Document 1 discloses a system that uses a first instrument that produces sounds in response to a user's performance, and a second instrument that receives performance data from the first instrument and produces sounds.

[0003] Patent Document 2 discloses an electronic keyboard instrument that is connected to surround speakers and outputs reverb components. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-132695 [Patent Document 2] Japanese Patent Application Laid-Open No. 2017-181686 Summary of the Invention [Problem to be solved by the invention]

[0005] The system of Patent Document 1 does not include any description regarding effect processing.

[0006] The system of Patent Document 2 performs effect processing on the electronic musical instrument, and therefore simply provides sounds that are the result of the effect processing of the electronic musical instrument.

[0007] An object of one aspect of the present disclosure is to provide a sound processing system that can provide users with rich effect sounds that cannot be achieved by effect processing of electronic musical instruments. [Means for solving the problem]

[0008] A sound processing system according to one embodiment of the present invention includes an electronic musical instrument and a sound processing device connected to the electronic musical instrument. The electronic musical instrument includes a sound signal generation unit that generates a sound signal in response to a user's performance, a first signal processing unit that applies first effect processing to the sound signal, a first sound emitting unit that emits a first performance sound component based on the sound signal that has been subjected to the first effect processing by the first signal processing unit, and a first sound signal output unit that outputs the sound signal to an external device. The sound processing device includes a first sound signal receiving unit that receives the sound signal output from the first sound signal output unit, a second signal processing unit that applies second effect processing to the sound signal received by the first sound signal receiving unit and removes a direct sound component, and a second sound emitting unit that applies the second effect processing to the sound signal that has been removed from the direct sound component. The first signal processing unit changes the first effect processing depending on whether the sound signal is output from the first sound signal output unit to an external device or not. [Effects of the Invention]

[0009] According to one embodiment of the present invention, it is possible to provide the user with rich effect sounds that cannot be achieved by effect processing of electronic musical instruments. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a diagram showing a configuration of a sound processing system 1. FIG. [Figure 2] FIG. 1 is a block diagram showing the configuration of an electronic piano 10. [Figure 3] 4 is a flowchart showing the operation of the electronic piano 10. [Figure 4] 10 is a flowchart showing the operation of the electronic piano 10 when a connection with the receiver 11 is detected. [Figure 5] FIG. 2 is a block diagram showing the configuration of a receiver 11. [Figure 6] 10 is a flowchart showing the operation of the receiver 11. [Figure 7] 1 is an external view showing an example of a sound processing system 1 according to a first modification. [Figure 8]10 is a flowchart showing the operation of the receiver 11. [Figure 9] 4 is a flowchart showing the operation of the electronic piano 10. [Figure 10] FIG. 10 is a block diagram showing the configuration of an electronic piano 10 according to a third modification. DETAILED DESCRIPTION OF THE INVENTION

[0011] 1 is an external view showing an example of a sound processing system 1. The sound processing system 1 has an electronic piano 10 and a receiver 11. A plurality of speakers (speakers 12FL, 12FR, 12SL, and 12SR) are connected to the receiver 11. The speaker 12FL is disposed on the left side in front of the user, the speaker 12FR is disposed on the right side in front of the user, the speaker 12SL is disposed on the left side behind the user, and the speaker 12SL is disposed on the left side behind the user.

[0012] The electronic piano 10 is an example of an electronic musical instrument. In this embodiment, the electronic piano 10 is shown as an example of an electronic musical instrument, but electronic musical instruments also include electronic keyboard instruments such as electronic organs and synthesizers. Furthermore, the electronic musical instrument of the present invention is not limited to keyboard instruments, but includes all musical instruments that drive a sound source and generate sound signals in response to the user's performance.

[0013] The receiver 11 is an example of the sound processing device of the present invention. The sound processing device may also be, for example, a personal computer, a set-top box, a power amplifier, or a powered speaker. The sound processing device of the present invention includes all devices that can apply effect processing to sound signals.

[0014] The electronic piano 10 and the receiver 11 are connected via a network such as Bluetooth (registered trademark) or wireless LAN, etc. Alternatively, the electronic piano 10 and the receiver 11 may be connected via a wired connection such as HDMI (registered trademark), MIDI, LAN, USB, or an audio cable.

