JP2017062358A - Sound controller, method, program, and electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound controller, a method, a program, and an electronic musical instrument for controlling parameters of a sound based upon operators such that a sounding operation for a natural percussion instrument sound from a struck body and a sounding operation for the electronic musical instrument sound from a sound source circuit can naturally coexist.SOLUTION: After the point 201 of time when an operator strikes on an object, the absolute value of an output value of an angular velocity abruptly decreases toward zero as a reaction to the striking. Then the operator enters a swung-up state as a reaction to the striking and the output value of the angular velocity increases in the positive direction. Here, a natural sound of a percussion instrument is generated at the moment the operator strikes on the object. In this case, a musical sound controller performs control not to instruct its internal sound source part to generate a musical sound at timing 202 of detecting the stopping of operation of the operator. Consequently, a state in which an electronic musical instrument sound is delayed and generated after a natural sound of the percussion instrument is generated can be avoided.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a sound control device, a method, a program, and an electronic musical instrument that control sound parameters based on an operator.

  2. Description of the Related Art Conventionally, there has been proposed a performance device that generates an electronic sound corresponding to a performance operation when a performance performance of the performer is detected. For example, a performance device (so-called air stick or air drum) that emits an electronic musical instrument sound only with a stick-like operation element is known. In such a performance device, a sensor is provided on the stick-shaped operation element, and the player holds the operation element by hand and shakes the sensor so that the sensor detects the performance operation and causes the sound source circuit to perform a sounding operation. Sound electronic musical instrument sounds. According to such a performance device, a desired electronic musical instrument sound can be generated without the need for an actual musical instrument, so that the performance can be enjoyed without being restricted by the performance place or performance space. For example, Patent Document 1 discloses a performance device with low power consumption that generates a musical tone based on the position coordinates in the imaging space of the light emitting unit of the performance operator.

  On the other hand, a musical sound control device that controls the sound generation of a musical sound in a sound source circuit by actually hitting a desk, a cushion, or the like is known. For example, Patent Document 2 discloses a technology that enables sound of an electronic musical instrument with less noise to be produced at a volume corresponding to the strength of the hitting by hitting an object such as a desk or a cushion. Further, for example, Patent Document 3 discloses a technology that enables various musical tone parameters (for example, timbre) of an electronic musical instrument sound generated by a sound source circuit according to a difference in an object (desk, cushion, etc.) with a simple sensor configuration. It is disclosed.

  The above-mentioned prior art is based on the premise that a sound is emitted by shaking a stick etc. in the air and does not assume hitting a hitting object, or a desk or cushion that does not make sense as an instrument sound by itself. It was designed to control the musical sound produced by detecting the change in acceleration when hit.

Japanese Patent No. 5573899 JP 2014-126597 A JP 2014-62997 A

  Here, the conventional drum or drum itself is made by making the hit object into a conventional drum or drum and striking it with a stick-like controller or by simply shaking the air stick without hitting it. There is a need to produce a combination of the sound of natural musical instrument sounds and electronic musical instrument sounds from a sound source circuit. However, in the above-described prior art, since the sound generator circuit is instructed to generate sound after the operator actually strikes the object or detects the gesture to be struck, the object such as a drum or drum is hit to perform. If this is done, the sound generation timing of the electronic musical instrument sound from the tone generator circuit may be affected by the sound from the drum or drum, due to a slight delay in the wireless communication processing between the controller and the musical tone control circuit and the digital signal processing in the musical tone control circuit. There is a problem that the sound of the sound of the natural musical instrument is slightly delayed with respect to the sounding timing of the natural musical instrument, and the sound of both instruments is unnatural.

  Accordingly, an object of the present invention is to make it possible for a natural percussion instrument sound generation operation from an impacted object and an electronic musical instrument sound generation operation from a sound source circuit to coexist naturally.

  In an example of the aspect, the first operation for determining whether or not the operation of the operation device detected by the sensor is the first operation of shaking the operation device, and the operation device after determining the first operation. A detection process for detecting the stop of the first operation by the sound, a sound generation instruction process for instructing the sound source to generate a sound at the timing of detecting the stop of the first operation after detecting the first operation, and a sensor Before detecting the stop of the first action by the manipulator, the second discrimination processing for discriminating the collision between the manipulator and another object, and the stop of the first action when the collision is judged And a control unit that performs control so as not to issue an instruction to generate a musical tone at the detection timing.

