JPH05289671A - Musical sound controller - Google Patents

Abstract

PURPOSE:To facilitate operation by a hand and to perform various musical sound control corresponding to an operation mode. CONSTITUTION:When a turntable 28 is rotated in the clockwise direction A, a 1st slider 16 which is pressed by a 1st cam part 37 moves down and only a 1st fixed contact is made; when the turntable is rotated in the counterclockwise direction B, a 2nd slider 17 which is pressed by a 2nd cam pad 38 moves down and only a 2nd fixed contact is made. When the turntable 28 is pressed, the reverse surface of the turntable 28 presses both the 1st and 2nd sliders 16 and 17, which move down, so that the 1st and 2nd fixed contacts are both made. Therefore, the timbre of a generated musical sound is variously controlled by indicating the generation of a musical sound signal having different timbre corresponding to the making of only the 1st fixed contact, the making of only the 2nd contact, and the simultaneous making of the 1st and 2nd fixed contacts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical tone control device for controlling a characteristic of a musical tone in an electronic musical instrument in accordance with an external operation.

[0002]

2. Description of the Related Art Conventionally, as a musical tone control device for obtaining a pitch bend effect, for example, an electronic musical instrument having a wheel type pitch bender provided on the main body of the musical instrument has been known (for example, actual development 63). -150997).
In this musical sound control device, a bend wheel made of a thin disk is rotatably attached to a horizontal axis provided in the instrument body, and a part of the outer periphery of the bend wheel is placed on the instrument body. It is projected. By manually rotating the outer peripheral surface of the projecting bend wheel, the pitch bend effect in which the pitch of the musical sound is changed can be obtained.

[0003]

However, in such a conventional musical tone control apparatus, since the outer peripheral surface of the bend wheel made of a thin disk rotatable about a horizontal axis is a manual operation portion, The area of the hand operation part is not enough,
It has the disadvantage that it is difficult to rotate it by hand. Further, since only the rotation operation around the horizontal axis is possible, the operation mode is unique, and therefore, when the characteristic of the musical sound is controlled according to the operating mode, the controllable characteristic of the musical sound is also It was limited and could not perform various musical tone controls.

The present invention has been made in view of the conventional problems as described above, and provides a tone control device capable of facilitating manual operation and performing various tone control according to the operation mode. The purpose is.

[0005]

In order to solve the above-mentioned problems, according to the present invention, the device is supported on the main body of the apparatus so as to be horizontally rotatable and vertically movable, and horizontally or vertically moved according to a manual operation on the upper surface. A turntable and a control signal output means for outputting a tone control signal in response to horizontal rotation and vertical movement of the turntable are provided.

[0006]

In the above structure, the horizontally rotatable turntable serves as a manual operation portion when the upper surface thereof is horizontally rotated or moved up and down, and a sufficient area is secured as the manual operation portion. Further, since the turntable is capable of horizontal rotation and vertical movement and the musical tone control signals are output in response to these horizontal rotation and vertical movement, the musical tone control signals corresponding to horizontal rotation in different directions are output. The tone is controlled in various ways, and the tone is controlled by the tone control signal corresponding to the vertical movement, whereby the tone is controlled in various ways.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. That is, the first embodiment shown in FIGS.
The present invention is applied to an electronic keyboard musical instrument, and as shown in FIG. 1, the musical instrument body 1 is provided with a musical tone control device 3 together with the keyboard 2 and the like. FIG. 2 shows the musical tone control device 3
2 shows a cross-sectional structure of the musical instrument body 1 in a portion where the instrument body 1 is provided. The musical instrument body 1 is composed of an upper case 4 and a lower case 5 which compose the apparatus body. Are connected to each other.

