JP2008256801A - Musical instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily operate a musical instrument with small force and to output a sound of a natural musical instrument. <P>SOLUTION: A pad cup 23C provided apart from a lever part 23A is driven by a motor 103A. A sensor fitted to a portion of the lever part 23A that a player touches detects pressure when the player touches an operator. A control unit 101 controls the motor 103A according to the pressure detected by the sensor and then the pad cup 23C provided apart from the lever part 23A operates to open and close a sound hole 23D, thereby outputting a musical sound. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for assisting performance of a musical instrument.

For example, in a saxophone, when a key for performing music is operated, a tampon plate is operated via a link mechanism to open and close a sound hole. However, since a certain amount of force is required to move the tampo dish via the link mechanism by operating the keys, it is difficult for people with weak power to operate the keys and enjoy playing. is there. On the other hand, there is an electronic wind instrument disclosed in Patent Document 1 as an electronic musical instrument simulating a saxophone. This electronic wind instrument can change the distance between the key and the tube according to the user's operation, detects the distance between the key and the tube, and adjusts the tone generation characteristics of the tone according to the detected distance. Control. Since this electronic wind instrument does not have a link mechanism, a tampon plate, or the like as compared with a general wind instrument, even a weak person can easily move a key and enjoy playing.
JP-A-8-305362

  By the way, in the electronic musical instrument disclosed in Patent Document 1, the tone and pitch of the sound to be output are determined according to the operated key and the distance between the key and the tubular body, and the determined sound is electronic. Is output automatically. The key operation is similar to that of a general wind instrument, but the output sound is electronic, so there is a problem that the sound of a natural instrument cannot be enjoyed.

  The present invention has been made under the background described above, and an object of the present invention is to provide a technique that can easily operate a musical instrument with a small force and that can output a sound of a natural musical instrument. It is in.

  In order to solve the above-described problems, the present invention provides a musical instrument operator, a sound generation unit corresponding to the musical instrument operator, and a member that causes the sound generation unit to generate sound and is provided in the musical instrument separately from the musical instrument operator. A sound generating member, a detecting means for detecting an action on the musical instrument operator, a driving means for driving a sound generating member corresponding to the musical instrument operator, and the driving means based on the action detected by the detecting means There is provided a musical instrument having control means for controlling the sound.

  In this configuration, the detection means detects the magnitude of the force applied to the instrument operator, and the control means controls the drive means according to the magnitude of the force detected by the detection means. You may control.

  Further, in this configuration, the instrument operator is rotatable about a rotation axis, and the detection means detects a rotation angle of the instrument operator on the rotation axis. The control unit may control the driving unit according to the rotation angle detected by the detection unit.

  According to the present invention, a musical instrument can be easily operated with a small force, and a natural musical instrument can be output.

[Configuration of the embodiment]
First, the configuration of an embodiment of the present invention will be described. FIG. 1 is an overall view of a saxophone according to the present embodiment. A mouthpiece 12 is disposed on the upper portion of the tube body 1 provided with a plurality of sound holes via a blowing tube 11, and a morning glory tube 13 is disposed on the lower portion of the tube body 1. On the side of the tube 1, a left-hand main key group 4 operated by the player's left hand, a left-hand key group 2, and a right-hand key group 3 operated by the player's right hand are arranged. . The left hand side key group 2 includes a HighD key 21, a HighF key 23, and a HighEb key 24, and the left hand main key group 4 includes a C key 22 and an A key 44. The right-hand side key group 3 includes a High D toll lever 31, a High E key 32, a side C lever 33, and a side Bb lever 34. In general, a key that is pressed with a finger removed from a normal position is called a side key, and is distinguished from a main key.

  In addition, the saxophone according to the present embodiment includes a performance assisting device 100 that drives a member related to sound generation when the performer operates a key of the saxophone. FIG. 2 is a block diagram showing a hardware configuration of the performance assisting apparatus 100 according to the present embodiment. As shown in FIG. 2, the performance assisting device 100 includes a control unit 101, a plurality of sensors 102, a plurality of driving units 103, a switch 104, and a power source 105. In order to prevent the drawing from becoming complicated, the plurality of drive units 103, key columns, and key tubes are not shown in FIG.

  The switch 104 is a slide-type switch for turning on / off the power of the performance assisting device 100 and is disposed in the tube body 1. When the switch slider of the switch 104 is slid to the ON side, power is supplied from the power source 105 to each part of the performance assisting device 100 to operate the performance assisting device 100, and the slider of the switch 104 slides to the OFF side. In the case where power is being used, power is not supplied to each part of the performance assisting device 100, and the performance assisting device 100 does not operate.

