JPH0588631B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a musical tone control device that controls musical tone generation in accordance with body movements such as rhythmic gymnastics.

``Prior Art'' Conventionally, a rhythm station has been devised as a device for controlling musical tones in accordance with body movements such as in rhythmic gymnastics. This rhythm stake is equipped with angle detection means that outputs a signal corresponding to the angle at which the arm is raised. Then, the control signal generating means generates a tone control signal based on the output signal of the angle detecting means. This allows you to control the generation of musical sounds according to the angle at which you raise your arm, so if you hold the stick in your hand and move your hand freely, you can generate musical sounds whose pitch changes, for example, according to the movement of your hand. It is possible for this to occur.

FIG. 9 shows the external appearance of the above-mentioned rhythm stake, and FIG. 11 shows the electrical configuration of the musical tone generating circuit. In FIG. 9, the rhythm stake 1 is formed in a cylindrical shape, and a grip portion 1a is formed at one end, and an angle detector 2 as shown in FIG. 10 is attached inside the tip. It is being The angle detector 2 has four mercury switches 3, 4, 5, and 6 fixed to a substrate 2a at predetermined angles, and the angle detector 2 has four mercury switches 3, 4, 5, and 6 fixed to a substrate 2a at a predetermined angle.
mercury switch 3, corresponding to the angle it makes with the vertical line.
Any one of 4, 5, and 6 is turned on. In this case, the substrate 2a needs to be located within a plane that includes the vertical line. Mercury switch 3, 4,
Each electrode 3a, 3b, 4a, 4b, 5
a, 5b, 6a, 6b are connected to the musical tone generation control circuit 7 of FIG. 11 via lead wires 3c, 4c, 5c, 6c. The musical sound generation control circuit 7 detects the angle of the detector 2 with respect to the vertical line, that is, the angle of the operator H's arm with respect to the vertical line, based on the on/off state of the mercury switches 3 to 6, and converts this detection result into an angle. The data is sequentially output to the musical tone signal forming circuit 8 as data KD. The musical tone signal forming circuit 8 forms a musical tone signal having a pitch corresponding to the angle data KD, and outputs it to the speaker SP. As a result, the speaker emits a musical tone with a pitch corresponding to the angle of the operator H's arm.
Occurs from SP.

"Problems to be Solved by the Invention" By the way, when using the conventional rhythm stick 1 equipped with the above-mentioned angle detector 2, a mercury switch is used, so when the arm moves violently, the mercury breaks. The arm swing angle cannot be detected accurately. Therefore, there is a problem in that musical tone control operations are restricted, resulting in a lack of performance expressiveness.

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a musical tone control device that has no limitations on musical tone control operations and can improve performance expressiveness.

"Means for Solving the Problems" The present invention provides a musical tone control device for controlling musical tones generated by a musical tone generating device, which includes a light source whose light emitting direction can be arbitrarily controlled, a member held by an operator, and the member. a plurality of detection means attached to the light source for detecting the amount of incident light from the light source, and calculating angle data corresponding to the angle formed by the incident light and the member based on each detection result of the plurality of detection means. death,
The present invention is characterized by comprising a control means for converting the angle data into musical tone control information and outputting it to the musical tone generating device.

"Function" According to the above configuration, since musical tone control is performed by freely moving both the light source and the member provided with the detection means, variations in control modes are increased, thereby improving performance expressiveness.

