JPH069623B2 - Music control device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a musical tone control device for performing musical tone control so as to generate various musical tones according to, for example, the movement of a player's body.

"Prior Art" Conventionally, musical tones have been generated either by playing a musical instrument such as a piano or a violin or by using a vocal cord.
However, converting a motion such as "bending" or "turning" a human joint into a musical sound has never been performed.

"Problems to be solved by the invention" Therefore, this invention is "bending" or "turning" by humans.
It is an object of the present invention to provide a musical tone control device capable of controlling a musical tone in accordance with the above-mentioned operation or a bending angle or a rotation angle of a part of a human body.

"Means for Solving Problems" The first invention is to "bend" or "turn" a human joint.
And a determination unit that divides the detection range of the detection unit into a plurality of regions and determines to which of the plurality of regions the detection result of the detection unit belongs. It is characterized in that the musical tone control data for controlling the musical tone signal is output based on the discrimination result of the means.

In a second aspect of the present invention, a detection unit that detects a bending angle or a rotation angle of a part of a human body and a detection range of the detection unit are divided into a plurality of regions, and the detection result of the detection unit is the plurality of regions. It is characterized in that it is provided with a discriminating means for discriminating which one belongs to, and outputs the musical tone control data for controlling the musical tone signal based on the discrimination result of the discriminating means.

[Operation] According to the first aspect of the invention, the motion of the human joint “bending” or “turning” is detected by the detecting means, and the detection result belongs to any region in the detection range divided into a plurality of parts. It is determined whether or not, and the musical tone is controlled based on the result.

According to the second aspect of the invention, the bending angle or the rotation angle of a part of the human body is detected by the detecting means, and it is determined to which area of the detection range the detection result belongs to. , Control the tone based on the result. This makes it possible to convert a human body action into a musical sound, and obtain various effects in rhythmic gymnastics and other fields.

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

FIG. 1 is a diagram showing the external structure of a musical tone control apparatus according to an embodiment of the present invention when it is mounted on a player, and FIG. 2 is a block diagram showing the electrical structure of the same embodiment. The device comprises a device body 1, a right elbow detection unit 2, a left elbow detection unit 3, and a right hand detection unit 4, and the device body 1 uses a belt 5 to connect the player's right elbow, They are attached to the left elbow and right hand respectively. In this embodiment, it is assumed that the device body 1 is provided with a tone forming circuit and a speaker controlled by the control device in addition to the tone control device.

Here, the configuration of each detection unit 2, 3, 4 will be described.
First, the right elbow detecting section 2 is configured as shown in FIG. In this figure, reference numeral 7a denotes a supporter-like wearing tool made of a stretchable material according to the shape of the right elbow, and a thin potentiometer 8a is attached to a portion of the wearing tool 7a which covers the elbow joint. There is. A lever 10a is attached to the shaft 9a of the potentiometer 8a.
Is fixed, and the tip of the lever 10a is inserted into and removed from the cylinder 12a as shown in FIG. A spring 13a for pulling in the lever 10a is provided inside the cylinder 12a, and a fixing portion 14a formed at an end of the cylinder 12a has a mounting tool 7a.
It is attached to the part of the a covering the central part of the forearm. When the right elbow detection unit 2 having such a configuration is attached to the right elbow as shown in FIG. 3 and the right elbow is bent and extended, the lever 10a and the cylinder 12a swing according to the bending and extension. The shaft 9a rotates. And this shaft 9a
The detection signal (voltage signal) corresponding to the rotation angle of the right elbow, that is, the bending angle of the right elbow is transmitted from the potentiometer 8a to the cable
It is adapted to be supplied to the apparatus main body 1 via 5a. The left elbow detecting unit 3 is the right elbow detecting unit 2 described above.
Since it is configured in the same manner as described above, each of the above-mentioned constituent elements 7a
Parts corresponding to 15a to 15a are denoted by reference numerals 7b to 15b, and description thereof will be omitted.