The sensor 102 is a film-like pressure sensor, and is affixed to various keys that the player touches when playing the saxophone. The sensor 102 detects the pressure from the finger when the performer presses the key, and outputs an analog signal indicating the detected pressure value to the control unit 101.
The drive unit 103 includes a motor 103A, and is disposed in the tube 1 corresponding to the sound hole of the saxophone. The rotation of the motor 103 </ b> A provided in the drive unit 103 is controlled by the control unit 101.

  The control unit 101 is, for example, a so-called one-chip microcomputer including a CPU (Central Processing Unit) 101A, a ROM (Read Only Memory) 101B, a RAM (Random Access Memory) 101C, an input terminal, and an output terminal. The ROM 101B stores a control program, a pressure table TB1, and a pressure table TB2. FIG. 3A is a diagram illustrating the format of the pressure table TB1, and FIG. 3B is a diagram illustrating the format of the pressure table TB2.

The pressure table TB1 stores the relationship between the pressure value and the current value shown in FIG. 4A. As shown in FIG. 3A, the pressure table TB1 is associated with the pressure value. The current value supplied to the motor 103A of the drive unit 103 is stored.
The pressure table TB2 stores the relationship between the pressure value and the current value shown in FIG. 4B. As shown in FIG. 3B, the pressure table TB2 also shows the pressure value. A current value to be supplied to the motor 103A of the drive unit 103 is stored in association therewith.
3A and 3B, the relationship between the pressure values is a1 <a2 <a3 <a4 <a5. The relationship between the current value stored in the pressure table TB1 and the current value stored in the pressure table TB2 is as follows: b11> b21, b12> b22, b13> b23, b14> b24, b15> b25. It has become.

When power is supplied from the power source 105, the control unit 101 operates according to a program stored in the ROM 101B, and controls the drive unit 103 using the pressure table TB1 or the pressure table TB2 according to a signal output from the sensor 102. To do.
Specifically, the control unit 101 receives an analog signal output from the sensor 102 and stores a pressure value represented by the received analog signal. The stored pressure value is initialized at the start of program execution and is stored as “0”. The control unit 101 receives the analog signal output from the sensor 102 and determines whether the pressure value represented by the received analog signal has increased or decreased from the pressure value already stored. When it is determined that the pressure value represented by the received analog signal has increased from the stored pressure value, the pressure value corresponding to the pressure value represented by the received analog signal is retrieved in the pressure table TB1 and retrieved. The motor 103A is controlled with the current value stored in association with the pressure value. And the pressure value compared with the memorize | stored pressure value is newly memorize | stored. On the other hand, if the control unit 101 determines that the pressure value represented by the received analog signal has decreased from the stored pressure value, the control unit 101 sets the pressure value corresponding to the pressure value represented by the received analog signal to the pressure table TB2. The motor 103A is controlled with the current value stored in association with the searched pressure value. And the pressure value compared with the memorize | stored pressure value is newly memorize | stored.

Next, the key mechanism of the saxophone will be described. FIG. 5 is a diagram for explaining a key mechanism related to the left-hand side key group 2 of the saxophone shown in FIG. As shown in FIG. 5, a set of a key post 21B, a set of a key post 23B, and a set of a key post 24B are attached to the tubular body 1.
FIGS. 6A and 6B are diagrams schematically showing a side surface of the HighF key 23. FIG. As shown in FIG. 5, the key tube 23F is rotatably supported by a key column 23B, and a HighF key 23 is attached to the key tube 23F. The HighF key 23 in the left hand side key group 2 is a key for opening and closing the sound hole 23D. The HighF key 23 is provided with a lever portion 23A to which the sensor 102 is attached.
A drive unit 103 is disposed in the vicinity of the sound hole 23 </ b> D corresponding to the HighF key 23. An opening / closing member 103B that is bent as shown in the drawing is attached to the shaft of the motor 103A provided in the drive unit 103, and a tampon plate for closing the sound hole 23D is attached to the end of the opening / closing member 103B. 23C is attached.
Further, a spring (not shown) is attached to the opening / closing member 103B, and the opening / closing member 103B is urged by the spring in a direction of pulling down the tampo dish 23C downward.
In FIG. 6A, when the shaft of the motor 103A rotates counterclockwise, the opening / closing member 103B rotates around the shaft as the shaft rotates. Then, when the opening / closing member 103B rotates counterclockwise around the shaft, as shown in FIG. 6B, the tampo dish 23C is pulled up and the sound hole 23D is opened. On the other hand, when the motor shaft rotates clockwise from the state shown in FIG. 6B, the opening / closing member 103B rotates around the shaft as the shaft rotates. When the opening / closing member 103B rotates clockwise around the shaft, the tampo dish 23C is pushed down and the sound hole 23D is closed.