  According to the present invention, a natural percussion instrument sound generation operation from a hit object and an electronic musical instrument sound generation operation from a sound source circuit can naturally coexist.

It is the figure which showed the example of the external appearance of the object to be hit | hung with the operation element by this embodiment, a musical tone control apparatus. It is a figure which shows the example of a waveform of the output value of an angular velocity sensor when an operation element hits an object. It is a figure which shows the example of a waveform of the output value of an angular velocity sensor when an operation element is shaken without hitting an object. It is a figure which shows the hardware structural example of the operation element which concerns on this embodiment. It is a figure which shows the hardware structural example of the musical tone control apparatus which concerns on this embodiment. It is a flowchart which shows the example of control processing of the musical tone control apparatus which concerns on this embodiment. It is explanatory drawing of the sound generation cancellation operation | movement when an operation element hits an object. It is explanatory drawing of the sound generation instruction | indication operation | movement when an operation element is shaken without hitting an object. It is a figure which shows the example of a waveform of the output value of an acceleration sensor when an operation element hits an object.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is a view showing appearance examples of the operation element 1, the musical sound control device 2, and the object 3 according to the present embodiment. The performer, for example, grasps the side of the stick-like operation element 1 shown as A in the figure and shakes the operation element 1 to strike an object 3 such as a drum or a drum, or operates the object 3 without hitting it. A percussion instrument performance operation is performed by performing only the operation of shaking the child 1.

  For example, an angular velocity sensor 10 is built in the operator 1. The angular velocity sensor 10 is generated when the player swings the operation element 1, and the object 3 rotates in the direction C in the figure with the rotation axis B as a reference (the direction to swing down is a negative direction and the direction to swing up is a positive direction). Detects the angular velocity of the motion to be performed (unit: radians / second). The output value of the angular velocity of the angular velocity sensor 10 is transmitted to the musical sound control device 2 by wireless communication schematically shown as 4 in the figure.

  The musical tone control device 2 is based on, for example, the output data of the angular velocity sensor 10 transmitted from the operation element 1, and the first operation state or operation element 1 in which the operation element 1 strikes the object 3 by the performance operation of the performer. Detects a second performance state that is swung without hitting the object 3.

  FIG. 2 is a diagram illustrating a waveform example of an output value of the angular velocity sensor when the operator 1 strikes the object 3 by the player. First, when the performer swings down the operation element 1 from the stationary state, the absolute value of the angular velocity output value increases from the zero state to the negative direction as shown in the period T1. Then, at the instant 201, the absolute value of the output value of the angular velocity suddenly decreases toward zero due to the reaction of the impact at the moment when the operating element 1 strikes the object 3. Thereafter, the manipulator 1 is swung up by the recoil of the impact, and the output value of the angular velocity increases in the positive direction as shown in the periods T1 to T2. Thereafter, as the player performs a swinging down operation of the operating element 1, the output value of the angular velocity returns from the positive maximum value to zero as shown in the period T2 to T3, and the absolute value increases again in the negative direction. Go. Then, at the moment 201, the absolute value of the output value of the angular velocity suddenly decreases toward zero due to the reaction of the impact at the moment when the operating element 1 strikes the object 3 again. Thereafter, in the same manner as described above, the operating element 1 is swung up by the reaction of the impact, and the output value of the angular velocity increases in the positive direction as shown in the period T4. As described above, when the operating element 1 hits the object 3, the output value of the angular velocity suddenly goes to zero immediately after the change direction changes from the negative direction to the positive direction at the hitting point 201. Return to increase in the positive direction.

  In this case, the natural sound of the percussion instrument constituted by the object 3 is generated by the vibration of the object 3 at the moment when the operator 1 hits the object 3. In the present embodiment, when the operating element 1 strikes the object 3 in this way and the natural sound of the percussion instrument is generated from the object 3, the output value of the angular velocity returns to near zero, that is, the operation of the operating element 1 At the time point 202 in FIG. 2 where the stop of the sound is detected, the musical sound control device 2 controls the sound source unit incorporated therein so as not to instruct the sound generation of the musical sound. As a result, it is possible to avoid a state in which the electronic musical instrument sound is generated after the natural sound of the percussion instrument is generated.