Next, the right-hand detection unit 4 is configured as shown in FIGS. 5 and 6. In these figures, 16 is a glove made of a stretchable material, and the portion of the glove 16 that covers the wrist joint has a potentiometer 8c.
Is attached. The shaft 9c of the potentiometer 8c includes a lever 10 similar to the detection unit 2 for the right elbow.
c is fixed, the lever 10c is inserted into and removed from the cylinder 12c, and the fixing portion 14c formed at the end of the cylinder 12c is attached to the portion of the glove 16 that covers the base of the finger. Then, the detection unit 4 for the right hand is
As shown in FIG. 5, when the right hand is attached and the right hand is bent up and down, the shaft 9c rotates accordingly, and a detection signal (voltage) corresponding to the rotation angle of the shaft 9c, that is, the bending angle of the right hand. Signal) is supplied from the potentiometer 8c to the apparatus main body 1 via the cable 15c. On the other hand, the fingertip tips 16a to 16 of the glove 16
On the inner surface of d, pressure sensitive elements 17a to 17d whose specific resistance values change according to the pressing force received from each fingertip are provided. Then, as shown in FIG. 7A, when the fingers are extended, each fingertip and the fingertip tip 1 of the glove 16 are extended.
Since there is a margin between 6a to 16d, each pressure sensitive element 17
The pressing force does not act on a to 17d, and as shown in FIG. 7 (b), when the finger is bent, the pressing force corresponding to the bending angle of each fingertip is applied to each pressure sensitive element 17a to 17d. Acting, the specific resistance value changes. As a result, a detection signal (voltage signal) corresponding to the bending angle of each fingertip is transmitted to each pressure sensitive element 1.
7a to 17d are supplied to the apparatus main body 1 via the cable 15c. The pressure sensitive element 17a
As 17d, you may make it use the piezoelectric element which generate | occur | produces the voltage according to pressure.

Next, in FIG. 2, reference numeral 20 denotes a 7-channel analog multiplexer, which is supplied from the potentiometers 8a to 8c and the pressure sensitive elements 17a to 17d, respectively, based on the channel select signal CS supplied to its select terminal. One of the detection signals (voltage signals) that are output. Reference numeral 21 is an A / D converter that converts the detection signal supplied from the analog multiplexer 20 into digital detection data of predetermined bits.
Further, 22 is a CPU (central processing unit), and 23 is a CPU2.
ROM (read-on memory) in which the program used in 2 is stored, and 24 is used as a work area
It is AM (random access memory). The CPU 22 supplies the channel select signal CS that changes in sequence to the analog multiplexer 20, and the potentiometer 8a
.About.8c and the outputs of the pressure sensitive elements 17a to 17d are scanned at high speed. Further, the CPU 22 uses the potentiometer 8
a and 8b, respectively, and the A / D converter 21
The bending angles of the right elbow and the left elbow are discriminated in four stages based on the detection data exchanged in step 4. Based on the discrimination result, a predetermined sound is generated according to the combination of the bending angles of the right elbow and the left elbow. Key code data KC for instructing high is created.
In addition, the bending angle of the right wrist is determined in three stages based on the detection data supplied from the potentiometer 8c and converted by the A / D converter 21, and the bending angle of the right wrist is determined based on the determination result. Volume data VOL that specifies the volume (high, medium, low) is created. Further, based on the detection data supplied from the pressure sensitive elements 17a to 17d and converted by the A / D converter 21, it is determined whether or not each of the index finger, the middle finger, the ring finger and the little finger is bent,
Based on the discrimination result, tone color designation data TD for designating a predetermined tone color (for example, piano, organ, flute, saxophone, clarinet, etc.) according to the combination of the bent fingers is created. The key code data KC, the volume data VOL, and the tone color designation data TD (tone control data) created by the CPU 22 are supplied to the tone forming circuit 26 via the bus line 25. The tone forming circuit 26 is
The tone pitch corresponding to the supplied key code data KC, the tone volume corresponding to the tone volume data VOL, and the tone color designated by the tone color designation data TD are formed to form a tone signal. The tone signal output from the forming circuit 26 is emitted from the speaker 27 as a tone.
Reference numeral 28 in the figure denotes a transmission circuit for wirelessly transmitting the tone signal output from the tone forming circuit 26.

