Musical sound control device, method, and program

Abstract

To provide a musical sound control device and a musical sound control program having a configuration that can control a musical sound by moving a musical instrument, capable of easily maintaining an arbitrary modulation amount without hindrance to playing of the musical instrument.SOLUTION: A musical sound control device comprises: a force sensor that detects a tension generated between an electric guitar and a guitar strap; a holding button that detects a pressing operation of the musical sound control device based on a motion of a player; and a control unit. The control unit carries out the following: determination processing that determines whether or not the pressing operation satisfies a predetermined requirement when the pressing operation is detected on the holding button; and switching processing that switches between a first mode that outputs a control signal corresponding to a detected value detected by a force sensor without holding a control signal output being outputted when it is determined that the pressing operation satisfies the predetermined requirement in the determination processing, and a second mode that holds the control signal output being outputted without outputting the control signal corresponding to the detected value.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a musical sound control device and a musical sound control program.

Background Art

[0002] Conventionally, a technique has been proposed in which a sensor or the like is incorporated between a musical instrument and a strap for a player to hold the musical instrument, and the force generated when the player pulls the strap is detected by the sensor or the like, and a signal for controlling musical sound is output according to the detected value. For example, Patent Document 1 discloses a portable electronic musical instrument in which a pressure sensor or an elongation detection sensor is incorporated in a strap. In this portable electronic musical instrument, by moving the musical instrument to apply pressure to the strap or cause elongation, a signal for controlling musical sound is output according to the detected value of the sensor, and control of pitch bend, modulation amount, volume, etc. can be performed. Therefore, it is possible to control musical sound while holding the musical instrument with both hands without performing a switching operation.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] For example, when controlling musical sound using an expression pedal, by fixing the pedal at an arbitrary position, it is possible to perform the performance of the musical instrument while maintaining an arbitrary modulation amount. However, in the portable electronic musical instrument of Patent Document 1 above, when performing the performance of the musical instrument while maintaining an arbitrary modulation amount, it is necessary to continue applying a constant pressure to the strap or cause a constant elongation while performing the performance. Therefore, if an attempt is made to maintain an arbitrary modulation amount, there is a risk of hindering the performance of the musical instrument.

[0005] An object of the present invention is to provide a tone control device and a tone control program that can control tones by moving a musical instrument and can easily maintain an arbitrary modulation amount without hindering the performance of the musical instrument.

Means for Solving the Problems

[0006] A tone control device according to an aspect of the present invention includes a first detection unit that detects a tension generated between a musical instrument and a musical instrument holder, a second detection unit that detects movement of at least a part of the tone control device, and a control unit. The control unit, when the movement is detected by the second detection unit, performs a determination process of determining whether the movement satisfies a predetermined condition, and when it is determined in the determination process that the movement satisfies the predetermined condition, outputs the signal according to the detection value detected by the first detection unit without holding the signal output during output, and executes a switching process of switching between a first mode and a second mode of holding the signal output during output without outputting a signal according to the detection value.

[0007] A tone control program according to an aspect of the present invention causes a computer of the tone control device including a first detection unit that detects a tension generated between a musical instrument and a musical instrument holder and a second detection unit that detects movement of at least a part of the tone control device, when the movement is detected by the second detection unit, to perform a determination process of determining whether the movement satisfies a predetermined condition, and when it is determined in the determination process that the movement satisfies the predetermined condition, to execute a switching process of switching between a first mode of outputting the signal according to the detection value detected by the first detection unit without holding the signal output during output and a second mode of holding the signal output during output without outputting a signal according to the detection value.

Effects of the Invention

[0008] According to the present invention, there are provided a tone control device and a tone control program that can maintain an arbitrary modulation amount easily without hindering the performance of a musical instrument while having a configuration capable of controlling musical tones by moving the musical instrument.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Mode for Carrying Out the Invention

[0010] (First Embodiment) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 4. In the performance system 1 shown in FIG. 1, a musical sound control device 10 according to the first embodiment is provided in a form that connects between an electric guitar (musical instrument) 200 and a guitar strap (musical instrument holder) 210 that a performer (user) wears on the shoulder to hold the electric guitar 200. The electric guitar 200 has the musical sound control device 10 connected to a strap pin 15 (see FIG. 2) provided on one end side (head side) of the body, and the guitar strap 210 is connected to a strap pin (not shown) provided on the other end side of the body. During the performance of the electric guitar 200, the electric guitar 200 is connected to a known sound processor (effect device) 100 via a shield cable 220 or the like.