[0015] FIG. 2 is a block diagram showing the configuration of the electronic piano 10, and FIG. 3 is a flowchart showing the operation of the electronic piano 10.

[0016] The electronic piano 10 includes a display 100, a user interface (I / F) 101, a keyboard 102, a sensor 103, a flash memory 104, a CPU 105, a RAM 106, a communication interface (I / F) 107, a waveform memory 108, a sound source 109, a DSP 110, a D / A converter 111, an amplifier 112, and a speaker 113.

[0017] The display 100 is made up of, for example, an LED, an LCD (Liquid Crystal Display), an OLED (Organic Light-Emitting Diode), or the like, and displays the status of the electronic piano 10, etc.

[0018] The user I / F 101 includes knobs, switches, buttons, a touch panel, or the like, and accepts operations from the user.

[0019] The keyboard 102 receives a performance operation (key pressing operation) from the user. The sensor 103 detects the operation of the keyboard 102.

[0020] The CPU 105 reads various programs stored in a flash memory 104, which is a storage medium, into the RAM 106 to control the electronic piano 10. For example, the CPU 105 generates performance information for driving the sound source 109 based on the movements of the keyboard 102 detected by the sensor 103. The performance information includes information for specifying note-on, note-off, velocity, or tone color, etc.

[0021] The sound source 109 reads waveform data from the waveform memory 108 based on the performance information generated by the CPU 105, and generates a sound signal. As a result, the sound source 109 generates a sound signal in accordance with the user's performance (S11).

[0022] The DSP 110 is an example of a first signal processing unit of the present invention, and performs a first effect processing on the sound signal generated by the sound source 109 (S12). The first effect processing includes a reverb processing that adds a reverb component to the sound signal. The reverb processing is a process that simulates the reverberation (reflected sound) of a room by adding a predetermined delay time to the received sound signal and generating level-adjusted pseudo-reflected sound.

[0023] The DSP 110 outputs the sound signal after the first effect processing to the D / A converter 111 .

[0024] The D / A converter 111 converts the digital sound signal received from the DSP 110 into an analog sound signal. The amplifier 112 amplifies the analog sound signal.

[0025] The speaker 113 corresponds to the first sound emitting section of the present invention, and outputs a performance sound based on the analog sound signal amplified by the amplifier 112 (S13). That is, the speaker 113 emits a first performance sound component including the sound signal generated by the sound source 109 (the sound signal of the direct sound).

[0026] In this way, the electronic piano 10 outputs a performance sound according to the performance of the user.

[0027] The electronic piano 10 then performs the following operations when it detects a connection to the receiver 11. Figure 4 is a flowchart showing the operations of the electronic piano 10 when it detects a connection to the receiver 11.

[0028] When CPU 105 detects connection with receiver 11, it outputs the sound signal generated by sound source 109 to the outside via communication I / F 107 (S21). Communication I / F 107 is an example of a first sound signal output unit of the present invention, and outputs the sound signal generated by sound source 109 to the outside.

[0029] The DSP 110 reduces the reverb component when outputting the sound signal from the communication I / F 107 to the outside (S22). For example, the DSP 110 may reduce the level of the reverb component, or may reduce the reverb component by shortening the duration of the reverb. Alternatively, the DSP 110 may reduce the reverb component by turning off reverb processing.

[0030] DSP 110 outputs the sound signal with the reverb component reduced to speaker 113 via D / A converter 111 and amplifier 112. Speaker 113 outputs a performance sound based on the sound signal with the reverb component reduced (S23). That is, speaker 113 emits a first performance sound component with the reverb component reduced. When DSP 110 turns off reverb processing, speaker 113 emits only the first performance sound component of the sound signal (sound signal of the direct sound) generated by sound source 109.

[0031] FIG. 5 is a block diagram showing the configuration of the receiver 11, and FIG. 6 is a flowchart showing the operation of the receiver 11.

[0032] The receiver 11 includes a display 201 , a user I / F 202 , a flash memory 203 , a CPU 204 , a RAM 205 , a DSP 206 , a communication I / F 207 , a D / A converter 208 , an amplifier 209 , and an audio interface (I / F) 210 .

[0033] The display 201 is made up of, for example, an LED, an LCD, an OLED, or the like, and displays various information.

[0034] The user I / F 202 includes knobs, switches, buttons, a touch panel, or the like, and accepts operations from the user.