The upper case 4 is provided with a headed cylindrical bearing portion 7, and a circular hole 8 is formed in the center of the head portion of the bearing portion 7.
Is molded. In addition, the upper case 4 is provided with a ring-shaped recess 9 around the entire circumference of the bearing 7, and in the recess 9, a turntable guide 10 having an arcuate peripheral surface is shown in FIG. The first and second stoppers 11 and 12 each having a cylindrical shape with a head are provided upright. The turntable guide 10 and the stoppers 11 and 12 are both the upper case 4
Has almost the same height as the surface of the
2 are provided on the same circumference of a circle centered on the circular hole 8.

Guide cylinders 13 and 14 are provided upright on the same circumference on the clockwise A side of the first stopper 11 and on the counterclockwise B side of the second stopper 12, respectively. There is. As shown in FIGS. 4 and 5, the guide tube portions 13 and 14 are cylindrical and have the same shape as the turntable guide 10.
It has the same height as the stoppers 11 and 12, and
An assembly hole 15 penetrating the upper case 4 is provided at the lower end.

A first slider 16 (FIG. 5) is slidably fitted in one guide cylinder portion 13 and a second slider 17 (FIG. 4) is slidably fitted in the other guide cylinder 14. There is. Both sliders 16 and 17 have a spherical head 1 at the upper end.
8 is provided, and at the lower end of the head portion 18, the shaft portion 1 that is inserted into the assembly hole 15 and projects to the lower surface side of the concave portion 9 is provided.
9 is provided. A horizontal flat plate portion 20 is provided at a lower end portion of the shaft portion 19, and a movable contact 21 having conductivity is attached to a lower surface of the flat plate portion 20. A coil spring 22 is housed inside the guide tubular portions 13 and 14 along the circumference of the shaft portion 19, and the upper end of the coil spring 22 is in contact with the lower surface of the head portion 18. .. As a result, the sliders 16 and 17 are moved to the head 1
The upper side of 8 is urged in a direction projecting from the upper ends of the guide tube portions 13 and 14.

Further, as shown in FIG. 3, a return spring position restricting portion 23 having a plane arc shape is provided at a predetermined position on the recess 9 around the bearing portion 7, and On the outer peripheral side of the return spring position restricting portion 23, a flat arc-shaped opening 24 is similarly provided. A coil portion of a return spring 27, which is a torsion coil spring, is wound around the bearing portion 7. The position of the return spring 27 is regulated by contacting the end portions 27a and 27b of the return spring 27 with both end faces of the return spring position regulating portion 23.

On the other hand, as clearly shown in FIG. 2, the turntable 28 has a disk shape having a diameter slightly smaller than that of the recess 9, and a flange 32 which is slidably contacted with the outer peripheral surface of the upper end of the turntable guide 10 is integrally formed on the peripheral portion. Has been molded. Further, a shaft portion 29 with a screw hole is formed integrally with the center of the turntable 28 so as to project vertically. The shaft portion 29 with a screw hole is rotatably inserted into the circular hole 8 of the bearing portion 7 from above, and the thrust bearing 30 is fixed to the lower end portion of the inserted shaft portion 29 with a screw by a screw 31. There is. Further, a coil spring 33 is wound around the shaft portion 29 with a screw hole, and the coil spring 33 is pressed against the lower surface of the turntable 28 at the upper end and pressed against the upper surface of the bearing portion 7 at the lower end. There is. Therefore, the turntable 28 is biased upward by the coil spring 33, and the thrust bearing 30 abuts the lower surface of the bearing portion 7 in this state, whereby the normal height position of the turntable 28 is regulated. There is. Then, on the lower surface of the turntable 28 whose height position is restricted,
Since the head portions 18 of the first and second sliders 16 and 17 are in pressure contact with each other, the protruding positions of both sliders 16 and 17 during normal operation are also regulated.

When the turntable 28 is moved downward against the bias of the coil spring 33,
The sliders 16 and 17 move downward against the coil springs 22, respectively, and the lower surface of the turntable 28 is moved to the guide tube portion 13.
By contacting the upper end surface of the turntable 28, the height position of the turntable 28 when it is moved downward is regulated. Further, when the lower surface of the turntable 28 abuts on the upper end surface of the guide tube portion 13 as described above, the upper surfaces of the first and second stoppers 11 and 12 and the upper end surface of the turntable guide 10 which have the same height as the lower surface of the guide tube portion 13. The lower surface of the turntable 28 comes into contact with the bottom surface of the turntable 28, and the height position of the turntable 28 when it is moved downward is also regulated.