According to the above-described first embodiment, the pitch of the musical sound emitted from the speaker 27 of the apparatus body 1 can be changed according to the combination of the bending angles of the right elbow joint and the left elbow joint of the player. In addition, the volume of the musical sound can be changed in three steps according to the bending angle of the right wrist joint of the performer, and further, the bent finger of the right index finger, middle finger, ring finger and little finger of the performer can be changed. It is possible to change the tone color of the musical sound according to the combination.

Here, in the above-described embodiment, the bending angles of the elbow joint and the wrist joint are detected by the potentiometers 8a to 8c,
Although the pitch and the like are controlled based on the detection result, as shown in FIG. 8, the potentiometer 31 is attached to the inner arm side elbow side of the supporter-like wearing device 30 that covers the forearm, and the potentiometer 31 is provided. On the shaft 31a of
One end of a rod 32 made of a material such as plastic that allows a certain degree of bending and has little twist is fixed, and the other end of the rod 32 is attached to the inner arm side wrist side of the wearing tool 30. It may be configured to detect the twist angle (rotational angle of the wrist) and control the pitch, tone color, volume, etc. based on the detection result.

Next, a second embodiment of the present invention will be described with reference to FIG.

In FIG. 9, reference numeral 40 is a wearing tool for covering the chest, shoulders and elbows of the player's upper body, which can be attached and detached like a normal outerwear, and the shoulders 40a, 40b and elbows. Four
0c and 40d are made of elastic material, and thin absolute rotary encoders 41a to 41d are attached to the shoulders 40a and 40b and the elbows 40c and 40d, respectively. The shafts of these rotary encoders 41a to 41d have levers 42a to 4a.
2d are fixed, and the tip ends of these levers 42a to 42d are attached to the wearing tool 40 via cushioning members 43a to 43d made of a stretchable material such as rubber. Thus, when the player rotates the right arm or the left arm in the body side direction (direction parallel to the paper surface), the rotation angle of the right shoulder joint is detected by the rotary encoder 41a, and the rotation angle of the left shoulder joint is detected by the rotary encoder 41b.
Detected by. When the player bends the right elbow or the left elbow, the bending angle of the right elbow joint is detected by the rotary encoder 41c, and the bending angle of the left elbow joint is detected by the rotary encoder 41d. The angle detection data output from each of the rotary encoders 41a to 41d is supplied via the cable 44 to the apparatus main body 1a mounted on the player's waist by the belt 5. The apparatus main body 1a and the apparatus main body 1 shown in FIG. 2 have a CPU 22, a ROM 23, a RAM 24, a bus line 25, a tone forming circuit 26, a speaker 27 and a transmission circuit 28, and each rotary encoder 41a to.
The angle detection data supplied from 41d is temporarily configured to have a register and the like. Then, in the second embodiment, the CPU 22 sequentially reads the angle detection data of each of the above registers to create tempo data for designating the performance speed of the musical sound, and sends it to the musical sound forming circuit 26 via the bus line 25. The musical tone forming circuit 26 outputs musical tone signals of percussion sounds (drum sounds, cymbal sounds, etc.) according to a preset rhythm pattern at a performance speed corresponding to the supplied tempo data. Configured to form. In this case, the CPU 22 determines the rotation angle of the shoulder joint in five stages, and determines the playing speed according to the determination result. = 90 degrees, and the bending angle of the elbow joint is determined in four stages, and the playing speed is determined according to the result of this determination. = 150 to about 180.