  On the other hand, FIG. 3 is a diagram illustrating a waveform example of an output value of the angular velocity sensor when the operation element 1 is swung without hitting the object 3. As in the case of FIG. 2, when the performer swings down the controller 1 from the stationary state, the absolute value of the angular velocity output value increases from zero to the negative direction as shown in the period T1. Go. Then, if the player changes the movement from the direction of swinging down the operation element 1 to the direction of swinging up without hitting the object 3, there is no reaction due to the hit of the object 3, so that the angular velocity is shown as shown in the period T1 to T2. The absolute value of the output value decreases relatively slowly toward zero and then increases in the positive direction. Thereafter, as the player performs a swinging down operation of the operating element 1, the output value of the angular velocity returns from the positive maximum value to zero as shown in the period T2 to T3, and the absolute value increases again in the negative direction. Go. Then, when the player changes the movement from the direction of swinging down the operating element 1 again without hitting the object 3, the absolute value of the output value of the angular velocity is again compared as shown in the period T3 to T4. It gradually decreases toward zero and then increases in the positive direction. As described above, when only the operation in which the operating element 1 is swung without hitting the object 3 is performed, the output value of the angular velocity is relatively shortly after the change direction is changed from the negative direction to the positive direction. Slowly return to zero and turn positive.

  In this case, since the operation element 1 does not hit the object 3, the natural sound of the percussion instrument constituted by the object 3 is not generated. In the present embodiment, in this case, at the time point 301 in FIG. 3 where the output value of the angular velocity returns to the threshold value Th near zero, that is, the stop of the operation of the operation element 1 is detected, the musical sound control device 2 Is controlled so as to instruct the tone generator unit to generate a musical tone. Thereby, only the electronic musical instrument sound is produced without producing the natural sound of the percussion instrument.

  As described above, in this embodiment, when the performer strikes the object 3 with the operation element 1, only the natural sound of the percussion instrument constituted by the object 3 is generated, and the operation element 1 is moved without hitting the object 3. When only the swinging operation is performed, the electronic musical instrument sound can be controlled to be generated from the sound source unit built in the musical tone control device 2 at the timing equivalent to the percussion, thereby realizing various and natural percussion instrument performances. It becomes possible.

  In this embodiment, as shown in FIGS. 2 and 3, the musical sound control device 2 is a speed at which the output value of the angular velocity returns toward zero immediately after the change direction of the output value changes, for example, from a negative direction to a positive direction. The first performance state in which the operating element 1 strikes the object 3 and the second performance in which the operating element 1 is swung without hitting the object 3 Detect by distinguishing the state. Further, the musical sound control device 2 detects the timing (time point 202 in FIG. 2 or time point 301 in FIG. 3) at which the stop of the operation of the operation element 1 is detected based on the output data of the angular velocity sensor 10, for example. When the musical sound control device 2 detects the second performance state, the musical sound control device 2 then instructs the internal sound generator unit to generate a musical sound at the time when the timing is detected, and detects the first performance state. In this case, control is performed so as not to instruct the sound source unit to generate a musical tone when the timing is detected thereafter.

  The sensor for detecting the movement of the operation element 1 is not limited to the angular velocity sensor 10 in FIG. 1, and for example, a three-axis acceleration sensor, a magnetic sensor, or the like may be mounted on the operation element 1.

  FIG. 4 is a diagram illustrating a hardware configuration example of the operation element 1 of FIG. 1 according to the present embodiment that realizes the above-described operation. The controller 1 includes a CPU 401 (central processing unit), a ROM (Read Only Memory) 402, a RAM (Random Access Memory) 403, an attitude sensor 404, an I / F (interface) device 405, and a wireless communication device. 406.

  The CPU 401 performs overall control of the operation element 1 and transmits, for example, the sensor value output from the attitude sensor 404 to the musical sound control device 2 in FIG. 1 via the I / F device 405 and the wireless communication device 406. Execute control to

  The ROM 402 stores a processing program for processing executed by the CPU 11. The RAM 403 temporarily stores and holds various data used in the processing program.

  The attitude sensor 404 is a variety of sensors for detecting the movement of the operation element 1 and outputs a predetermined sensor value. Here, as the sensors constituting the attitude sensor 404, for example, an angular velocity sensor 404-1 (corresponding to the angular velocity sensor 10 in FIG. 1), an acceleration sensor 404-2, a magnetic sensor 404-3, and the like can be used.