[0011] The sound processor 100 is a multi-effect, and includes an electric signal input unit 110, an effect unit 120, an electric signal output unit 130, a control signal input unit 140, and the like. The electric signal input unit 110 receives the electric signal output from the electric guitar 200. The electric signal output unit 130 is connected to a known guitar amplifier 300 and outputs the electric signal to the guitar amplifier 300. The effect unit 120 applies various effects such as modulation to the electric signal output from the guitar amplifier 300 and changes the parameters of the effect according to a control signal from the musical sound control device 10 described later.

[0012] The control signal input unit 140 is an input unit for input, for example, by an expression pedal, and a receiving device 80 is connected thereto. The receiving device 80 operates to output a detection value as a voltage value to the sound processor 100 side in the same manner as a standard jack of a known expression pedal, and is connected to the control signal input unit 140.

[0013] Communication between the sound control device 10 and the receiving device 80 is performed by wireless communication means such as BLE (Bluetooth Low Energy (registered trademark)). The wireless communication means is not limited to BLE, and may be, for example, WiFi, an FM transmitter, or communication by infrared rays. The receiving device 80 receives the control signal output from the sound control device 10 by the wireless communication means and inputs it to the control signal input unit 140 of the sound processor 100 as an operation value of the expression pedal.

[0014] Next, the configuration of the sound control device 10 will be described. As shown in FIG. 2, the sound control device 10 has a vertically long rectangular box shape. Hereinafter, the sound control device 10 is connected between the electric guitar 200 and the guitar strap 210, and in a state where the performer wears the guitar strap 210 on the shoulder, the side of the guitar strap 210 (shoulder side, upper left side in FIG. 2) is defined as the upper side, the opposite side (guitar side, lower right side in FIG. 2) is defined as the lower side, the head side of the electric guitar 200 (left hand side of the performer, upper right side in FIG. 2) is defined as the left side, the opposite side (right hand side of the performer, lower left side in FIG. 2) is defined as the right side, and the front side of the electric guitar 200 (front side in FIG. 2) is defined as the front side, and the opposite side is defined as the rear side for explanation.

[0015] The sound control device 10 includes a box-shaped case 20 that is the device main body, a connection button unit 11 connected to the upper side of the case 20, and a connection ring unit 12 connected to the lower side of the case 20. The connection button unit 11 is a flat plate member that extends short in a substantially flat plate shape, and is connected to one end of the first shaft 31 exposed from the upper side of the case 20 via the first connection shaft 31d. The connection button unit 11 is rotatably connected around the shaft of the first shaft 31 and is also rotatably connected around the axis of the first connection shaft 31d. A connection button 11a is provided on the front side of the upper end of the connection button unit 11. By button-fastening the connection button 11a to a circular opening (not shown) on the slit 211 provided at one end of the guitar strap 210, the sound control device 10 and the guitar strap 210 are connected.

[0016] The connection ring part 12 is a flat plate member that extends short in a substantially flat plate shape, and is connected to one end of the second shaft 32 that is exposed from the lower side of the case 20 via the second connection shaft 32d. The connection ring part 12 is rotatably connected around the shaft axis of the second shaft 32 and is also rotatably connected around the axis of the second connection shaft 32d. A connection opening 12a is provided at a substantially central part of the connection ring part 12. By fitting a strap pin 15 provided at one end side of the body of the electric guitar 200 into the connection opening, the connection between the sound control device 10 and the electric guitar 200 is established.

