JPH079576B2 - Musical tone generation control device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a musical sound generation control device capable of controlling musical sound generation of a musical sound generation device according to the movement of a human hand or arm.

"Prior Art" As is well known, in an electronic keyboard instrument, a performer operates a keyboard and various musical tone control operators with his / her hands or feet to specify a desired pitch, tone color, etc. I am supposed to play.

By the way, in the above-mentioned conventional electronic keyboard instrument, the pitch cannot be specified other than pressing the key with a hand or a foot, and the playing method of music is limited.

Therefore, the present applicant has previously proposed and filed a musical tone generation control device as shown in FIGS. 5 to 9 as a device for controlling musical tone generation in accordance with the movement of a hand or an arm.

In FIG. 5, reference numeral 1 denotes a stick, the base portion 1a of which is held by the player's hand H, and the angle detector 2 is incorporated inside the tip portion 1b thereof.

As shown in FIG. 6, the angle detector 2 includes a support plate 3 and four mercury switches a to d attached to the support plate 3.
Each of the mercury switches a to d has an axis line Ja to Jd of 22.5 sequentially with respect to the reference line L shown in the figure.
They are arranged at angles of ゜, 67.5 ゜, 112.5 ゜ and 157.5 ゜ respectively. As shown in FIG. 7, these mercury switches a to d enclose mercury 5 in a glass tube 4 whose both ends are closed, and connect a pair of electrodes 6a and 6b from one end of the glass tube 4. It is inserted inside, and in the state shown in the figure, the electrodes 6a and 6b are in a non-conducting state, and when turned in the direction of the arrow from this state, the electrodes 6a and 6b are in a conducting state. Here, when the angle detector 2 having the configuration shown in FIG. 6 is rotated around the reference point O, the on / off states of the mercury switches a, b, c, d are as shown in FIG. Become. That is, in the state shown in FIG. 6, all the mercury switches a to d are in the off state, and from this state, with the reference point O as the center, the arrow Y direction (counterclockwise direction) shown in the figure.
When it is rotated by 45 °, only the mercury switch a is turned on. Further, when rotated by 45 °, the set of mercury switches a and b is turned on. Hereinafter, every time when rotated by 45 °, the set of mercury switches a, b and c, the set of mercury switches a, b, c and d, The set of mercury switches b, c, d, the set of mercury switches c, d, and the mercury switch d are sequentially turned on. Next, in FIG.
Reference numeral 7 denotes a musical sound generation control circuit, which detects the angle of the angle detector 2 with respect to the ground, that is, the swing-up angle of the hand H holding the stick 1, based on the ON / OFF states of the mercury switches a to d. Pitch data KD corresponding to the detection result
Is output to the tone signal forming circuit 8. Tone signal forming circuit 8
Generates a tone signal having a pitch corresponding to the pitch data KD and outputs it to speed 9. As a result, a musical tone having a pitch corresponding to the swing-up angle of the hand H is emitted from the speaker 9.

"Problems to be solved by the invention" By the way, the human arm can move freely around the shoulder joint. Considering the rotation in the body side direction (side direction) in the movement, The trajectory of the hand in this case is
The locus is along the circumference of a virtual cone with the shoulder joint as the apex. Further, when the hand is rotated to the side, rotation of the wrist twist occurs due to the structure of the joints of each arm. As a result, the conventional angle detector 2 shown in FIG. 6 has a problem that it is not possible to accurately detect the swing-up angle of a human hand. That is, the conventional angle detector 2 includes the support plate 3
Since the four mercury switches a to d are arranged so as to form a predetermined angle with each other, accurate angle detection is possible when rotated in a plane including the plate surface of the support plate 3. When the wrist is twisted, the support plate 3 is rotated in a direction orthogonal to the plate surface, and accurate angle detection cannot be performed. Also,
Since the mercury switches a to d are arranged radially in the same plane with the reference point O as the center, there is also a problem that the external dimensions become large.

The present invention has been made in view of the above-mentioned circumstances, and can accurately detect the swing-up angle of the hand, can control the tone generation of the tone generator according to the detected angle, and can measure the external dimensions. It is an object of the present invention to provide a musical tone generation control device capable of minimizing the noise.