According to the second embodiment described above, the performance speed of the percussion sound emitted from the speaker 27 can be freely changed according to the rotation angle of the shoulder joint and the bending angle of the elbow joint of the player. In the second embodiment, based on the angle detection data obtained from the rotary encoders 41a to 41d, the key code data KC, the volume data VOL, the tone color designation data TD, etc. are obtained in the same manner as in the first embodiment. It may be created to control the pitch, volume, tone color, etc. of the tone signal.

Next, a third embodiment of the present invention will be described. As shown in FIG. 10, the device according to the third embodiment includes wave transmitters 51a and 51b attached to the inner arms of the right forearm and the left forearm by a supporter-like attachment 50, and a belt 5. Wave receivers 52a, 52 mounted on the waist of the performer
b is composed of a piezoelectric element such as a barium titanate oscillator, and the wave transmitters 51a and 51b generate ultrasonic waves when a high frequency voltage is applied and the wave receiver 52b.
The a and 52b generate high frequency voltage when receiving ultrasonic waves. In this case, each of the wave transmitters 51a and 51b has four wave-transmitting piezoelectric elements T _{1 to} T ₄ as shown in FIG.
The piezoelectric elements T _{1 to} T ₄ have their respective wave-transmitting surfaces with respect to the base surface B ₁ in order of θt ₁ to θt _4.
Are arranged in the respective directions. Also, each wave receiver 5
As shown in FIG. 11 (b), 2a and 52b are composed of two wave-receiving piezoelectric elements R ₁ and R ₂ , and each piezoelectric element R ₁ and R ₂ is based on each wave-receiving surface thereof. _They are sequentially arranged in the directions of θr ₁ and θr ₂ with respect to the surface B ₂ . As a result, as shown in FIG. 11C, the position of the wave transmitter 51a attached to the player's right arm is P relative to the position P ₀ of the wave receiver 52a attached to the player's waist. ₁ , P
Even when there is a change of ₂ , P ₃ and P ₄ , the ultrasonic waves emitted from the wave transmitter 51a reach the wave receiver 52a regardless of their relative positional relationship. Here, for example, when the wave transmitter 51a is attached at a position 25 cm from the shoulder of the player's right arm and the wave receiver 52a is attached at a position 40 cm from the shoulder of the player's right waist, θt ₁ = 28 ° , Θt
₂ = 58 °, θt ₃ = 97 °, θt ₄ = 165 °,
It is sufficient to set θr ₁ = 13 ° and θr ₂ = 38 °. In this case, the distance between the positions P ₀ and P ₁ is 60 cm, and the positions P ₀ and P _{2 are}
The distance between them is 47 cm, the distance between positions P ₀ and P ₃ is 28 cm,
The distance between positions P ₀ and P ₄ is 15 cm.