  The key tube 23F is urged in the direction of arrow A (first direction) in FIG. 6A by a spring (not shown) provided on the key post 23B, and the player touches the lever portion 23A. If not, the state is as shown in FIG. On the other hand, when the lever portion 23A is pressed by the player, the HighF key 23 rotates in the direction opposite to the arrow A direction (second direction) against the biasing force of the spring.

The configuration of the HighF key 23 has been described above. The configuration of the HighD key 21 and the HighEb key 24 is the same as that of the HighF key 23. The HighD key 21 includes a lever portion 21A and rotates around the key tube 21F. The key 24 includes a lever portion 24A and rotates around the key tube 24F. Further, in the vicinity of the sound hole 21D corresponding to the HighD key 21 and in the vicinity of the sound hole 24D corresponding to the HighEb key 24, the driving unit 103, the opening / closing member 103B, and the tampon plates 21C and 24C are also provided corresponding to each sound hole. It is arranged.
In FIG. 1, in order to prevent the drawing from becoming complicated, the drive unit 103 and the opening / closing member 103B, the key post, and the key tube corresponding to each key are not shown. In addition, a key tube is provided, and a driving unit 103 and an opening / closing member 103B are provided corresponding to each sound hole.

[Operation of the embodiment]
Next, the operation of this embodiment will be described.
First, when the slider of the switch 104 is slid to the ON side, power is supplied from the power source 105 to each part of the performance assisting device 100. At the time when the switch is slid to the ON side and power is supplied, the pressure value stored in the control unit 101 is initialized to “0”. When the performer touches the lever part 23A of the HighF key 23 with a finger in a state where power is supplied to each part of the performance assisting device 100, the pressure from the finger is detected by the sensor 102 disposed on the lever part 23A. Then, an analog signal indicating the detected pressure is input to the control unit 101.

When the analog signal output from the sensor 102 is input, the control unit 101 converts the input analog signal into a digital signal, and the pressure when the player presses the sensor 102 is converted from the converted digital signal. Obtain the indicated pressure value.
And the control part 101 will compare the stored pressure value with the calculated | required pressure value, if a pressure value is calculated | required. Here, if the obtained pressure value is “a1”, the stored pressure value is “0”, and the obtained pressure value is higher than the stored pressure value. The cell storing the pressure value is searched in the pressure table TB1. When the control unit 101 finds a cell in which the obtained pressure value is stored, the control unit 101 reads the current value stored in association with the found cell from the pressure table TB1.

  Here, since the obtained pressure value is “a1”, the current value “b11” stored in the pressure table TB1 in association with this pressure value is read. Then, the obtained pressure value “a1” is newly stored. When the control unit 101 reads the current value, the control unit 101 supplies the read current value to the motor 103A. When the current having the read current value is supplied to the motor 103A, torque that rotates the shaft of the motor 103A shown in FIG. 6A in the counterclockwise direction is generated in the shaft of the motor 103A. When torque that rotates the shaft counterclockwise is applied to the shaft, a force is applied to the tampon plate 23C connected to the shaft via the opening / closing member 103B to pull the tampo plate 23C upward.

FIG. 7 is a diagram showing the relationship between the force applied to the lever portion 23A by the player and the force acting on the tampon plate 23C. FIG. 8 illustrates the force applied to the lever portion 23A by the player and the tampon plate 23C. It is a figure showing the relationship between the distance between sound holes 23D.
Here, if the force to push down the lever portion 23A is F11, the force from the motor 103A is applied to the tampo dish 23C, and the force to lift the tampo dish 23C is F23 as shown in FIG. . However, if the force for pulling up the tampo dish 23C does not reach the force necessary for separating the tampo dish 23C from the sound hole 23D, the tampo dish 23C does not separate from the sound hole 23D. As shown in FIG. 5, the distance between the tampon plate 23C and the sound hole 23D remains “0”, and the sound hole 23D remains closed.