  As the angular velocity sensor 404-1, for example, a sensor provided with a gyroscope can be used. The angular velocity sensor 10 outputs a rotation angle C around the B axis of the operation element 1 shown in FIG. The rotation angle C corresponds to a performance operation in which the performer swings down or swings up the operation element 1 with respect to the object 3 in FIG.

  As the acceleration sensor 404-2, for example, a three-axis sensor that outputs acceleration generated in each of the three axial directions of the X axis, the Y axis, and the Z axis can be used. For example, the axis that coincides with the longitudinal axis of the operation element 1 in FIG. 1 is defined as the Y axis, and the axis that is parallel to the substrate (not shown) on which the acceleration sensor is disposed and is orthogonal to the Y axis is defined as the X axis. The axis orthogonal to the X axis and the Y axis can be the Z axis. At this time, the acceleration sensor 404-2 may acquire the acceleration of each component of the X axis, the Y axis, and the Z axis, and may calculate a sensor composite value obtained by combining the respective accelerations. Here, the performer holds one end (base side) of the operation element 1 and performs a swing-up operation or a swing-down operation centering on the wrist or the like, thereby causing the operation element 1 to rotate. Then, when the operating element 1 is stationary, the acceleration sensor 404-2 calculates a value corresponding to the gravitational acceleration 1G as a sensor composite value, and when the operating element 1 is rotating, The acceleration sensor 404-2 calculates a value larger than the gravitational acceleration 1G as a sensor composite value. The sensor composite value is obtained, for example, by calculating the square root of the sum of the squares of the accelerations of the X-axis, Y-axis, and Z-axis components.

  Further, as the magnetic sensor 404-3, a sensor that can output magnetic sensor values in the three-axis directions of the X axis, the Y axis, and the Z axis similar to the above can be used. From such a magnetic sensor, a vector indicating north (magnetic north) by a magnet is output for each of the X-axis direction, the Y-axis direction, and the Z-axis direction. Since the component in each axial direction that is output differs depending on the attitude (orientation) of the operation element 1, the CPU 401 calculates the roll angle of the operation element 1, the rotation angle in the X-axis direction, and the Z-axis direction from these components. be able to.

  The posture sensor 404 uses such various sensors 404-1, 404-2, 404-3, etc. to detect the movement of the operation element 1 held by the performer, and outputs each output value to the musical tone of FIG. It transmits to the control apparatus 2.

  The wireless communication device 406 transmits each output data received from each sensor 404-1, 404-2, 404-3 via the CPU 401 and the I / F device 405 to the musical tone control device 2 of FIG. In this case, the wireless communication may be performed by any method, and WiFi communication, infrared communication, Bluetooth communication, or the like can be employed.

  FIG. 5 is a diagram illustrating a hardware configuration example of the musical tone control apparatus 2 of FIG. 1 according to the present embodiment. The musical sound control device 2 has a configuration in which a CPU 501, a ROM 502, a RAM 503, a sound source unit 504, an I / F device 505, a display unit 507, and an input unit 508 are connected to each other via a system bus 509. . A wireless communication device 506 is connected to the I / F device 505. An audio circuit 510 is connected to the sound source unit 504, and a speaker 511 is connected to the audio circuit 510.

  The wireless communication device 506 is connected to the sensors 404-1, 404-2, 404-3 (hereinafter referred to as “angular velocity sensor 404-1, etc.”) of FIG. 2 from the wireless communication device 406 in the operation element 1 of FIG. Receive the output data, and store them in the RAM 503 via the I / F device 505.

  The CPU 501 executes overall control of the musical tone control device 2 and executes the above-described processes based on output data from the angular velocity sensor 404-1 and the like stored in the RAM 503.

  The ROM 502 stores a control processing program executed by the CPU 31. The RAM 33 temporarily stores output data from the angular velocity sensor 404-1 received from the operation element 1 and various work data generated during the execution of the program.

  The input unit 508 particularly receives input information via a switch (not shown). The input information includes, for example, a change in the volume and tone color of a musical tone to be generated, switching of display on the display unit 507, and the like.

  The display unit 507 displays the sound volume, tone color information, etc. to be generated on a liquid crystal display (not shown).