Next, the electrical construction of the device according to the third embodiment will be described as follows.
It will be described with reference to FIG. In this figure, 55 is a start pulse generator, which has a constant period start pulse S
P is generated, and this start pulse SP is supplied to the input end of the ultrasonic pulse generator 56 and S / R (set / reset).
Each set input terminal S of the flip-flops 57a and 57b
Supply to each. The ultrasonic pulse generator 56 is triggered by the start pulse SP and supplies the ultrasonic pulses UP to the wave transmitters 51a and 51b, respectively, whereby the ultrasonic waves are emitted from the wave transmitters 51a and 51b at a constant cycle. When the ultrasonic waves emitted from the wave transmitters 51a and 51b reach the wave receivers 52a and 52b, the wave receivers 52a and 52b generate high-frequency voltages.
The high frequency voltage output from the wave receiver 52a is the amplifier 58a.
Is supplied to and amplified, and the amplified signal Sa is rectified by the diode 9a and then S / R flip-flop 57a.
Is supplied to the reset input terminal R. The S / R flip-flop 57a is set by the start pulse SP and reset by the output of the diode 9a. That is, the pulse width of the Q output signal Sa ₁ of the S / R flip-flop 57a corresponds to the distance la between the wave transmitters 51a and 52a. Then, this Q output signal Sa ₁
Is supplied to one input end of the AND gate 60a. The AND gate 60a is in the open state while the signal Sa ₁ is supplied, and the clock pulse φ is counted by the counter 61.
It is supplied to the clock input terminal CK of a. Counter 61a
Up counts the clock pulse φ and outputs the count value. That is, the count value of the counter 61a is the distance l between the wave transmitter 51a and the wave receiver 52a.
a, in other words, it corresponds to the rotation angle of the right arm in the body side direction. On the other hand, the high frequency voltage output from the wave receiver 52b is supplied to and amplified by the amplifier 58b, and the amplified signal Sb is rectified by the diode 9b and then supplied to the reset input terminal R of the S / R flip-flop 57b. It S /
The R flip-flop 57b is set by the start pulse SP and reset by the output of the diode 9b. That is, this S / R flip-flop 57
The pulse width of the Q output signal Sb ₁ of b corresponds to the distance lb between the wave transmitter 51b and the wave receiver 52b. Then, the Q output signal Sb ₁ is supplied to one input terminal of the AND gate 60b. The AND gate 60b receives the signal Sb.
_{While 1} is being supplied, the circuit is opened and the clock pulse φ is supplied to the clock input terminal CK of the counter 61b. The counter 61b counts up the clock pulse φ and outputs the count value. That is, the count value of the counter 61b corresponds to the distance lb between the wave transmitter 51b and the wave receiver 52b, in other words, the rotation angle of the left arm in the body side direction. From the above, the ultrasonic measurement circuit 7
0 is configured. The count values of the counters 61a and 61b are set to the tone control data generating circuit 63.
Is supplied to. The tone control data generation circuit 63 outputs the signal S
falling of a ₁ , that is, S / R flip-flop 5
When the count value of 7a is reset, the count value of the counter 61a is taken in, and a reset pulse RP
a is supplied to the reset pulse input terminal R of the counter 61a to reset the counter 61a, and the signal Sb ₁
Falling, that is, S / R flip-flop 57a
At the time when is reset, the count value of the counter 61b is taken in, and shortly thereafter, the reset pulse RPb is supplied to the reset pulse input terminal R of the counter 61b to reset the counter 61b. Then, the counter 61
The tone control data (KC, VOL, TD, etc. described above) corresponding to each count value fetched from a and 61b is formed and output to the tone forming circuit 26. The tone forming circuit 26 forms a tone signal whose pitch, tone color, volume (or performance speed) changes based on the supplied tone control data, and outputs it to the speaker 27. Thus, the speaker 27 generates musical tones corresponding to the rotation angle of the right arm in the body side direction and the rotation angle of the left arm in the body side direction, respectively.

As described above, according to the above-described third embodiment, the right arm of the performer is detected based on the ultrasonic wave propagation time between the transmitter 51a attached to the right arm and the receiver 52a attached to the waist. The rotation angle of the left arm in the body direction can be detected, and the rotation angle of the left arm in the body direction based on the ultrasonic wave propagation time between the wave transmitter 51b attached to the left arm and the wave receiver 52b attached to the waist. Can be detected, and musical tones corresponding to the respective rotation angles of the right arm and the left arm can be generated.

In the above-mentioned third embodiment, the pitch of the musical sound is changed according to the rotation angle of the left and right arms,
Of course, the tone color of the musical tone, the volume, the playing speed, or the like may be changed. Similarly, in the first embodiment described above, the playing speed is changed according to the bending angle of the elbow joint, the pitch is changed according to the bending of each finger, and the like. Can be configured in any combination.

Further, in each of the above-mentioned embodiments, it is not necessary to provide the tone forming circuit and the speaker inside the apparatus body, and the tone control data is output from the apparatus body (for example, a known MI.
Alternatively, the musical tone control data may be supplied by a DI method, and the musical tone control data may be supplied to a musical tone forming circuit (musical tone signal generator) provided separately.