On the other hand, as clearly shown in FIG. 3, the lower surface of the turntable 28 has cylindrical pressing portions 3 at predetermined two positions.
4a and 34b are provided, and a reinforcing rib 35 is provided between the pressing portions 34a and 34b. Both pressing portions 34
The a and 34b are arranged between both ends 27a and 27b of the return spring 27. As a result, when the turntable 28 is rotationally operated in the clockwise direction A, one pressing portion 34a presses the one end portion 27a of the return spring 27, and conversely, the turntable 28 is rotationally operated in the counterclockwise direction B. The other pressing portion 34b presses the other end portion 27b of the return spring 27.
Then, when the rotating operation on the turntable 28 is released, the return spring 27 elastically returns to its both end portions 27.
The turntable 28 is positioned at the initial neutral position by a and 27b contacting both end surfaces of the return spring position restricting portion 23.

The pressing portions 34a and 34b are inserted into the opening 24 provided in the concave portion 9 so as to be loose and protrude below the upper case 4. On both sides of the opening 24 and on the lower surface side of the upper case 4, stopper pieces 36a and 36b are provided.
Is provided. The stopper pieces 36a and 36b are for restricting rotation of the turntable 28 above a certain level by contacting the pressing portions 34a and 34b of the turntable 28.

Further, on the lower surface of the turntable 28,
The first and second cam portions 37, 38 are integrally formed. The first cam portion 37 is located between the first slider 16 and the first stopper 11 as shown in FIG. 5 when the turntable 28 is positioned at the initial neutral position described above, and the other cam portion is formed. 38 is formed so as to be located between the second slider 17 and the second stopper 12 as shown in FIG. Each of the cam portions 37, 38 has a tapered surface 39 provided on the side of the corresponding slider 16, 17 and inclined from the lower surface of the turntable 28, and a horizontal surface 40 continuous with the lower end portion of the tapered surface 39. When the turntable 28 is horizontally rotated, the horizontal surface 40 allows the heads 18 of the sliders 16 and 17 that are in sliding contact with the tapered surfaces 39 to be retracted into the guide cylinders 13 and 14, and then the guide cylinders 13 and 14.
It is provided at a height position where it can abut the upper end surface of 14.

It should be noted that the two cam portions 37, 38 come to the second stopper 12 by the second cam portion 38 when the first cam portion 37 reaches the first slider 16 (FIG. 6). In the state where the second cam portion 38 reaches the second slider 17 (FIG. 9), the first cam portion 37 has a positional relationship such that it reaches the first stopper 11. Further, as shown in FIG. 1, the upper surface 41 of the turntable 28 is radially provided with a plurality of ridges 42 for preventing the hand from slipping during manual operation.

As shown in FIG. 5, the lower case 5 has a first fixed contact 43 facing the movable contact 21 provided on the first slider 16, and a second slider 17 as shown in FIG. And a second fixed contact 44 facing the lower contact 21 provided on the. Fixed contacts 43, 44
Is fitted on the upper surface of a pedestal 26 fixed to the lower case 5, and the heads 18 of the sliders 16 and 17 are attached to the guide cylinder 1.
It is provided at a height position where it can come into contact with the movable contact 21 when it is immersed in the housings 3, 14. In addition, this fixed contact 43,
Reference numeral 44 is connected to a musical tone control signal input section of a musical tone generating circuit provided inside the musical instrument body 1 via a lead wire or the like (not shown).