"Means for Solving the Problems" The present invention is an angle detecting means, in which a plurality of detection switches whose contacts are opened and closed according to the inclination of an axis are respectively arranged so that the axes form a predetermined angle with each other. In a musical sound generation control device comprising: a control signal generating means for generating a control signal for controlling the musical sound generating device based on the output of the angle detecting means, a hand holding the angle detecting means centering on a shoulder joint. It is characterized in that the axes of the plurality of detection switches are arranged in a spiral shape so as to cancel the rotation of the wrist twist caused by the rotation when rotated to the side.

[Operation] Normally, when the hand is rotated laterally around the shoulder joint, the rotation of the wrist twist occurs with this rotation, but the axes of the multiple detection switches are spiraled to cancel the rotation of the wrist twist. Since they are arranged in a circular shape, the swing-up angle of the hand can be accurately detected, the tone generation of the tone-generating device can be controlled in accordance with the swing-up angle, and the external dimensions can be suppressed to the necessary minimum. .

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 are diagrams showing the configuration of an angle detector applied to a musical sound generation control apparatus according to an embodiment of the present invention,
FIG. 1 (e) is a front view of the left hand angle detector L, FIGS. 1 (a) to (d) are A _{1 to} D ₁ arrow views of FIG. ₁ (e), and FIG. 2 (e). Is a front view of the angle detector R for the right hand, FIG.
(D) is a view from A _{1 to} D ₁ of FIG. 2 (e), FIG. 3 is a perspective view of the left hand angle detector L, and FIG. 4 is a perspective view of the right hand angle detector R.

1 and 3, the left hand angle detector L is
A cylindrical member 10 having four through holes 10a, 10b, 10c, 10d formed therein.
And four mercury switches a, b, c, d (see FIG. 6) inserted in the through holes 10a, 10b, 10c, 10d, respectively. Also, in FIG. 2 and FIG.
The right angle detector R has four through holes 11a, 11b, 11c, 11d.
And the through hole 11a, 11b, 11
It is composed of four mercury switches a, b, c, d inserted in c, 11d respectively.

Hereinafter, the relative positional relationship between the directions in which the through holes 10a to 10d and 11a to 11d are formed, that is, the axes Ja to Jd of the mercury switches a to d (see FIG. 6) will be described in detail.

First, as shown in FIG. 1 (e), the left hand angle detector L
When the cylindrical member 10 constituting the is viewed from the end face direction,
Center lines of the through holes 10a to 10d formed in the columnar member 10.
la to ld are 30 ° (= θ ₁ ), 75 ° (= θ ₁ +) sequentially in the clockwise direction with respect to the radial reference line K of the cylindrical member 10.
θ ₂ ), 112.5 ° (= θ ₁ + θ ₂ + θ ₃ ), 157.5 ° (= θ
The angle is ₁ + θ ₂ + θ ₃ + θ ₄ ). When the columnar member 10 is viewed from the direction of the arrow A ₁ shown in FIG. 1 (e), as shown in FIG. 1 (a), the center line la of the through hole 10a is
Makes an angle of 50.6 ° (= θa) with respect to the axis C of the columnar member 10, and similarly, when the columnar member 10 is viewed from the directions of arrows B ₁ , C ₁ and D ₁ shown in FIG. 1 (e). In the case of Fig. 1, (b),
As shown in (c) and (d), the center lines lb, lc, and ld of the through holes 10b, 10c, and 10d are 76.9 ° (= θb) and 81.7 ° (= θc) with respect to the axis C of the cylindrical member 10. ) And 67.2 ° (= θd)
Has an angle of. Thus, as shown in FIG. 3, the through-hole 10a~10d are formed spirally along the axis C, arrow A _2, B mercury switch a~d the respective through holes 10a~10d is shown in FIG. _The mercury switches a to d are inserted in the directions ₂ , ₂ , C ₂ and D ₂ respectively, and as a result, the axes Ja to Jd of the mercury switches a to d are arranged in a spiral shape. In this case, the angles θ _{1 to} θ ₄ are ergonomically set theoretically so as to cancel the rotation of the wrist twist that occurs when the human hand is rotated laterally around the shoulder joint. Is.