[0017] The case 20, which is the device body, has a front case 21 that constitutes the front part of the case 20 and a rear case 22 that constitutes the rear part of the case 20. Various members are accommodated between the front case 21 and the rear case 22. The front case 21 has an annular inclined part 21a whose outer periphery of the edge of the front surface 21c is chamfered in a C shape. A substantially upper half region (substantially U-shaped region) of the inclined part 21a is an indicator part 21b formed of a light-transmissive material. Further, four button openings 21d for exposing four button parts 42, which will be described later, to the outside are respectively provided in the upper part of the front surface 21c of the front case 21.

[0018] Inside the front case 21, a substrate 40 is accommodated. On the substrate 40, nine LEDs 41 provided at equal intervals at positions corresponding to the indicator part of the front case 21, four button parts 42 respectively provided at positions corresponding to the button openings 21d of the front case 21, and a control part 50 are mounted. The light emission mode of each LED 41 is controlled by the control part 50. The light emitted from each LED 41 passes through the indicator part 21b and is visible to the performer or the like.

[0019] Each button unit 42 is configured to receive a pressing operation by the performer. One of the four button units 42 is a holding button (second detection unit, switch) 42A. The holding button 42A is a button for receiving an instruction from the performer to switch the output mode of a control signal described later. When the holding button 42A is pressed by the performer, the holding button 42A detects that it has been pressed (movement) and outputs a detection signal thereof. The other three button units 42 are assigned various functions such as a function of turning on or off the power of the tone control device 10, a function of accessing the Bluetooth (registered trademark) pairing function, and a function of reversing the phase of the tone by performing a pressing operation.

[0020] Inside the rear case 22, a force sensor 30 is housed. Also, on the rear surface side of the rear case 22, a battery (not shown) for supplying power to the tone control device 10 is housed. The force sensor 30 is composed of a load cell 38, a first shaft 31, a second shaft 32, etc. The load cell 38 is made of a rectangular parallelepiped-shaped metal strain body, and sensor devices such as strain gauges (not shown) are provided at the center in the left-right direction.

[0021] The first shaft 31 is a substantially cylindrical shaft member, the upper end of which is exposed above the rear case 22 and is rotatably connected around the axis of the first connecting shaft 31d with respect to the first connecting shaft 31d. The lower end of the first shaft 31 is rotatably connected around the axis of the first shaft 31 to the load cell 38 via a sheet metal member (not shown). The second shaft 32 is a substantially cylindrical shaft member, the lower end of which is exposed below the rear case 22 and is rotatably connected around the axis of the second connecting shaft 32d with respect to the second connecting shaft 32d. The upper end of the second shaft 32 is rotatably connected around the axis of the second shaft 32 to the load cell 38 via a sheet metal member (not shown).

[0022] Here, the tension generated between the electric guitar 200 and the guitar strap 210 is applied to both the first shaft 31 and the second shaft 32 via the connection button portion 11 and the connection ring portion 12. And the load cell 38 is arranged with the longitudinal direction being the direction orthogonal to the axial direction of the first shaft 31 and the second shaft 32. For this reason, when the player tenses the guitar strap 210 or the like and a tension is applied between the first shaft 31 and the second shaft 32, the sensor device provided in the load cell 38 measures the amount of elongation of the load cell 38, and it is processed by a control unit (not shown) included in the load cell 38 and converted into a tension value (detection value). In this way, the force sensor 30 can detect the tension generated between the electric guitar 200 and the guitar strap 210.

[0023] Next, with reference to FIG. 3, the electrical configuration of the tone control device 10 will be described. The tone control device 10 is overall controlled by a control unit 50 mounted on a substrate 40. The control unit 50 includes an arithmetic processing unit 51 composed of a computer such as a CPU. Connected to the arithmetic processing unit 51 are a notification processing unit 52, a storage unit 53, a first input unit 54, a second input unit 55, an instruction reception unit 56, an output processing unit 57, a determination processing unit 58, a switching processing unit 59, and the like.

[0024] The notification processing unit 52 is configured to notify the player of various information through the indicator unit 21b by controlling the light emission mode of each LED 41. Specifically, the notification processing unit 52 executes a notification process of notifying the player of information by changing the light emission color or light emission interval of the LED 41 or changing the light emission positions of the nine LEDs 41. Note that the notification processing unit 52 may have a built-in speaker for notifying the player of information.