[0035] The CPU 204 is a control unit that controls the operation of the receiver 11. The CPU 204 performs various operations by reading out a program stored in a flash memory 203, which is a storage medium, into a RAM 205 and executing the program.

[0036] The communication I / F 207 corresponds to the first sound signal receiving unit of the present invention, and receives a sound signal from the electronic piano 10 (S31).

[0037] The DSP 206 is an example of a second signal processing unit of the present invention, and applies second effect processing (S32) to the sound signal received by the communication I / F 207. The second effect processing includes reverb processing that adds a reverb component.

[0038] More specifically, the reverb processing in the second effect processing is processing that reproduces the reverberation of a specific acoustic space such as a specific concert hall, live music venue, church, etc. The reverb processing in the second effect processing is processing that convolves an impulse response acquired in advance using a microphone installed in a certain position (audience seats, stage, etc.) in an actual concert hall, live music venue, church, etc., into a sound signal.

[0039] The reverb processing in the second effect processing reproduces longer reflected sounds than the reverb processing in the first effect processing, and can reproduce a reverberation that is closer to that of an actual hall.

[0040] Furthermore, the reverb processing in the second effect processing includes a process of adding localization to each reflected sound corresponding to an impulse response by distributing a sound signal related to a reverb component to multiple speakers (speakers 12FL, 12FR, 12SL, and 12SR). For example, if a sound signal of a reflected sound is input to speaker 12FL and speaker 12SL at the same volume and timing, the user will perceive the reflected sound midway between speaker 12FL and speaker 12SL, that is, to the left of the user.

[0041] The receiver 11 distributes sound signals to the multiple speakers (speakers 12FL, 12FR, 12SL, and 12SR) based on the positions of the multiple speakers (speakers 12FL, 12FR, 12SL, and 12SR) so that reflected sounds are localized in the same positions as in an actual hall or the like. The positions of the multiple speakers (speakers 12FL, 12FR, 12SL, and 12SR) can be detected, for example, by outputting test sounds from the multiple speakers (speakers 12FL, 12FR, 12SL, and 12SR) and collecting the test sounds with microphones installed at the positions of users. In addition, the positions of reflected sounds in an actual hall can be obtained by installing multiple microphones in the actual hall and measuring impulse responses.

[0042] This allows the user to perceive reflected sounds as coming from the same position as in the acoustic space of the user's desired hall or the like.

[0043] The flash memory 203 acquires and stores impulse responses of multiple acoustic spaces in advance. The user can select a desired acoustic space from multiple acoustic spaces (such as a specific concert hall, live music venue, or church) via the user I / F 202. Alternatively, the user may select a desired acoustic space via the user I / F 101 of the electronic piano 10. In this case, the electronic piano 10 acquires information indicating the names of the multiple acoustic spaces from the receiver 11 and displays it on the display 100. The user selects a desired acoustic space from the displayed multiple acoustic spaces. The electronic piano 10 transmits information indicating the name of the selected acoustic space to the receiver 11.

[0044] Furthermore, flash memory 203 may acquire and store in advance a plurality of impulse responses for different listening environments, such as when the acoustic space is empty and when the space is full, even for the same acoustic space. In this case, the user may select the name of the acoustic space and the listening environment.

[0045] The DSP 206 reads the impulse response of the selected acoustic space from the flash memory 203 and convolves it with the sound signal received by the communication I / F 207. The DSP 206 outputs the sound signal after the second effect processing to the D / A converter 208.

[0046] The D / A converter 208 converts the digital sound signal received from the DSP 206 into an analog sound signal. The amplifier 209 amplifies the analog sound signal.

[0047] The audio I / F 210 includes a speaker connection terminal and outputs sound signals amplified by the amplifier 209 to a plurality of speakers (speakers 12FL, 12FR, 12SL, and 12SR). The audio I / F 210 and the plurality of speakers correspond to a second sound emitting unit of the present invention. The speakers 12FL, 12FR, 12SL, and 12SR each output a performance sound based on the sound signal supplied from the audio I / F 210 (S33). In other words, the audio I / F 210 and the plurality of speakers emit a second performance sound component based on the sound signal that has been subjected to the second effect processing and from which the direct sound component has been removed.