On the other hand, the columnar member 11 constituting the right-hand angle detector R has through holes 11a to 1a so as to be symmetrical with the columnar member 10 described above.
1d is formed, and as shown in FIG. 2 (e), the center lines la to ld of the through holes 11a to 11d are sequentially counterclockwise with respect to the reference line K by 30 ° (= θ ₁ ), 75 ° (= θ ₁ + θ ₂ ),
112.5 ° (= θ ₁ + θ ₂ + θ ₃ ), 157.5 ° (θ ₁ + θ ₂
The angle is + θ ₃ + θ ₄ ). Others are cylindrical members
Same as 10. In addition, in FIGS. 1 (a) to (d) and FIGS. 2 (a) to (d), in order to show the positions of the through holes 10a to 10d and 11a to 11d, the size of each part is in mm. It is added.

The mercury switches a to d of the left-hand angle detector L and the right-hand angle detector R thus arranged are connected to the musical tone generation control circuit 7 shown in FIG. , The swing-up angle of the hand holding each of the angle detectors L and R is detected based on the on / off state of each mercury switch a to d, and the pitch data KD corresponding to this detection result is the tone signal forming circuit 8. Output to
A loud tone having a pitch corresponding to the hand swing angle is emitted from the speaker 9.

According to one embodiment described above, each mercury switch a-d is
Since the human hand is arranged spirally so as to offset the rotation of the wrist twist that occurs when the hand is rotated laterally around the shoulder joint, the hand-raising angle can be accurately detected and the hand-raising angle can be adjusted accordingly. A pitched musical sound is emitted. Further, the outer dimensions of the angle detectors L and R can be suppressed to the necessary minimum.

In the above-described embodiment, the pitch is configured to change according to the hand-swing angle, but not limited to this, the volume, performance speed, or rhythm pattern of the percussion sound may be changed. You may comprise.

[Advantages of the Invention] As described above, according to the present invention, the angle detecting means composed of a plurality of detection switches whose contacts are opened and closed according to the inclination of the axis is grasped by the hand, and this hand is placed around the shoulder joint. When rotated in one direction, the axes of the plurality of detection switches are arranged spirally so as to cancel the rotation of the wrist twist caused by this rotation, so the hand-raising angle is accurately detected, and It is possible to control the tone generation of the tone generator according to the swing-up angle, and to obtain the effect that the outer dimensions can be suppressed to the necessary minimum.

[Brief description of drawings]

1 (a) to 1 (e) are views showing the configuration of a left hand angle detector L applied to a musical sound generation control device according to an embodiment of the present invention, and FIG. 1 (e) is a left hand angle. A front view of the detector L, FIGS. 1 (a) to (d) are views taken along arrows A _{1 to} D ₁ of FIG. 1 (e), and FIGS. 2 (a) to (e) are embodiments of the present invention. It is a figure which shows the structure of the angle detector R for right hands applied to the musical sound generation control apparatus by an example, FIG.2 (e) is a front view of the angle detector R for right hands, and FIG.2 (a)-(d). ) Is an A ₁ -D ₁ arrow view of FIG. 2 (e), FIG. 3 is a perspective view showing the external configuration of the left-hand angle detector L, and FIG. 4 is an external configuration of the right-hand angle detector R. FIG. 5 is a front view showing the external configuration of the conventional stick 1, FIG. 6 is a front view showing the configuration of a conventional angle detector 2 incorporated in the stick 1, and FIG. 7 is the same angle. To detector 2 Front view illustrating the configuration of a mercury switch a~d the Tagged Ri, FIG. 8 is the same angle inclination angle of the detector 2 and the mercury switch a
FIG. 9 is a block diagram showing the electrical configuration of a conventional musical tone generation control device. a ～ d …… Mercury switch (detection switch), Ja ～ Jd ……
Axis of mercury switch, R, L ... Angle detector (angle detecting means), 10, 11 ... Cylindrical member, 10a-10d, 11a-11d ... Through hole, 7 ... Musical sound generation control circuit (control signal generation) means).

Claims (1)

[Claims] 1. An angle detecting means, in which a plurality of detecting switches are opened and closed according to the inclination of an axis, respectively, so that the axes form a predetermined angle with each other, and based on the output of the angle detecting means. In a musical sound generation control device comprising a control signal generation means for generating a control signal for controlling the musical sound generation device, when the hand holding the angle detection means is rotated laterally around the shoulder joint, A musical tone generation control device in which the axes of the plurality of detection switches are arranged in a spiral shape so as to cancel the rotation of the wrist twist caused by the rotation.