[0025] The storage unit 53 is composed of an EEPROM (Electrically Erasable Programmable ROM) that stores programs for controlling the CPU and the like, and a flash memory that temporarily stores various data 53B. The storage unit 53 stores a program (tone control program) 53A for executing sensor processing described later. Further, the storage unit 53 stores a holding flag 53C described later together with its state (on state or off state).

[0026] The first input unit 54 is configured to capture a detection signal (detection value) output from the force sensor 30 described above. The second input unit 55 is configured to capture a detection signal output from the hold button 42A when the hold button 42A is pressed. The instruction reception unit 56 is configured to receive various instructions from the performer by pressing the button unit 42 excluding the hold button 42A.

[0027] The output processing unit 57 outputs a signal (hereinafter referred to as "control signal") for controlling the tone according to the detection value of the force sensor 30 to the receiving device 80 side. The control signal is output in either a normal output (first mode) or a hold output (second mode). The normal output here refers to an output mode in which the control signal output during output is not held and a control signal corresponding to the detection value of the force sensor 30 is output, and the hold output refers to an output mode in which the control signal output during output is held without outputting a control signal corresponding to the detection value of the force sensor 30. The output processing unit 57 switches the output mode of the control signal according to the state of the hold flag 53C stored in the storage unit 53. That is, if the hold flag 53C is in the off state, the control signal is output in the normal output, and if the hold flag 53C is in the on state, the control signal is output in the hold output.

[0028] The determination processing unit 58 monitors the second input unit 55 and determines that a predetermined condition is satisfied when the hold button 42A is pressed down, that is, when a detection signal from the hold button 42A is input to the second input unit 55. When the determination processing unit 58 determines that the predetermined condition is satisfied, the switching processing unit 59 switches the output mode of the control signal in the output processing unit 57.

[0029] In the musical sound control device 10 of the present embodiment, when the performer presses down the hold button 42A during performance or the like, a process of holding the control signal being output (hereinafter referred to as "hold process") is executed. Hereinafter, the hold process executed by the control unit 50 of the musical sound control device 10 according to the first embodiment will be described with reference to FIG. 4. The hold process is started when the power of the musical sound control device 10 is turned on. In the hold process, the control unit 50 first sets the hold flag 53C stored in the storage unit 53 to the off state (step S10).

[0030] Next, the control unit 50 determines whether there is a change in the detection value of the force sensor 30 from the detection value of the force sensor 30 input from the force sensor 30 to the first input unit 54 (step S12). Specifically, the control unit 50 compares the detection value of the force sensor 30 input last time with the detection value of the force sensor 30 input this time. If there is a change from the detection value input last time, the control unit 50 determines that there is a change in the detection value (S12: YES) and proceeds to step S14. On the other hand, if there is no change from the detection value input last time, the control unit 50 determines that there is no change in the detection value (S12: NO) and proceeds to step S18.

[0031] In step S14, the control unit 50 reads the hold flag 53C stored in the storage unit 53 and determines whether the hold flag 53C is in the on state. If the hold flag 53C is in the on state (S14: YES), the control unit 50 proceeds to step S18. If the hold flag 53C is not in the on state, that is, if the hold flag 53C is in the off state (S14: NO), the output processing unit 57 of the control unit 50 outputs a control signal according to the detection value of the force sensor 30 input this time detected in step S12 (output processing) (step S16) and proceeds to step S18.

[0032] In step S18, the determination processing unit 58 of the control unit 50 determines whether the hold button 42A has been pressed down. When the determination processing unit 58 determines that the hold button 42A has been pressed down (S18: YES), it determines that a predetermined condition is satisfied and proceeds to step S20. When the determination processing unit 58 determines that the hold button 42A has not been pressed down (S18: NO), it proceeds to step S24.