[0048] The first performance sound component is a sound with reduced reverb components, and the second performance sound component is a sound to which the reverb components are added by the receiver 11 and from which the direct sound components are removed.

[0049] As a result, the sound processing system 1 can provide the user with a rich effect sound that cannot be achieved by the first effect processing of an electronic musical instrument. More specifically, the receiver 11 performs reverb processing using an impulse response acquired in advance in an actual acoustic space such as a hall. The receiver 11 also reproduces the sense of localization of reflected sounds using multiple speakers (speakers 12FL, 12FR, 12SL, and 12SR). Therefore, the receiver 11 can reproduce reflected sounds that are closer to the reverberation of an actual acoustic space than the first effect processing of the electronic piano 10.

[0050] This allows the user to perceive as if they were performing in a real acoustic space such as a hall. Furthermore, the user can select a preferred virtual acoustic space from virtual acoustic spaces such as a specific concert hall, live music venue, or church via the user I / F 202. This allows the sound processing system 1 to allow the user to experience, in a performance using an electronic musical instrument, as if the user were performing in the virtual acoustic space of their choice, which exists in the real space.

[0051] The second performance sound components emitted from the multiple speakers (speakers 12FL, 12FR, 12SL, and 12SR) are sounds excluding the direct sound components. The direct sound components are output only from the speaker 113 of the electronic piano 10. Therefore, the direct sound components are not emitted from a location other than the electronic piano 10, and do not cause any discomfort during performance.

[0052] (Variation 1) Fig. 7 is an external view showing an example of the sound processing system 1 according to Modification 1. Fig. 8 is a flowchart showing the operation of the receiver 11, and Fig. 9 is a flowchart showing the operation of the electronic piano 10.

[0053] The receiver 11 of the sound processing system 1 of the first modification emits the second performance sound component from the speaker 113 of the electronic piano 10 in addition to the speakers 12FL, 12FR, 12SL, and 12SR connected to the receiver 11 itself as a plurality of speakers.

[0054] 8, the receiver 11 transmits the sound signal after the second effect processing to the electronic piano 10 via the communication I / F 207 (S303). In this case, the communication I / F 207 corresponds to the second sound signal output unit of the present invention.

[0055] The receiver 11 can detect the position of the speaker 113 by outputting a test sound from the speaker 113 and collecting the test sound with a microphone installed at the user's position. The receiver 11 distributes sound signals to the speaker 113 and speakers 12FL, 12FR, 12SL, and 12SR based on their respective positions so that reflected sounds are localized in the same positions as in an actual hall, etc. The sound signals distributed to the speaker 113 are transmitted to the electronic piano 10 via the communication I / F 207 as described above.

[0056] 9, the electronic piano 10 receives a sound signal from the receiver 11 via the communication I / F 107 (S201). In this case, the communication I / F 107 corresponds to the second sound signal receiving unit of the present invention. Based on the received sound signal, the electronic piano 10 emits a second performance sound component from the speaker 113 (S202).

[0057] As a result, the sound processing system 1 according to the first modification further emits the second performance sound component using the speaker 113 of the electronic piano 10. As a result, the sound processing system 1 can reproduce a richer sound.

[0058] (Variation 2) In the above embodiment, an example was shown in which the electronic piano 10 transmits a sound signal to the receiver 11 when it detects a connection with the receiver 11, and emits the second performance sound component from the receiver 11. In contrast, the electronic piano 10 of Modification 2 may transmit a sound signal to the receiver 11 and emit the second performance sound component from the receiver 11 when it receives a user operation at the user I / F 101. For example, the user I / F 101 has a switch labeled "External Reverb." When the user turns on the "External Reverb" switch, the electronic piano 10 transmits a sound signal to the receiver 11 and emits the second performance sound component from the receiver 11.

[0059] The user I / F 101 may also have an operator such as a knob labeled "reverb level." For example, the user can set the "reverb level" to one of five levels. When the user sets the "reverb level" to one of 1 to 4, the electronic piano 10 performs reverb processing as the first effect processing and does not transmit a sound signal to the receiver 11. On the other hand, when the user sets the "reverb level" to the maximum level of 5, the electronic piano 10 transmits a sound signal to the receiver 11, and the receiver 11 emits a second performance sound component.

[0060] (Variation 3) 10 is a block diagram showing the configuration of the electronic piano 10 according to Modification 3. The electronic piano 10 according to Modification 2 further includes a pedal 114.