  The sound source unit 504 generates musical tone data of a percussion instrument sound designated via the input unit 508 from, for example, a waveform ROM built in the sound source unit 504 in accordance with a sound generation instruction from the CPU 501, and converts the musical tone data into an analog musical tone signal. And output to the audio circuit 510. The audio circuit 510 amplifies the analog musical sound signal and emits the sound from the speaker 511.

  FIG. 6 is a flowchart showing an example of control processing of the musical tone control apparatus 2 having the configuration of FIG. In FIG. 5, the control process is realized as an operation in which the CPU 501 executes the control program stored in the ROM 502 while using the RAM 503 as a work memory. This control program can be acquired via a portable recording medium (not shown) or a network. FIG. 7 is an explanatory diagram of the sound generation canceling operation when the operator 1 hits the object 3 in FIG. 1, and corresponds to the waveform example described in FIG. Further, FIG. 8 is an explanatory diagram of a sound generation instruction operation when the operation element 1 is swung without hitting the object 3, and corresponds to the waveform example described in FIG. The processing of the flowchart of FIG. 6 will be described below using the explanatory diagrams of FIGS. The following description is an example when the output of the attitude sensor 404 in the operating element 1 is output data from the angular velocity sensor 404-1.

  First, the CPU 501 initializes the storage contents of the RAM 503, the sound source unit 504, and the like (step S601).

  Next, the CPU 501 sequentially monitors the output value of the angular velocity sensor 404-1 received by the wireless communication device 506 and held in the RAM 503 (step S 602), and the output value becomes the return value of the angular velocity sensor 404-1. The process of determining whether or not the process has been reached (step S603) is repeatedly executed (the determination of step S602 → S603 is NO → repetition of the process of S602). In this determination process, it is determined whether or not the output value of the angular velocity sensor 404-1 has started to change in the negative direction from a state near zero and then changed from a change in the negative direction to a change in the positive direction. It is processing. For example, when the operating element 1 strikes the object 3, it is the time point 701 in the swing-down period T <b> 1 in FIG. 7A, which is the moment when the operating element 1 strikes the object 3. Further, for example, when the operating element 1 does not hit the object 3, it is the time point 801 in the swing-down period T1 in FIG. Specifically, based on the output data of the angular velocity sensor 404-1 stored in the ring buffer on the RAM 503, the current output value is changed from the previous output value to the previous output value. It is determined when the output value is switched to an increasing state. Note that an appropriate noise removal process may be executed during the determination process.

  When the determination in step S603 is YES, the CPU 501 monitors the change amount b of the output value of the angular velocity sensor 404-1 during one sampling period of sensor output monitoring (step S604), and the change amount b is the angular velocity sensor 404-1. It is determined whether or not the amount of mutation n (threshold value) has been exceeded. This is because the degree of change in the output value of the angular velocity sensor 404-1 for a predetermined period after the time point when the output change direction of the angular velocity sensor 404-1 is reversed is measured, and whether or not the degree of change exceeds a predetermined threshold value. It is a process which determines. Strictly speaking, as shown in FIG. 7B or FIG. 8B, the degree of change is a value obtained by dividing the change amount b of the output value by the monitoring period a that caused the change. Assuming that the period a is one sampling period Ts, this is a fixed value. Therefore, it is only necessary to determine whether or not the amount of change b exceeds a predetermined displacement amount n (threshold value).

  As described above with reference to FIG. 2, as shown in FIG. 7A, when the operator 1 hits the object 3, the output value of the angular velocity sensor 404-1 Immediately after the change direction changes from the negative direction to the positive direction, it suddenly returns toward zero and starts to increase in the positive direction. Therefore, the output value change amount b in the one sampling period Ts immediately after the impact time point 701 becomes a large value and exceeds the threshold displacement amount n, and the determination in step S605 is YES. In this case, at the time 702 in FIG. 7 where the stop of the operation of the operation element 1 is detected, the CPU 501 controls the sound source unit 504 in FIG. 5 so as not to instruct the sound generation. In the present embodiment, as a precaution process, the CPU 501 instructs the sound source unit 504 to turn off notes (silence). As a result, it is possible to avoid a state in which the electronic musical instrument sound is generated after the natural sound of the percussion instrument is generated at the time point 701.