[0033] In step S20, the switching processing unit 59 of the control unit 50 reads the hold flag 53C stored in the storage unit 53 and determines whether the hold flag 53C is in the on state. If the hold flag 53C is in the on state (S20: YES), the switching processing unit 59 switches the hold flag 53C to the off state and stores it in the storage unit 53 (switching processing) (step S22), and proceeds to step S24. If the hold flag 53C is not in the on state, that is, if the hold flag 53C is in the off state (S20: NO), the switching processing unit 59 switches the hold flag 53C to the on state and stores it in the storage unit 53 (switching processing) (step S26), and proceeds to step S24.

[0034] In step S24, the control unit 50 determines whether the power of the tone control device 10 has been turned off. When the control unit 50 determines that the power of the tone control device 10 has been turned off (S24: YES), it ends the sensor processing. When the control unit 50 determines that the power of the tone control device 10 is not turned off (S24: NO), it returns to step S12 and executes the process of step S12. In the tone control device 10 according to the first embodiment, the holding process is executed as described above. In the holding process, the notification processing unit 52 of the control unit 50 causes the LED 41 to emit light in an arbitrary color (for example, green) while the holding flag 53C is in the off state to notify the performer that the output mode is the normal output (the second notification mode), and causes the LED 41 to emit light in another arbitrary color (for example, red) while the holding flag 53C is in the on state to notify the performer that the output mode is the holding output (the first notification mode).

[0035] Here, referring to FIG. 5, an example of a waveform showing a change in the output value of the detection value of the force sensor 30 when the output mode of the control signal is alternately switched between the normal output and the holding output in the holding process will be described. The vertical axis in FIG. 5 indicates the detection value (volt) detected by the force sensor 30, and the horizontal axis indicates the time (milliseconds). The waveform W2 indicated by the broken line in FIG. 5 indicates the detection value of the force sensor 30, and the waveform W1 indicated by the solid line indicates the output value output by the output processing unit 57 according to the detection value of the force sensor 30.

[0036] As shown in FIG. 5, after the start of the holding process, since the output mode is the normal output, as the detected value of the force sensor 30 increases, the output value of the output processing unit 57 also increases and is output accordingly (refer to the waveform W1 before t1. Note that before t1, the waveform changes of the waveform W1 and the waveform W2 are equal, and the waveforms of both overlap). Then, when the hold button 42A is pressed at an arbitrary time t1, the output mode is switched to the hold output. After being switched to the hold output, regardless of the change in the detected value of the force sensor 30 (refer to the waveform W2 between t1 and t2), the control signal (the control signal being output) corresponding to the detected value of the force sensor 30 at the time of switching to the hold output is continuously output from the output processing unit 57 in a held state without change (refer to the waveform W1 between t1 and t2).

[0037] Then, when the hold button 42A is pressed again at an arbitrary time t2 after that, the output mode is switched back to the normal output. As a result, the holding of the detected value of the force sensor 30 is released, and thereafter, the output value of the output processing unit 57 also changes and is output according to the change in the detected value of the force sensor 30 (refer to the waveform W1 after t2). In this way, the performer can hold the detected value of the force sensor 30 at an arbitrary timing.

[0038] As described above, in the tone control device 10 according to the first embodiment, when the performer tenses the guitar strap 210 during playing or the like to generate tension between the electric guitar 200 and the guitar strap 210, a control signal for controlling the tone according to the detected value detected by the force sensor 30 is output to the sound processor 100 side. Further, when the hold button 42A is pressed by the performer, the output mode of the control signal is switched between the normal output and the hold output. Therefore, the performer can switch the output mode of the control signal between the normal output and the hold output at an arbitrary timing. In this way, the tone control device 10 can easily maintain an arbitrary modulation amount without interfering with the performance of the electric guitar 200.

[0039] In addition, in the music control device 10, the hold button 42A, which is the second detection unit, is a switch that receives a switching operation by the performer, detects the movement of the switch due to the switching operation, and in the determination process, the control unit 50 determines that a predetermined condition is satisfied when the switch unit moves due to the switching operation. As a result, a specific configuration can be provided for the performer to switch the output mode of the control signal between the normal output and the hold output at an arbitrary timing without interfering with the performance of the electric guitar 200.