[0061] The pedal 114 is an example of a control of the present invention, and is an example of a control for changing parameters of the second effect processing. The electronic piano 10 detects the amount of depression of the pedal 114 and transmits information indicating the amount of depression to the receiver 11. The receiver 11 receives the information indicating the amount of depression and changes the parameters of the second effect processing in accordance with the received information indicating the amount of depression.

[0062] For example, the receiver 11 adds a reverb component with a longer reverberation time the greater the pedal depression. This allows the user to change the parameters of the second effect processing according to the pedal depression. In other words, the user can adjust the strength of the reverberation while playing and listening to the performance sound.

[0063] In addition, the electronic piano 10 may perform the reverb processing of the first effect processing when the amount of depression is less than a predetermined value and not send a sound signal to the receiver 11, but when the amount of depression exceeds the predetermined value, the electronic piano 10 may send a sound signal to the receiver 11 and emit a second performance sound component from the receiver 11.

[0064] (Variation 4) The electronic piano 10 or receiver 11 of the fourth modification accepts designation of a stage mode and an audience mode. The stage mode is a mode in which reverb processing is performed using impulse responses acquired in advance by placing microphones on a stage in an actual acoustic space such as a hall. The audience mode is a mode in which reverb processing is performed using impulse responses acquired in advance by placing microphones in the audience seats in an actual acoustic space such as a hall.

[0065] Even in the same acoustic space, the flash memory 203 previously acquires and stores impulse responses acquired on stage and impulse responses acquired in the audience seats.

[0066] The user specifies the stage mode or the audience mode via the user I / F 101 of the electronic piano 10 or the user I / F 202 of the receiver 11. When the stage mode is accepted, the receiver 11 reads out the impulse response acquired by the microphone on the stage from the flash memory 203 and performs the second effect processing. When the audience mode is accepted, the receiver 11 reads out the impulse response acquired by the microphone in the audience from the flash memory 203 and performs the second effect processing.

[0067] This allows users to perceive the performance as if they were on a stage in a real hall, or as if they were listening to the performance from their seats.

[0068] The stage mode may further include a first stage mode in which the audience seats are on the right side as viewed from the electronic piano 10, and a second stage mode in which the audience seats are on the left side. The receiver 11 inverts the sound signals distributed to the multiple speakers between left and right in the first stage mode and second stage mode.

[0069] This allows users to perceive the performance as if they were on a stage in a real hall with the audience seated to their right, or as if they were on the left.

[0070] (Variation 5) In the above embodiment, the second performance sound component is a sound to which the receiver 11 adds a reverb component and removes a direct sound component. However, the receiver 11 does not need to remove all of the direct sound component from the received sound signal. The second performance sound component may contain a small amount of the direct sound component. In other words, it is sufficient that the second performance sound component emitted by the receiver 11 is mainly a reverb component.

[0071] (Variation 6) In the above embodiment, the electronic piano 10 performed processing to reduce reverb components when outputting sound signals to the outside. However, the electronic piano 10 does not necessarily need to reduce reverb components when outputting sound signals to the outside. If the electronic piano 10 does not perform reverb processing when not outputting sound signals to the outside, or if the electronic piano 10 maintains a state in which reverb processing is not performed even when outputting sound signals to the outside. Alternatively, if the reflected sound of the reverb processing performed by the electronic piano 10 is short or the level of the reflected sound is low, the electronic piano 10 does not need to reduce reverb components. The first performance sound component may contain a small amount of reverb components. In other words, it is sufficient for the first performance sound component to be mainly a direct sound.

[0072] The description of the present embodiment should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is defined not by the above-described embodiments but by the claims. Furthermore, the scope of the present invention includes the scope equivalent to the claims.