In the present embodiment having the above-mentioned structure, when the upper surface 42 is manually operated to rotate the turntable 28 in the clockwise direction A, as shown in FIG. 34a rotates in the same direction A while pressing one end 27a of the return spring 27 with 34a. Along with this, both cam portions 37, 38 move in the same direction A, and the tapered surface 39 of the first cam portion 37 comes into pressure contact with the head portion 18 of the first slider 16. As a result, the first slider 16 begins to move downward against the coil spring 22. When the turntable 28 is further rotated, as shown in FIG. 7, the first slider 16 is retracted into the guide cylinder 13, the movable contact 21 comes into contact with the pair of first fixed contacts 43, and the first fixed contacts are contacted. 43 becomes conductive and is turned on, and the horizontal surface 40 of the first cam portion 37 contacts the upper end surface of the guide tube portion 13.

At this time, as shown in FIG. 8, the horizontal surface 40 of the second cam portion 38 reaches the one stopper 12. Therefore, the horizontal plane 4 of the second cam portion 38
Since 0 reaches one stopper 12, and the horizontal surface 40 of the first cam portion 37 abuts on the upper end surface of the one guide cylinder portion 13, the turntable 28
Downward movement is prevented. Therefore, by rotating the turntable 28 in the clockwise direction A in this manner, when the first fixed contact 43 is turned on, the turntable 28 is turned on.
It becomes impossible to lower the second fixed contact 44 to turn it on. Therefore, when the turntable 28 is rotated in the clockwise direction A, the first fixed contact 43 does not malfunction.
Only can be turned on.

When the fingers are released from the upper surface 41 of the turntable 28 to release the rotation operation on the turntable 28, it is deformed in the clockwise direction A as shown in FIG. 6 and the one end portion 27a of the return spring 27 is elastic. While returning
The turntable 28 is driven counterclockwise. As a result, the turntable 28 rotates in the same direction, and the one end portion 27a of the return spring 27 again contacts the end surface of the return spring position restricting portion 17, whereby the turntable 28 is returned to the initial neutral position.

Next, when the turntable 28 is rotated counterclockwise B by manually operating the upper surface 42, as shown in FIG.
While rotating the other end 27b of the return spring 27 by b, it rotates in the same direction B. Along with this, the cam portions 37 and 38 move in the same direction B, and the tapered surface 39 of the second cam portion 38 comes into pressure contact with the head portion 18 of the second slider 17. As a result, the second slider 17 begins to move downward against the coil spring 22. When the turntable 28 further rotates, the first slider 17 retracts into the guide cylinder 14, the movable contact 21 comes into contact with the pair of second fixed contacts 44, and the second fixed contacts 44.
Is turned on and turned on, and the second cam portion 38
The horizontal plane 40 contacts the upper end surface of the guide tube portion 14.

At this time, similarly to the above, the first cam portion 37
The horizontal surface 40 of the slab has reached the first stopper 11. Therefore, the horizontal surface 40 of the first cam portion 37 has reached the first stopper 12, and the horizontal surface 40 of the second cam portion 38 is in contact with the upper end surface of the one guide cylinder portion 14, etc. As a result, the downward movement of the turntable 28 is prevented. Therefore, by rotating the turntable 28 in the counterclockwise direction B in this manner, the second fixed contact 4
When No. 4 is turned on, it is impossible to lower the turntable 28 and turn on the first fixed contact 43. Therefore, when the turntable 28 is rotated in the counterclockwise direction B, only the second fixed contact 44 can be turned on without malfunction.

When the fingers are released from the upper surface 41 of the turntable 28 to release the rotation operation on the turntable 28, the return spring 27 is deformed in the counterclockwise direction B as shown in FIG. While returning elastically, the turntable 28 is driven in the clockwise direction. As a result, the turntable 28 rotates in the same direction, and the one end portion 27b of the return spring 27 is again moved to the return spring position restricting portion 17.
The turntable 28 is returned to the initial neutral position by contacting the end surface of the turntable 28.