[0040] In addition, in the music control device 10, in the switching process, the control unit 50 switches the output mode of the control signal to the hold output on the condition that the output mode of the control signal in the output process is the normal output, and switches the output mode of the control signal to the normal output on the condition that the output mode of the control signal in the output process is the hold output. As a result, the performer can alternately switch between the normal output and the hold output by intentionally pressing down the hold button 42A.

[0041] In addition, the music control device 10 includes an LED 41 that notifies the performer of the output mode in the output process. In the switching process, the control unit 50 executes notification to the performer by causing the LED 41 to emit red light when the output mode is switched to the hold output, and has a notification processing unit 52 that executes notification to the performer by causing the LED 41 to emit green light when the output mode is switched to the normal output. Therefore, the performer can visually recognize whether the output mode is the normal output or the hold output during the performance.

[0042] In addition, the music control device 10 is capable of wireless communication with a receiving device 80 connected to a sound processor 100 that applies an effect to the music of the electric guitar 200. As a result, a specific configuration can be provided for realizing the performance system 1 using the music control device 10.

[0043] Also, the program 53A stored in the storage unit 53 of the control unit 50 causes the arithmetic processing unit 51 of the tone control device 10 including a force sensor 30 that detects the tension generated between the electric guitar 200 and the guitar strap 210, and a hold button 42A that detects a pressing-down operation in the tone control device 10, when a pressing-down operation is detected by the hold button 42A, to execute a determination process for determining whether or not the pressing-down operation satisfies a predetermined condition, and when it is determined in the determination process that the pressing-down operation satisfies the predetermined condition, a normal output for outputting a control signal according to the detection value detected by the force sensor 30 without holding the currently output control signal output, and a switching process for switching between the normal output and a hold output for holding the currently output control signal output without outputting a control signal according to the detection value. Thereby, it is possible to provide a specific process to be executed in the program in order to realize a configuration in which while the player controls the tone by intentionally pulling the guitar strap 210 or the like, the tone control mode can be switched by pressing down the hold button 42A.

[0044] (Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS. 6 to 8. In the description of the second embodiment, the description of the same configuration as that of the first embodiment will be omitted or simplified. The second embodiment is different from the first embodiment in that the tone control device 410 includes a gyro sensor 60, a part of the electrical configuration of the tone control device 410, and a predetermined condition for switching the control signal in the hold process.

[0045] As shown in FIG. 6, in the music sound control device 410 according to the second embodiment, a gyro sensor (second detection unit) 60 is housed inside the rear case 22 together with the force sensor 30. The gyro sensor 60 is small-sized, for example, a vibrating gyro sensor. The gyro sensor 60 detects the angular velocity of the rotational motion generated in the music sound control device 410 when the performer wearing the music sound control device 410 makes a rotational motion or when the performer performs an operation of rotating the music sound control device 410 itself. Further, the four button units 42 include a memory button 42B therein. The memory button 42B is a button for starting or ending a process of storing the switching waveform W, which will be described later, in the storage unit 53.

[0046] As shown in FIG. 7, the second input unit 55 in the control unit 50 is configured to take in a detection signal (detection value) output from the gyro sensor 60. Further, a switching waveform W is stored in the storage unit 53 of the control unit 50. The switching waveform W here is a waveform referred to as a determination material when the switching processing unit 59 of the control unit 50 executes the switching process, and is a waveform compared with the change in the detection value of the gyro sensor 60.

[0047] The switching waveform W is stored in the storage unit 53 in advance based on the operation of the performer. The performer can perform a rotational motion of the performer himself / herself (for example, an operation of rotating once counterclockwise) or an operation of rotating the music sound control device 410 itself (for example, an operation of rotating the music sound control device 410 once clockwise) as an operation for executing the switching process, or a combined operation of these operations, and store the change in the detection value of the gyro sensor 60 based on these operations in the storage unit 53 as the switching waveform W.

[0048] Referring to FIG. 8, the holding process executed by the music control device 410 according to the second embodiment will be described. In the holding process, first, a process of storing the switching waveform in the storage unit 53 is executed (step S208). Specifically, the control unit 50 gives an instruction to the performer to store the switching waveform in the storage unit 53 by changing the light emission mode of the LED 41 or by outputting voice from the built-in speaker. When the performer presses the memory button 42B in response to the instruction, the storage of the switching waveform W is started.