  Next, when the pressure applied to the lever portion 23A is increased by applying a force F14 to further lower the finger touching the lever portion 23A, the increased pressure is disposed on the lever portion 23A. An analog signal detected by the sensor 102 and indicating the detected pressure value is input to the control unit 101.

  When the control unit 101 obtains the pressure value “a3” indicating the pressure when the performer presses the sensor 102 from the analog signal output from the sensor 102, the control unit 101 obtains the stored pressure value and the obtained pressure value. Compare. Here, since the stored pressure value is “a1” and the obtained pressure value “a3” is higher than the stored pressure value, the control unit 101 stores the obtained pressure value in the pressure table TB1. The current value stored in association with the found cell is read from the pressure table TB1. Here, since the obtained pressure value is “a3”, the current value “b13” stored in the pressure table TB1 in association with this pressure value is read. Then, the obtained pressure value “a3” is newly stored. When the control unit 101 reads the current value, the control unit 101 supplies the read current value to the motor 103A. Here, since the current value “b13” is larger than the current value “b11”, a larger torque is generated on the shaft of the motor 103A than when the current of the current value “b11” is supplied. The force for pulling up 23C is F24 which is larger than that when the current of the current value “b11” is supplied. Here, if the force F24 for pulling up the tampo dish 23C is equal to or greater than the force necessary to separate the tampo dish 23C from the sound hole 23D, the tampo dish 23C is pulled upward. Then, as shown in FIG. 6 (b), the distance between the sound hole 23D and the tampo dish 23C is increased and the sound hole 23D is opened, and as shown in FIG. 8, the sound hole 23D and the tampo dish 23C are opened. The distance between is x1.

Thereafter, if the force applied to the finger by the performer to close the sound hole 23D is weakened, and the force to push down the lever portion 23A becomes F15 smaller than F14 and larger than F11, the pressure applied to the lever portion 23A decreases. The reduced pressure is detected by the sensor 102 disposed in the lever portion 23A, and an analog signal indicating the detected pressure is input to the control unit 101.
When the controller 101 obtains a pressure value indicating the pressure when the performer presses the sensor 102 from the analog signal output from the sensor 102, the controller 101 compares the stored pressure value with the obtained pressure value. Here, when the calculated pressure value is “a2”, since the calculated pressure value is lower than the stored pressure value “a3”, the control unit 101 stores the calculated pressure value “a2”. Is searched in the pressure table TB2. And the control part 101 searches the cell in which the calculated | required pressure value is stored in pressure table TB2, and reads the electric current value stored in association with the found cell from pressure table TB2.
Here, the current value “b22” stored in the pressure table TB2 in association with the obtained pressure value “a2” is read. When the control unit 101 reads the current value, the control unit 101 supplies the read current value to the motor 103A. Here, since the current value “b22” is smaller than the current value “b13”, a smaller torque is generated on the shaft of the motor 103A than when the current of the current value “b13” is supplied. When a smaller torque is generated than when the current of “b13” is supplied, the force for pulling up the tampo dish 23C is smaller than that when the current of “b13” is supplied as shown in FIG. Thus, the force for pulling up the tampo dish 23C is smaller than the force necessary to separate the tampo dish 23C from the sound hole 23D. Then, the tampo dish 23C is pulled downward, the distance between the sound hole 23D and the tampo dish 23C is reduced, and the sound hole 23D is closed as shown in FIG.

In this embodiment, since the link mechanism is not provided, there is no adverse effect on the timbre due to the vibration from the link mechanism to the tube, which occurs when the lever is operated.
In addition, according to the present embodiment, the performance can be performed by opening and closing the tampon plate even without a link mechanism that connects the lever portion and the tampon plate. Therefore, the tube body is not limited to the lever arrangement of the conventional saxophone. This increases the degree of freedom in lever arrangement.
Moreover, in this embodiment, since it does not have a complicated link mechanism, assembly and maintenance of a saxophone can be performed easily.
In addition, according to the present embodiment, since the sound hole is opened and closed by the motor, even a person with weak finger pressing force can easily perform. In the above-described embodiment, the sensor 102 is affixed to another key of the saxophone, and the drive unit 103 is also provided in the vicinity of the other dandelion dish. You may make it control. In particular, in a saxophone such as a baritone saxophone having a large tampon dish, the force required to move the tampon dish is increased by the size of the tampon dish. In addition, since the key for moving the tampon plate corresponding to the bass part of the baritone saxophone is operated with the little finger, it is difficult for the player with weak power to operate. However, according to the present embodiment, since the tampon plate can be easily moved according to the player's operation even with a small force, even a player with weak power can easily perform.
In addition, according to the present embodiment, the sound hole is not opened / closed only by the player touching or releasing the key, but the force to lift the tampon plate according to the pressure from the finger is controlled. Therefore, the sense of subtle touch of the keys during performance is not impaired.
In addition, according to the present embodiment, since the power required for performance can be reduced, a phrase of an early passage can be realized and the expressive power of performance is enriched.