"Effects of the Invention" As described above, according to the present invention, a musical sound corresponding to a motion of "bending" or "turning" a human joint,
Alternatively, it becomes possible to generate a musical sound corresponding to a bending angle or a rotation angle of a part of the human body. This makes it possible to convert a human body action into a musical sound, and obtain various effects in rhythmic gymnastics and other fields. Further, when it is desired to continuously perform the same tone control, even if the action is slightly different, the same tone control can be performed as long as the action is within the same region.
That is, there is an advantage that it is possible to prevent an unintended musical tone control from being performed due to a slight difference in the operation, although the human being is intentionally operating to perform the same musical tone control. To be

[Brief description of drawings]

FIG. 1 is an external view of the first embodiment of the present invention mounted on a player, FIG. 2 is a block diagram showing the electrical configuration of the embodiment of the same figure, and FIG. 3 is the right side of the same embodiment. FIG. 4 is a perspective view showing the external structure of the elbow detecting unit 2, FIG. 4 is a perspective view showing the detailed structure of the right elbow detecting unit 2, and FIG. 5 is an external view of the right hand detecting unit 4 of the first embodiment. FIG. 6 is a perspective view showing the structure, FIG. 6 is a perspective view showing the internal structure of the right-hand detection unit 4, FIG. 7 is a sectional view showing the internal structure of the fingertip part of the right-hand detection unit 4, and FIG. 8 is the same. FIG. 9 is a perspective view showing a configuration of a modified example of the first embodiment, FIG. 9 is an external configuration diagram when the player is wearing the second embodiment of the present invention, and FIG. 10 is a third embodiment of the present invention. FIG. 11 is an external configuration diagram when the player wears the example, and FIG. 11 is a diagram for explaining an example of arrangement of piezoelectric elements in the transducer of the third embodiment.
FIG. 2 is a block diagram showing the electrical configuration of the third embodiment. 8a-8c, 31 ... Potentiometer, 17a-17
d ... pressure sensitive element, 41a to 41d ... rotary encoder, 51a, 51b ... wave transmitter, 52a, 52b ...
Wave receiver, 70 ... Ultrasonic measuring circuit (above detection means), 2
2 ... CPU, 63 ... Music control data generation circuit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideo Suzuki Hideo Suzuki No. 10-1 Nakazawa-machi, Hamamatsu-shi, Shizuoka Nihon Gakki Co., Ltd. (56) Reference JP 57-135993 (JP, A) JP Sho 57-63404 (JP, A)

Claims (5)

[Claims] 1. A detection means for detecting a motion of "bending" or "turning" a human joint, and a detection range of the detection means is divided into a plurality of areas, and the detection result of the detection means is the plurality of areas. A tone control device for determining to which of the above, the tone control data for controlling the tone signal is output based on the determination result of the determining means. 2. A detection means for detecting a bending angle or a rotation angle of a part of a human body, a detection range of the detection means is divided into a plurality of areas, and a detection result of the detection means is in any one of the plurality of areas. A musical tone control device comprising: a discrimination unit for discriminating whether or not the musical tone signal belongs, and outputting musical tone control data for controlling a musical tone signal based on the discrimination result of the discrimination unit. 3. The musical tone control apparatus according to claim 2, wherein said detecting means is a potentiometer attached to a human body and detects a bending angle or a rotation angle of a joint portion. 4. The ultrasonic wave transmitting device and the ultrasonic wave receiving device, each of which is mounted on a part of a human body away from a joint, and between the ultrasonic wave transmitting device and the ultrasonic wave receiving device. The musical sound control device according to claim 2, wherein the musical sound control device is configured by an ultrasonic measurement circuit that detects a bending angle or a rotation angle of the joint based on an ultrasonic wave propagation time. 5. The detection means is provided at the tip of the fingertip of a stretchable glove and is constituted by a pressure-sensitive element that detects the bending angle of the fingertip based on the pressure received from the fingertip. The musical sound control device according to claim 2.