[0049] When the storage of the switching waveform W is started, the control unit 50 generates a change in the detection value of the gyro sensor 60 based on the performer's movement as a waveform by the performer performing the movement desired as an operation for executing the switching process. Then, when the performer presses the memory button 42B, the storage of the waveform of the change in the detection value ends. The control unit 50 stores the waveform generated from the start to the end of the storage of the waveform of the change in the detection value in the storage unit 53 as the switching waveform W. When the storage of the switching waveform W ends, the control unit 50 proceeds to step S210.

[0050] The processes in steps S210, S212, S214, and S216 in the holding process are the same as the processes in steps S10, S12, S14, and S16 in the first embodiment, respectively, and thus the description thereof is omitted. When the result in step S212 is NO, or when the result in step S214 is YES, or when the process in step S216 ends, the control unit 50 proceeds to step S217.

[0051] In step S217, the determination processing unit 58 of the control unit 50 determines whether there is a change in the detection value of the gyro sensor 60 from the detection value of the gyro sensor 60 input from the gyro sensor 60 to the second input unit 55 (determination processing). Specifically, the determination processing unit 58 determines whether there is detection of the angular velocity by the gyro sensor 60 and whether the detected angular velocity is not constant and has changed. If there is detection of the angular velocity by the gyro sensor 60 and the detected angular velocity has changed, the determination processing unit 58 determines that there is a change in the detection value (S217: YES) and proceeds to step S218. If there is no detection of the angular velocity by the gyro sensor 60 or the detected angular velocity is constant, the determination processing unit 58 determines that there is no change in the detection value (S217: NO) and proceeds to step S224.

[0052] In step S218, the determination processing unit 58 determines whether the change in the detection value of the gyro sensor 60 conforms to the switching waveform W. Specifically, the determination processing unit 58 reads the switching waveform W from the storage unit 53 and compares the read switching waveform W with the waveform of the change in the detection value of the gyro sensor 60. If the waveform of the change in the detection value substantially matches the switching waveform W (if the waveform of the change in the detection value almost overlaps the switching waveform W), the determination processing unit 58 determines that it conforms to the switching waveform W and satisfies a predetermined condition (S218: YES) and proceeds to step S220. If the waveform of the change in the detection value does not substantially match the switching waveform W, the determination processing unit 58 determines that it does not conform to the switching waveform W and does not satisfy a predetermined condition (S218: NO) and proceeds to step S224.

[0053] The processes of steps S220, S222, S224, and S226 in the holding process are the same as the processes of steps S20, S22, S24, and S26 in the first embodiment, respectively, and thus the description is omitted. In the sound control device 410 according to the second embodiment, the holding process is executed as described above.

[0054] As described above, in the musical sound control device 410 according to the second embodiment, when a performer tenses the guitar strap 210 during performance or the like to generate tension between the electric guitar 200 and the guitar strap 210, a control signal for controlling the musical sound according to the detection value detected by the force sensor 30 is output to the sound processor 100 side. Further, when the performer performs an operation such as a predetermined rotational movement and the detection value by the gyro sensor 60 changes, and when the change in the detection value conforms to the switching waveform W, the output mode of the control signal switches between normal output and hold output. For this reason, the performer can switch the output mode of the control signal between normal output and hold output at an arbitrary timing. In this way, the musical sound control device 410 can easily maintain an arbitrary modulation amount without interfering with the performance of the electric guitar 200.

[0055] Also, in the musical sound control device 410, the gyro sensor 60, which is the second detection unit, is a sensor that detects the angular velocity of the movement due to the rotational movement of the musical sound control device 410, and in the determination process, the determination processing unit 58 determines that a predetermined condition is satisfied when the change in the angular velocity detected by the gyro sensor 60 is a predetermined change. Thereby, it is possible to provide a specific configuration for the performer to switch the output mode of the control signal between normal output and hold output at an arbitrary timing without interfering with the performance of the electric guitar 200.