In the state where the turntable 28 is returned to the initial neutral position, the upper surface 4 of the turntable 28 is
When 1 is pressed, the turntable 28 moves downward against the coil spring 33. As a result, the lower surface of the turntable 28 comes into pressure contact with the head 18 of each slider 16, 17, and each slider 16, 17 is as shown in FIG. 10 (only the first slider 16 side is shown in the same figure). , Moves downward against the coil spring 22. Therefore, the heads 18 of both sliders 16 and 17 are respectively set in the guide tubes 13 and 14. As a result, the movable contact 21 has a corresponding first,
The second fixed contacts 43, 44 are contacted, and both fixed contacts 43, 4
4 becomes conductive and both are turned on. At this time, the lower surface of the turntable 28 is pressed against the upper surfaces of the stoppers 11 and 12 and the upper surfaces of the guide tube portions 13 and 14, so that excessive lowering of the turntable 28 is prevented.

That is, in this way, the turntable 28
Is rotated in the clockwise direction A, only the first fixed contact 43 is turned on, when rotated in the counterclockwise direction B, only the second fixed contact 44 is turned on, and when the turntable 28 is pressed, the first fixed contact 43 is turned on. The first and second fixed contacts 43 and 44 can be turned on. Therefore, for example, the tone color NO. The generation of the tone signal No. 1 is instructed, and the tone color NO. 2 is instructed to generate a tone signal, and the first fixed contact 43 and the second fixed contact 44 are simultaneously turned on to generate a tone color NO. By instructing the generation of the tone signal No. 3, it is possible to variously control the tone color of the generated tone. Further, since the upper surface 41 of the turntable 28, which has a sufficient area, serves as an operating portion for switching the timbre by turning on each of the fixed contacts 43 and 44, a sufficient operating area is secured, and rotation and pressing operations by fingers are performed. Can be performed easily.

11 to 14 show a second embodiment of the present invention. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. That is, this second
In the musical tone control device 45 according to the embodiment, a circuit board 46 having a flat arc shape is arranged on the upper surface of the concave portion 9, and on the circuit board 46, as shown in FIG. An optical sensor 47 and a second optical sensor 48 and a third optical sensor 49, which are provided on both sides of the first optical sensor 47 and on the same circumference, are arranged. Each of the optical sensors 47 to 49 is a reflection type in which a light emitting element 50 and a light receiving element 51 are provided in parallel on the upper surface thereof, and a reflection plate 52 mounted on the lower surface of the turntable 28 is located above. , Light emitting element 5
Light from 0 is reflected by the reflecting plate 52, and the reflected light is received by the light receiving element 51, thereby outputting a signal. The reflection plate 52 is arranged on the lower surface of the turntable 28 so as to be located directly above the first optical sensor 47 in a state where the turntable 28 is in the initial neutral position described above.

Further, as shown in FIG. 13, the second and third
The bases of the optical sensors 48 and 49 have the same height, while the base of the first optical sensor 47 is set lower than the second and third optical sensors 48 and 49. Then, in the second and third optical sensors 48 and 49, the turntable 28
Is rotated horizontally and the reflector 52 arrives just above it,
While the first optical sensor 47 has a characteristic of outputting a signal in response to the reflected light, the first optical sensor 47 is reflected at a normal height position before the turntable 28 shown in FIG. It is not sensitive to the amount of light reflected from the plate 52.
As shown in FIG. 5, the turntable 28 is pressed and moves downward, and when the distance from the reflection plate 52 becomes a predetermined value or less, the turntable 28 has a characteristic of being sensitive and outputting a signal.

Therefore, in the second embodiment,
In the initial neutral state shown in FIG. 11 and FIG.
The first optical sensor 47 is maintained in the OFF state even when the first optical sensor 47 exists directly above the first optical sensor 47. Therefore, in this initial neutral state, no signal is output from any of the optical sensors 47 to 79. Then, by rotating the turntable 28 in the clockwise direction A from the initial neutral position, as shown in FIG.
As shown in (B) of FIG.
8, the second optical sensor 48 is turned on and a signal is output.