[0073] For example, in the above embodiment, reverb processing is shown as an example of effect processing, but the effect processing may be other effect processing such as equalizer, chorus, etc. [Explanation of symbols]

[0074] 1: Sound processing system 10: Electronic piano 11: Receiver 12FL: Speaker 12FR: Speaker 12SL: Speaker 12SR: Speaker 100: Display 101: User I / F 102: Keyboard 103: Sensor 104: Flash memory 105: CPU 106:RAM 107: Communication I / F 108: Waveform memory 109: Sound source 110:DSP 111: D / A converter 112: Amplifier 113: Speaker 114: Pedal 201:Display unit 202: User I / F 203: Flash memory 204: CPU 205:RAM 206:DSP 207: Communication I / F 208: D / A converter 209: Amplifier 210: Audio I / F

Claims

1. A sound processing system comprising an electronic musical instrument and a sound processing device connected to the electronic musical instrument, The electronic musical instrument comprises: a sound signal generating unit that generates a sound signal in response to a user's performance; a first signal processing unit that applies a first effect processing to the sound signal; a first sound emitting unit that emits a first performance sound component based on the sound signal that has been subjected to the first effect processing by the first signal processing unit; a first sound signal output unit that outputs the sound signal generated by the sound signal generation unit to an outside; Equipped with The sound processing device includes: a first sound signal receiving unit that receives the sound signal output from the first sound signal output unit; a second signal processing unit that performs second effect processing on the sound signal received by the first sound signal receiving unit and removes direct sound components; a second sound emitting unit that emits a second performance sound component based on the sound signal obtained by performing the second effect processing in the second signal processing unit and excluding the direct sound component; Equipped with the first signal processing unit changes the first effect processing depending on whether the sound signal is output from the first sound signal output unit to an external device or not; the first effect processing and the second effect processing include reverb processing that adds a reverb component, the first signal processing unit reduces the reverb component when the sound signal is output from the first sound signal output unit to an external device; Sound processing system.

2. the sound processing device includes a second sound signal output unit that outputs the sound signal after the second effect processing to an external device, the electronic musical instrument includes a second sound signal receiving unit that receives the sound signal output from the second sound signal output unit, the first sound emitting unit emits the second performance sound component based on the sound signal received by the second sound signal receiving unit; The sound processing system of claim 1 .

3. the electronic musical instrument and the sound processing device are connected via a network; 3. The sound processing system according to claim 1.

4. the second sound emitting unit includes a plurality of speakers, distributing the second performance sound component to the plurality of speakers to emit the second performance sound component; The sound processing system according to any one of claims 1 to 3.

5. The electronic musical instrument is a keyboard instrument. The sound processing system according to any one of claims 1 to 4.

6. the first signal processing unit changes the first effect processing when detecting a connection with the sound processing device; The sound processing system according to any one of claims 1 to 5.

7. the electronic musical instrument includes an operator for changing a parameter of the second effect processing of the sound processing device; The sound processing system according to any one of claims 1 to 6.

8. A sound processing method for a sound processing system including an electronic musical instrument and a sound processing device connected to the electronic musical instrument, comprising: The electronic musical instrument comprises: Generates sound signals according to the user's performance, performing first signal processing to apply first effect processing to the sound signal; emitting a first performance sound component based on the sound signal that has been subjected to the first effect processing; outputting the generated sound signal to the outside; The sound processing device includes: receiving the sound signal output from the electronic musical instrument; performing second effect processing on the received sound signal and performing second signal processing to remove direct sound components; a second performance sound component is generated based on the sound signal from which the second effect processing has been performed and from which the direct sound component has been removed; the first signal processing changes the first effect processing depending on whether the electronic musical instrument outputs the sound signal to an external device or not; the first effect processing and the second effect processing include reverb processing that adds a reverb component, the first signal processing reduces the reverb component when the electronic musical instrument outputs the sound signal to an external device; Sound processing methods.

9. the sound processing device outputs the sound signal after the second effect processing to an external device; the electronic musical instrument receives the sound signal output from the sound processing device; the electronic musical instrument emits the second performance sound component based on the sound signal received from the sound processing device; The sound processing method according to claim 8.

10. the electronic musical instrument and the sound processing device are connected via a network; The sound processing method according to claim 8 or 9.

11. The sound processing device includes a plurality of speakers, distributing the second performance sound component to the plurality of speakers to emit the second performance sound component; The sound processing method according to any one of claims 8 to 10.

12. The electronic musical instrument is a keyboard instrument. The sound processing method according to any one of claims 8 to 11.

13. the first signal processing changes the first effect processing when a connection with the sound processing device is detected; The sound processing method according to any one of claims 8 to 12.

14. the electronic musical instrument includes an operator for changing a parameter of the second effect processing of the sound processing device; The sound processing method according to any one of claims 8 to 13.

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