[0056] Note that the embodiments described above are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and its equivalent scope.

[0057] For example, in the first embodiment, the tone control device may have another switching device such as a slide switch instead of the holding button. Also, for example, in the second embodiment, the tone control device may have an acceleration sensor instead of the gyro sensor. In this case, the acceleration sensor detects the acceleration of the acceleration motion generated in the tone control device when the performer performs an operation to accelerate the tone control device. Also, in this case, at the start of the holding process, the performer stores, in the storage unit, a change in the detection value of the acceleration sensor based on the performer's operation as a switching waveform. Then, when the waveform of the change in the detection value of the acceleration sensor substantially matches the switching waveform stored in the storage unit, the switching process unit of the control unit executes the switching process.

Explanation of Reference Numerals

[0058] 1: Performance system 10: Tone control device 10: Tone control device 11: Connection button section 12: Connection ring section 15: Strap pin 20: Case 21: Front case 22: Rear case 40: Substrate 41: LED 42: Button section 50: Control unit 51: Arithmetic processing unit 52: Notification processing unit 53: Storage unit 54: First input unit 55: Second input unit 56: Instruction reception unit 57: Output processing unit 58: Judgment processing unit 59: Switching processing unit 60: Gyro sensor 80: Receiving device 140: Control signal input unit 200: Electric guitar 210: Guitar strap 300: Guitar amplifier 410: Tone control device W, W1, W2: Waveform

Claims

1. a first detection unit that detects the tension generated between the musical instrument and the musical instrument holder; a second detection unit that detects the movement of at least a part of the sound control device; a control unit, comprising: the control unit, when the movement is detected by the second detection unit, a determination process for determining whether the movement satisfies a predetermined condition; when it is determined in the determination process that the movement satisfies the predetermined condition, a first mode of outputting the signal according to the detection value detected by the first detection unit without holding the currently output signal output, and a second mode of holding the currently output signal output without outputting the signal according to the detection value; and a switching process for switching between them; A sound control device characterized by the above.

2. The second detection unit is a switch that receives a switching operation by a user, and detects the movement of the switch by the switching operation, in the determination process, the control unit determines that the predetermined condition is satisfied when the switch moves due to the switching operation. The sound control device according to claim 1, characterized in that.

3. The second detection unit is a sensor that detects the angular velocity of the movement due to the rotational movement of the sound control device or the acceleration of the movement due to the acceleration movement of the sound control device, in the determination process, the control unit determines that the predetermined condition is satisfied when the change in the angular velocity or the change in the acceleration detected by the second detection unit is a predetermined change. The sound control device according to claim 1, characterized in that.

4. in the switching process, the control unit switches the signal output mode to the second mode on the condition that the signal output mode in the output process is the first mode, and switches the signal output mode to the first mode on the condition that the signal output mode in the output process is the second mode. The sound control device according to any one of claims 1 to 3, characterized in that.

5. The output mode in the output process is provided with a notification unit that notifies the user, in the switching process, the control unit has a notification processing unit that executes notification by the notification unit in a first notification mode when the output mode is switched to the second mode, and executes notification by the notification unit in a second notification mode when the output mode is switched to the first mode. The sound control device according to any one of claims 1 to 4, characterized in that.

6. It is capable of wireless communication with a receiving device connected to an effect device that imparts an effect to the musical sound of the musical instrument. The musical sound control device according to any one of claims 1 to 5, characterized in that.

7. In a computer of the musical sound control device, comprising: a first detection unit that detects a tension generated between a musical instrument and a musical instrument holder; and a second detection unit that detects at least a part of the movement of the musical sound control device. When the movement is detected by the second detection unit, a determination process for determining whether or not the movement satisfies a predetermined condition. When it is determined in the determination process that the movement satisfies the predetermined condition, without holding the currently output signal output, a first mode of outputting the signal according to the detection value detected by the first detection unit, and a second mode of holding the currently output signal output without outputting a signal according to the detection value. A switching process for switching between the two modes is executed. A musical sound control program, characterized in that.

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