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1A shows a cylindrical light-receiving stick 1-L used in the same embodiment, which is held in the left hand, but is made for both left and right use. Grip portion 1a- of this stake 1-L
A push button switch 9 is attached near L, and an optical sensor 10 shown in FIG. 2 is attached inside near the center. The circular substrate 10a of this optical sensor 10 has photodetector elements such as photodiodes PDA, PDB, PDC in the diametrical direction.
attached and centrally located PDB
PDA.PDC are placed at regular intervals from. Light receiving stake 1-L configured in this way
A cylindrical light emitting stick 1-R shown in FIG. 1B is used as a light source. This light-emitting stick 1-R is held in the right hand, but it is made for both left and right use, and a light-emitting element 11 such as an LED is attached inside the tip. The light receiving stake 1-L and the light emitting stake 1-R are directed toward a reflecting plate M such as a curtain mirror as shown in FIG.
The light receiving element receives the reflected light H from the light emitting element 11.
If the light is received by PDA, PDB, or PDC,
The inclination angle θ (clockwise direction is negative) between the reflected light H and the center line of the stake 1-L shown by the two-dot chain line, and each output of the light receiving elements PDA, PDB, and PDC.
The relationship between SA, SB, and SC is shown in Figure 4. That is, by changing the orientation of the light-emitting stake 1-R, the light-emitting direction is changed, and by changing the orientation of the light-receiving stake 1-L, the angle θ between the incident light and the light-receiving stake 1-L is changed.
will be changed. Next, in Figure 5,
The above signals SA, SB, SC are amplifiers 12, 13, 1
4 respectively. This amplifier 12, 13, 1
4 is composed of transistors etc.
Each signal SA, SB, SC is amplified and the output is supplied to a multiplex/A/D conversion circuit 15. The multiplex/A/D conversion circuit 15 selectively inputs one of the output signals of the amplifiers 12, 13, and 14 based on the selection data SD applied to its select terminal SEL, and adjusts the level of the input signal. is converted into digital data GD and output to the musical tone generation control circuit 16. The musical tone generation control circuit 16 is composed of a microprocessor or the like, and drives the light emitting element 11 via a drive amplifier 17 composed of a transistor or the like.
Using the output data GD of the D conversion circuit 15, the tilt angle θ of the stake 1-L is determined. Also, when switch 9 is detected to be on, the obtained angle θ is
(Musical Instrument Digital Interface) standard pitch data KC and output to the musical tone signal forming circuit 18. The musical tone signal forming circuit 18 forms a musical tone signal having a pitch corresponding to the pitch data KC output from the musical tone generation control circuit 16, and drives the speaker SP.
Reference numeral 19 denotes a ROM (read only memory) in which a predetermined program for instructing the operation of the musical tone generation control circuit 16 and an angle table (described later) that is referred to when determining the tilt angle θ of the stake 1-L are stored.
It is.

Next, the principle of calculating the inclination angle θ of the stake 1-L will be described. In Figure 4, Stakes 1
When the inclination angle θ of −L is negative, SA>SC, and the (SB/SA) ratio corresponds to the angle θ. Also,
If the tilt angle θ is positive, SC>SA,
The (SB/SC) ratio corresponds to the angle θ. Therefore,
Size relationship of SA and SC, (SB/SA) ratio, (SB/
SC) The angle θ can be found from the value of the ratio.
That is, the angle table in the ROM 19 mentioned above stores in advance data indicating the relationship between the angle θ and the (SB/SA) ratio and the relationship between the angle θ and the (SB/SC) ratio, and is used to control musical tone generation. The circuit 16 determines the magnitude of the signals SA, SC and (SB/
SA) or (SB/SC) value, converts these detection results into address data, and stores it in the ROM.
19 and read the angle data from the ROM 19.

Next, the overall operation of the above embodiment will be explained. First, the operator holds stake 1-R in his right hand and stake 1-L in his left hand, and while operating stake 1-L in the state shown in Figure 3, the outputs of the light receiving elements PDA, PDB, and PDC The base signal is multiplexed via amplifiers 12, 13, and 14.
The signal is supplied to the A/D conversion circuit 15. The musical tone generation control circuit 16 includes a multiplex/A/D conversion circuit 1
5, the selection data SD "0" is input to the amplifier 12, and the data GD based on the output of the amplifier 12 is input.Then, the selection data is input to the multiplex/A/D conversion circuit 15.
SD “1” and SD “2” are output in succession, and the amplifier 13,
Input the data GD based on 14 respectively. Then, based on each input data GD, the angle θ is determined from the angle table in the ROM 19. continuation,
The musical sound generation control circuit 16 repeats the above process at regular intervals, and when it detects that the switch 9 is turned on during the period, it creates pitch data KC according to the angle θ and outputs it to the musical sound signal forming circuit 18. Here, it is assumed that the angles θ are sequentially obtained as shown by the curve L1 in FIG. It is also assumed that the musical tone generation control circuit 16 detects that the switch 9 is turned on at time t1. In this case, the angle θ1 (x mark) found at time t1 can be estimated from previous measurement results to be an abnormal value due to the influence of disturbance. In such a case, instead of the angle θ1, the estimated angle θ2 (marked with ●) estimated from the past measured angles is used as the correct angle. and,
This angle θ2 is converted into pitch data KC and output to the musical tone signal forming circuit 18. According to this embodiment, when the operator swings the stick 1-L in the direction of the arrow R while pressing the switch 9, musical tones having various pitches are generated from the speaker SP. At this time, the stake 1-L is connected to the light receiving elements PDA, PDB,
If the PDC is swung in the straight direction in which the PDC is arranged (for example, in the direction of arrow R in FIG. 3), the range of the pitches of the generated musical tones will be expanded and it will be more effective.