  On the other hand, as described above with reference to FIG. 3, as shown in FIG. 8A, when the operator 1 does not hit the object 3, the output value of the angular velocity sensor 404-1 borders on the change point 801. Immediately after the change direction changes from the negative direction to the positive direction, it returns to zero relatively slowly and starts to increase in the positive direction. Accordingly, the change amount b of the output value in one sampling period Ts immediately after the change time 801 is a small value and does not exceed the displacement amount n which is a threshold value, and the determination in step S605 is NO. In this case, the CPU 501 further monitors the output value of the angular velocity sensor 404-1 (step S 607), and determines whether or not the output value has reached the sound generation threshold Th of FIG. The process of determining whether or not the timing at which the stop of the operation is detected (for example, the timing 802 in FIG. 8) has been repeated (step S608) is repeatedly executed (the determination of step S607 → S608 is NO → repetition of the process of S607). .

  When the determination in step S608 is YES, the CPU 501 instructs the sound source unit 504 to turn on the note (step S609). Thus, when the natural sound of the percussion instrument is not pronounced, only the electronic musical instrument sound can be produced from the sound source unit 504 via the audio circuit 510 and the speaker 511 by the operation of shaking the operation element 1. After the process of step S609, the CPU 501 returns to the monitoring process of steps S602 and S603.

  The embodiment described above is a processing example based on the output data of the angular velocity sensor 404-1 in the operation element 1, but even if the processing based on the output data of the acceleration sensor 404-2 and the magnetic sensor 404-3 is executed. Good. Alternatively, the processing may be performed by combining the output data of these three sensors. FIG. 9 is a diagram illustrating a waveform example of an output value of the acceleration sensor 404-2 when the operator 1 hits the object 3. Also in this case, when the performer swings down the operation member 1 from the stationary state, the absolute value of the acceleration output value increases from the zero state to the negative direction as shown in the period T1. The absolute value of the output value of the acceleration abruptly decreases toward zero due to the reaction of the impact at the moment when the operating element 1 strikes the object 3 at the time 901. Thereafter, the manipulator 1 is swung up by the recoil of the impact, and the output value of the acceleration increases in the positive direction as shown in the periods T1 to T2. Thereafter, the player's swinging down of the operation element 1 causes the acceleration output value to return from the positive maximum value to zero as shown in the period T2 to T3, and then the absolute value increases again in the negative direction. Go. Therefore, it is possible to detect that the operator 1 has hit the object 3 by capturing this sudden change. The same applies to the magnetic sensor 404-3.

  As described above, according to the present embodiment, the sound source is divided into the natural percussion instrument sound and the electronic instrument sound when the operation element 1 is swung and struck, so that a performance without a sense of incongruity can be performed. By playing an acoustic drum or an electronic drum, a hybrid performance without delay becomes possible.

Regarding the above embodiment, the following additional notes are disclosed.
(Appendix 1)
A first determination process for determining whether or not the operation of the operating element detected by the sensor is a first operation of shaking the operating element;
After determining the first operation, a detection process for detecting the stop of the first operation by the operator,
A sound generation instruction process for instructing the sound source to generate sound at the timing of detecting the stop of the first operation after detecting the first operation;
A second determination process for determining a collision between the operation element and another object before the sensor detects the stop of the first operation by the operation element;
If the collision is determined, a control process for performing control so as not to issue a tone generation instruction for the musical tone at the timing of detection of the stop of the first operation;
The sound control apparatus which comprises the processing part which performs.
(Appendix 2)
The sensor is at least one of an angular velocity sensor and an acceleration sensor,
In the detection process, the processing unit reverses the sign of the output value of the sensor after the output value of the sensor becomes equal to or higher than a first threshold, and then the output value of the sensor changes the sign after the reverse rotation. Performing a process of detecting a timing at which the second threshold value is reached as a timing of stopping the first operation by the operator,
As the second determination process, the change degree of the output value of the sensor is measured after the time when the output code of the sensor is reversed, and it is determined whether or not the change degree is larger than a predetermined threshold value. The musical tone control apparatus according to supplementary note 1, wherein when it is large, a process of determining a collision between the operation element and another object is executed.
(Appendix 3)
In the second determination process, the processing unit determines, as the change degree, a difference between an output value of the sensor at a time point when an output code of the sensor is reversed and an output value of the sensor at a time point subsequent to the time point. The sound control device according to appendix 2, which measures.
(Appendix 4)
A sound control method used in a sound control apparatus including a processing unit, wherein the processing unit is
Determining whether the operation of the operating element detected by the sensor is the first operation of shaking the operating element;
After determining the first operation, detecting the stop of the first operation by the operator,
After detecting the first motion, at the timing of detecting the stop of the first motion, instruct the sound source to sound,
Before the sensor detects the stop of the first operation by the operating element, it determines a collision between the operating element and another object,
A sound control method for performing control so as not to issue a tone generation instruction for the musical sound at the timing of detecting the stop of the first operation when the collision is determined.
(Appendix 5)
In a computer used as a sound control device,
Determining whether the operation of the operating element detected by the sensor is a first operation of shaking the operating element;
Detecting the stop of the first operation by the operator after determining the first operation;
Instructing the sound source to generate sound at the timing of detecting the stop of the first operation after detecting the first operation;
Determining a collision between the operation element and another object before the sensor detects the stop of the first operation by the operation element;
If the collision is determined, a step of performing control so as not to issue the tone generation instruction at the timing of detecting the stop of the first operation;
A program that executes
(Appendix 6)
The sound control device according to any one of appendices 1 to 4,
A sound source device that generates a musical sound based on a sound generation instruction from the sound control device;
Electronic musical instrument with