By rotating the turntable 28 in the counterclockwise direction B from the initial neutral position, as shown in FIG.
As shown in (C) of FIG.
9, the third optical sensor 49 is turned on and a signal is output. Further, when the turntable 28 is pressed at the initial neutral position, the turntable 28 moves downward and the reflecting plate 52 comes close to the first optical sensor 47 as shown in FIGS. 13D and 14. .. Therefore, the first
The optical sensor 47 is turned on, and a signal is output from the first optical sensor 47.

Therefore, for example, when the first optical sensor 47 is turned on, the tone color NO. The generation of the musical tone signal of No. 1 is instructed, and the tone color NO. 2 is instructed to generate a musical tone signal, and the third optical sensor 49 is turned on, the tone color NO. By instructing the generation of the musical tone signal of No. 3, it is possible to variously control the tone color of the generated musical tone.

15 to 17 show a third embodiment of the present invention, and a musical sound control device 53 according to the third embodiment.
A circuit board 46 having a plane arc shape is disposed on the upper surface of the recess 9. On the circuit board 46, as shown in FIG. 16, a first rubber contact switch 54 at the center and second rubber contacts arranged on the same circumference on both sides of the first rubber contact switch 54. A switch 55 and a third rubber contact switch 56 are provided.

Each of the rubber contact switches 54 to 56 is shown in FIG.
As shown in FIG. 5, a pair of fixed contacts 57 fixed to the circuit board 46, and a movable contact 59 facing the fixed contacts 57 and mounted inside a rubber dome portion 58 are provided. Then, the dome portion 58 elastically deforms downward,
When the movable contact 59 comes into contact with the pair of fixed contacts 57, the movable contact 59 is turned on. On the other hand, the lower surface of the turntable 28 is provided with the spherical convex portion 60 located right above the first rubber contact switch 54 in the initial neutral position described above.

Also, as shown in FIG. 17, the second and third
The rubber contact switches 55 and 56 have the same height, while the first rubber contact switch 54 is set lower than the second and third rubber contact switches 54. The second and third rubber contact switches 55 and 56 have such a height that the turntable 28 can be pressed into contact with the convex portion 60 and turned on when the turntable 28 is horizontally rotated.
4 does not contact the convex portion 60 at the normal height position before the turntable 28 is pressed,
Has a height such that it is pressed by the convex portion 60 and turned on when is pressed down.

Therefore, in the third embodiment, in the initial neutral state shown in FIG. 15, all the rubber contact switches 54 to 56 are off. And
When the turntable 28 is rotated clockwise from the initial neutral position so that the convex portion 60 is pressed against the second rubber contact switch 55, the second rubber contact switch 55 is turned on and a signal is output. It In addition, the turntable 28 is rotated counterclockwise from the initial neutral position,
As a result, when the convex portion 60 comes into pressure contact with the third rubber contact switch 56, the third rubber contact switch 56 is turned on and a signal is output. Further, when the turntable 28 is pressed at the initial neutral position, the turntable 28 moves downward and the convex portion 60 comes into pressure contact with the first rubber contact switch 54, and only the first rubber contact switch 54 is turned on. The signal is output.

Therefore, the first rubber contact switch 54 and the second rubber contact switch 54
By turning on the rubber contact switch 55 and the third rubber contact switch 56 to instruct generation of a tone signal with different tones, it is possible to variously control the tone color of the generated tone.

In each of the embodiments, the elasticity of the return spring 27 holds the turntable 28 in the neutral position so that the turntable 28 can be rotated only at a required angle. However, for example, in the third embodiment, the turntable 23 is rotatable by 360 °, and the turntable 28 is rotated by one.
When rotating, the time from when the second contact switch 55 or the third contact switch 56 is turned on to when it is turned on again is counted, and the rotation speed of the operation turntable 28 is detected from this time. By controlling the pitch and tone quality of the generated musical tone by the velocity data according to the rotation speed, a wider variety of musical tone control is possible.