In the above embodiment, the light emitting stake 1-R was used as the light source, but instead of this, ambient light from a spotlight, studio light, etc. may be used as the light source, as shown in FIG.
In addition, three light receiving elements PDA, PDB, and PDC were attached to the substrate 10a of the optical sensor 10, but instead of these, two more light receiving elements were attached as shown in FIG.
PDD and PDE may be added. In that case, the movement in the arrow X direction is detected by the light receiving elements PDA, PDB, and PDC, and the movement in the arrow Y direction is detected by the light receiving element.
It is recommended to detect using PDD, PDB, and PDE. In the above embodiments, the color of the light source is not particularly defined, but it is not limited to this. Color filters of red, green, blue, infrared, etc. are attached to the light sensor of the light receiving stake, and the swing angle of the light receiving stake and the light source are The generated musical tone may be controlled depending on the color of the light source, for example, depending on the tilt angle of the light receiving stake with a red filter relative to a red light source, or according to the tilt angle of the light receiving stake with a green filter relative to a green light source. , the pitch of musical tones having timbre T1 and timbre T2, respectively, may be controlled. Further, in the above embodiment, one operator operated the light emitting stake 1-R and the light receiving stake 1-L with respect to the reflector M, but the invention is not limited to this, and multiple operators can mutually emit light and receive light. You may also do so. Further, the reflector M does not need to be fixed in one place, and may be carried around by a person. Also,
In the above embodiment, the pitch of the generated musical tone is controlled according to the angle at which the stake 1-L is swung.
Alternatively, the volume of the generated musical tone may be controlled in accordance with the sum of the amounts of light received by the light receiving elements PDA, PDB, and PDC when the stick 1-L is swung.
Further, in the above embodiment, the musical tone generation control circuit 16 outputs the MIDI standard pitch data KC to the musical tone signal forming circuit 18 to generate musical tones. It may also be output to a standard electronic musical instrument or the like to generate musical tones.

"Effects of the Invention" As explained above, since musical tone control is performed by freely moving both the light source and the member provided with the detection means, variations in control modes are increased.
This makes it possible to improve performance expressiveness.

[Brief explanation of the drawing]

1A and 1B are side views of a light-receiving stake 1-L and a light-emitting stake 1-R used in an embodiment of the present invention, respectively, and FIG. 2 is a side view of a light-receiving stake 1-R used in an embodiment of the present invention.
-L is a front view of the optical sensor 10, FIG. 3 is a diagram showing the arrangement of the light receiving stake 1-L and the light emitting stick 1-R during operation, and FIG. 4 is a diagram showing the inclination angle θ of the light receiving stake 1-L and the light receiving element. PDA, PDB,
A diagram showing the relationship between each output signal SA, SB, and SC of the PDC, FIG. 5 is a block diagram showing the configuration of a musical tone control device according to an embodiment of the present invention, and FIG. A diagram showing the measurement results of θ,
7 is a diagram showing an example in which ambient light is used as a light source instead of the light emitting stake 1-R in FIG.
FIG. 9 is a front view of the rhythm stake 1 used in the conventional technique, FIG. 10 is a front view of the angle detector 2 in FIG. 9,
FIG. 11 is a block diagram showing the configuration of a conventional musical tone generator. 1-L...Light receiving stick, 1-R...Light emitting stick, 10...Light sensor, PDA, PDB,
PDC... Light receiving element, 11... Light emitting element, 12,
13, 14...Amplifier, 15...Multiplex/A/D conversion circuit, 16...Musical tone generation control circuit, 17...Drive amplifier, 18...Musical tone signal forming circuit, 19...ROM, M...Reflection Plate, H...Reflected light, GD, KC...Data.

Claims (1)

[Scope of Claims] 1. A musical tone control device that controls musical tones generated by a musical tone generating device, comprising: a light source whose light emission direction can be controlled arbitrarily; a member held by an operator; a plurality of detection means for detecting the light amount of the incident light; and angular data corresponding to the angle formed by the incident light and the member based on the detection results of the plurality of detection means, and the angle data is used to generate a musical tone. A musical tone control device comprising a control means for converting the control information into control information and outputting it to the musical tone generating device.