DESCRIPTION OF SYMBOLS 1 Operating element 2 Musical sound control apparatus 3 Object 4 Wireless communication 10, 404-1 Angular velocity sensor 401,501 CPU
402, 502 ROM
403, 503 RAM
404 Attitude sensor 404-1 Angular velocity sensor 404-2 Acceleration sensor 404-3 Magnetic sensor 405, 505 I / F device 406, 506 Wireless communication device 504 Sound source unit 507 Display unit 508 Input unit 509 System bus 510 Audio circuit 511 Speaker

Claims (6)

A first determination process for determining whether or not the operation of the operating element detected by the sensor is a first operation of shaking the operating element;
After determining the first operation, a detection process for detecting the stop of the first operation by the operator,
A sound generation instruction process for instructing the sound source to generate sound at the timing of detecting the stop of the first operation after detecting the first operation;
A second determination process for determining a collision between the operation element and another object before the sensor detects the stop of the first operation by the operation element;
If the collision is determined, a control process for performing control so as not to issue a tone generation instruction for the musical tone at the timing of detection of the stop of the first operation;
The sound control apparatus which comprises the processing part which performs. The sensor is at least one of an angular velocity sensor and an acceleration sensor,
In the detection process, the processing unit reverses the sign of the output value of the sensor after the output value of the sensor becomes equal to or higher than a first threshold, and then the output value of the sensor changes the sign after the reverse rotation. Performing a process of detecting a timing at which the second threshold value is reached as a timing of stopping the first operation by the operator,
As the second determination process, the change degree of the output value of the sensor is measured after the time when the output code of the sensor is reversed, and it is determined whether or not the change degree is larger than a predetermined threshold value. The musical tone control apparatus according to claim 1, wherein when it is large, a process for determining a collision between the operating element and another object is executed.   In the second determination process, the processing unit determines, as the change degree, a difference between an output value of the sensor at a time point when an output code of the sensor is reversed and an output value of the sensor at a time point subsequent to the time point. The sound control device according to claim 2 which measures. A sound control method used in a sound control apparatus including a processing unit, wherein the processing unit is
Determining whether the operation of the operating element detected by the sensor is the first operation of shaking the operating element;
After determining the first operation, detecting the stop of the first operation by the operator,
After detecting the first motion, at the timing of detecting the stop of the first motion, instruct the sound source to sound,
Before the sensor detects the stop of the first operation by the operating element, it determines a collision between the operating element and another object,
A sound control method for performing control so as not to issue a tone generation instruction for the musical sound at the timing of detecting the stop of the first operation when the collision is determined. In a computer used as a sound control device,
Determining whether the operation of the operating element detected by the sensor is a first operation of shaking the operating element;
Detecting the stop of the first operation by the operator after determining the first operation;
Instructing the sound source to generate sound at the timing of detecting the stop of the first operation after detecting the first operation;
Determining a collision between the operation element and another object before the sensor detects the stop of the first operation by the operation element;
If the collision is determined, a step of performing control so as not to issue the tone generation instruction at the timing of detecting the stop of the first operation;
A program that executes The sound control device according to any one of claims 1 to 4,
A sound source device that generates a musical sound based on a sound generation instruction from the sound control device;
Electronic musical instrument with