[Modification]
As mentioned above, although embodiment of this invention was described, this invention is not limited to embodiment mentioned above, It can implement with another various form. For example, the present invention may be implemented by modifying the above-described embodiment as follows.

  In the above-described embodiment, the case where the performance assisting device 100 is attached to the saxophone has been described. However, the performance assisting device 100 is not limited to the saxophone, and may be a wind instrument other than the saxophone as long as it is a musical instrument having a mechanism for opening and closing the sound holes. You may wear it.

  In the above-described embodiment, the sensor and the drive unit may be provided only for arbitrarily selected keys. In the above-described embodiment, each part of the performance assisting device may be freely attached to and detached from the musical instrument.

In the above-described embodiment, the driving unit is controlled by detecting the pressure in the operating element of the musical instrument. However, the moving speed of the operating element is obtained by detecting the amount of change in the operating element position per unit time. You may make it control a drive part according to speed. Alternatively, the moving speed may be differentiated to obtain the acceleration of the operator, and the drive unit may be controlled according to the obtained acceleration.
In the above-described embodiment, the rotation angle of the key tube supported by the key column may be detected by an angle sensor, and the drive unit may be controlled according to the detected rotation angle. That is, the relative distance between the instrument operator and the sound hole of the instrument body is detected, whether the pressure on the instrument operator is detected or the rotation angle of the rotation axis of the instrument operator is detected. Will do. Specifically, in the state shown in FIG. 6A, the motor 103A is not driven, and the torque of the motor 103A increases as the rotation angle of the lever portion 23A increases from the state shown in FIG. The motor 103A may be controlled so as to increase.

  In the above-described embodiment, a nonvolatile memory may be provided in the performance assisting device, and the pressure table may be stored in the nonvolatile memory. Moreover, in the aspect which memorize | stores a pressure table in a non-volatile memory, display devices, such as a liquid crystal display which displays the content of a pressure table, and operation elements, such as a numeric keypad for inputting a numerical value, are provided in a performance auxiliary device, and a pressure table The player may be able to change the numerical value stored in.

  Further, in the configuration in which the pressure table is stored in the nonvolatile memory, as shown in FIG. 9, a set of the pressure table TB1A used when the pressure value increases and the pressure table TB2A used when the pressure value decreases. The pressure table TB1B used when the pressure value increases and the pressure table TB2B used when the pressure value decreases, the pressure table TB1C used when the pressure value increases and the pressure table TB1B used when the pressure value decreases A plurality of pressure tables such as a set of pressure tables TB2C are stored, and an operation switch 107 for selecting any one of the plurality of sets of pressure tables is provided in the performance assisting device 100. The player selects one of a plurality of sets of pressure tables according to the operation performed on the operation switch 107, and selects the selected one. Depending on the pressure table may be controlled driving unit 103. Note that the plurality of pressure tables may be stored in the ROM 101B instead of the nonvolatile memory 106.

  In a mode in which a plurality of pressure tables are stored, the pressure table may be stored corresponding to each key of the musical instrument. For example, in the above-described embodiment, the pressure table TB1A and the pressure table TB2A may be associated with the HighF key 23, and the pressure table TB1B and the pressure table TB2B may be associated with the HighEb key 24. Further, the values stored in the pressure table may be the same value or different values for each pressure table. When the key is operated, the driving unit 103 may be controlled using a pressure table corresponding to the operated key. According to this aspect, even when it is difficult to apply force only to a specific key, the key can be operated even if the operating force is small by adjusting the value of the pressure table. Each key can be operated even when the force required for the operation differs for each key.

  In the embodiment described above, a predetermined time is counted after the current value for controlling the motor 103A is read from the pressure table, and the motor 103A is actually controlled with the read current value after the time count is completed. Thus, there may be a delay between the operation of the lever portion with the finger and the control of the motor 103A.

  In the above-described embodiment, the current value for controlling the motor 103A is obtained using the pressure table, but instead of using the table, the relationship between the pressure value and the current value is determined by a linear function or a nonlinear function. The current value may be obtained from the pressure value by a function.