As described above, in the above-described embodiments, in FIG. 18, the control signal output section 71 outputs a control signal in response to the rotation or pressing operation applied to the turntable 28, and in response to this control signal. The control section 72 controls the musical sound generating section 73 so as to generate a musical tone signal of a different tone color. Based on the tone color control of the control unit 72 and the pitch information output from the keyboard unit 74, the musical tone control unit 73 generates a musical tone signal and outputs it as a musical tone from the speaker 76 via the output amplifier 75.

As described above, the control unit 72 not only controls the tone color of the musical tone by the control signal output from the control signal output unit 71, but also the frequency of the musical tone, the automatic performance, the tempo in the automatic accompaniment, and the performance (accompaniment). It is also possible to control the pattern, output of sound effects, and the like.

[0040]

As described above, according to the present invention, the turntable is supported by the main body of the apparatus so as to be horizontally rotatable and vertically movable.
When the turntable horizontally rotates and moves up and down by a manual operation on the upper surface, a tone control signal is output in response to this. Therefore, it is possible to perform various controls according to the operation mode by the musical sound control signal output not only by the rotation of the turntable but also by the vertical movement. Further, since the turntable is horizontally rotated and vertically moved by manual operation on the upper surface of the turntable having a sufficient area, it is possible to secure a sufficient operation area and easily perform rotation and pressing operations by fingers. It will be possible.

[Brief description of drawings]

FIG. 1 is an external view of an electronic musical instrument common to each embodiment of the present invention.

FIG. 2 is a sectional view taken along the line aa in FIG. 1 showing the first embodiment of the present invention.

FIG. 3 is a plan view of a turntable portion of the embodiment.

FIG. 4 is a sectional view taken along the line cc of FIG. 3 showing the same embodiment.

5 is a sectional view taken along the line bb of FIG. 3 showing the same embodiment.

FIG. 6 shows the turntable in the clockwise direction A in the same embodiment.
It is a top view in the state rotated to the right.

FIG. 7 is a sectional view taken along the line dd of FIG. 6 showing the same embodiment.

FIG. 8 is a sectional view taken along the line ee of FIG. 6 showing the same embodiment.

FIG. 9 is a plan view showing a state in which the turntable is rotated counterclockwise B in the embodiment.

FIG. 10 is a sectional view taken along line bb of FIG. 3 in a state where the turntable is pressed in the same embodiment.

FIG. 11 is a sectional view taken along line aa of FIG. 1 showing a second embodiment of the present invention.

FIG. 12 is a plan view of a turntable portion of the embodiment.

13 is a view as seen from an arrow f in FIG. 11 of the same embodiment, FIG.
(A) is a state before operating the turntable, (B) is a state in which the turntable is rotated clockwise, (C) is a state in which the turntable is rotated counterclockwise, (D).
Is a state in which the turntable is pressed.

FIG. 14 is a sectional view taken along the line aa of FIG. 1 in a state where the turntable is pressed in the embodiment.

FIG. 15 is a sectional view taken along the line aa of FIG. 1 showing the third embodiment of the present invention.

FIG. 16 is a plan view of a turntable portion of the embodiment.

FIG. 17 is a view on arrow g of FIG. 15 of the embodiment.

FIG. 18 is a block diagram showing a circuit configuration of the same example.

[Explanation of symbols]

 1 Musical Instrument Main Body 3 Musical Sound Control Device 28 Turntable 41 Upper Surface 43 First Fixed Contact Point 44 Second Fixed Contact Point 45 Musical Sound Control Device 47 First Optical Sensor 48 Second Optical Sensor 49 Third Optical Sensor 53 Musical Sound Control Device 54 First Rubber Contact Switch 55 Second rubber contact switch 56 Third rubber contact switch 71 Control signal output unit 72 Control unit 73 Music tone generation block diagram

Claims (1)

[Claims] 1. A turntable supported on the main body of the apparatus so as to be horizontally rotatable and vertically movable, and horizontally or vertically moved according to a manual operation on an upper surface; and, in response to the horizontal rotation and vertical movement of the turntable, A musical tone control device comprising: a control signal output means for outputting a musical tone control signal.