  In the embodiment described above, the relationship between the pressure value stored in the pressure table TB1 and the current value becomes nonlinear as shown by the curve L11 shown in FIG. 10, and the pressure value stored in the pressure table TB2 and the current value are The relationship may be non-linear like a curve L12 shown in FIG. Further, the relationship between the pressure value and the current value stored in the pressure table TB1 is non-linear as shown by a curve L12, and the relationship between the pressure value and the current value stored in the pressure table TB2 is non-linear as shown by a curve L11. There may be.

In the embodiment described above, an ultrasonic motor may be used as the motor 103A. Then, according to the pressure value detected by the sensor 102, the ultrasonic motor may be controlled to move the lever portion 23A up and down.
In the above-described embodiment, the motor 103A may be a stepping motor. In the configuration using the stepping motor, the pressure table stores the pressure value and the rotation angle of the shaft of the stepping motor in association with each other, and when the pressure is detected by the sensor 102, the pressure value detected by the rotation angle of the shaft. The stepping motor may be controlled so that the rotation angle is stored in association with.

  In the above-described embodiment, the motor is controlled using different pressure tables depending on whether the lever portion is pressed or released. However, when the number of pressure tables stored is one and the lever portion is pressed. The motor may be controlled using the same table at the time of release.

  In the embodiment described above, the relationship between the force applied by the performer to the lever portion and the force acting on the tampon plate is linear as shown in FIG. 7, but FIGS. 11 (a) to 11 (d). As shown in FIG. Further, as shown in FIG. 11 (e), no force is applied to the tamper pan until a certain force is applied to the lever portion, and when a certain force is applied to the lever portion, a certain force is applied. You may make it not add to a tampo dish.

1 is an overall view of a saxophone according to an embodiment of the present invention. It is the block diagram which showed the structure of the performance assistance apparatus 100 which concerns on the same embodiment. It is the figure which illustrated pressure table TB1 and TB2 which concern on the same embodiment. It is a figure showing the relationship between the pressure value stored in the pressure table and the current value. It is a figure for demonstrating the key mechanism of the saxophone which concerns on the same embodiment. FIG. 4 is a diagram schematically showing a side surface of a HighF key 23. It is a figure showing the relationship between the force which acts on a tampon plate, and the force which the performer applied to the lever when a performance auxiliary device is ON in 1st Embodiment. It is a figure showing the relationship of the distance between a tampon plate and a sound hole when a player applies force to a lever. It is the block diagram which showed the structure of the performance assistance apparatus concerning the modification of this invention. It is a figure showing the relationship between the pressure value stored in the pressure table which concerns on the modification of this invention, and an electric current value. In the modification of this invention, it is the figure showing the relationship between the force which acts on a tampon plate, and the force which the player applied to the lever.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Tube, 2 ... Left hand side key group, 3 ... Right hand side key group, 4 ... Left hand main key group, 11 ... Blow-in pipe, 12 ... Mouthpiece, 13 ... -Morning glory tube, 21 ... HighD key, 22 ... C key, 23 ... HighF key 23, 24 ... HighEb key, 21A, 23A, 24A ... Lever part, 21B, 23B, 24B .. Key pillar, 21C, 23C, 24C ... Tampo plate, 21D, 23D, 24D ... Sound hole, 23F ... Key tube, 31 ... High D trill lever, 32 ... High E key, 33 ..Side C lever 34 ... Side Bb lever 44 ... A key 100 ... Performance assisting device 101 ... Control unit 102 ... Sensor 103 ... Drive unit 103A ... Motor, 104 ... Switch, 105 ... Power supply

Claims (3)

A musical instrument operator;
A sound generator corresponding to the instrument operator;
A sounding member provided on the musical instrument to be sounded by the sounding unit and spaced apart from the instrument operator;
Detecting means for detecting an effect on the instrument operator;
Driving means for driving a sounding member corresponding to the instrument operator;
And a control means for controlling the drive means based on the action detected by the detection means. The detection means detects the magnitude of the force applied to the instrument operator,
The musical instrument according to claim 1, wherein the control unit controls the driving unit according to the magnitude of the force detected by the detection unit. The instrument operator is pivotable about a pivot axis,
The detection means detects a rotation angle of the instrument operator on the rotation shaft,
The musical instrument according to claim 1, wherein the control unit controls the driving unit according to a rotation angle detected by the detection unit.

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