JPH0673552B2 - Music control device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a musical tone control device that controls musical tone generation in accordance with body movements such as rhythmic gymnastics.

BACKGROUND ART The applicant of the present invention has devised a musical tone control device as shown in FIG. 5 as an instrument for controlling musical tone in accordance with body movements such as rhythmic gymnastics. In the figure, the symbol W indicates an operator H.
Is a fitting for covering the upper half of the body, and a right elbow detector 1 and a left elbow detector 2 are mounted on the right elbow portion and the left elbow portion of the fitting W, respectively. Further, a glove-type wearing tool F is fitted on the right hand of the operator H, and a right wrist detector 3 is attached to a wrist portion of the wearing tool F. Each of these detectors 1, 2, 3 is composed of a volume, etc., and the shaft of each volume rotates according to the bending and stretching of each elbow or the bending and stretching of the right wrist, and the detection signal corresponding to the bending angle is output. To do. The output signals of the detectors 1, 2 and 3 are supplied to the control signal transmitter 5 via the cables 1a, 2a and 3a. The control signal transmitter 5 is attached to the waist of the operator H by the waist band 4, inputs the output signals of the detectors 1, 2, and 3 and compares the level of each signal with a predetermined value. Then, for each signal, when the level is above a predetermined value, when the key-on signal is below a predetermined value,
Each key-off signal is created and supplied to the tone generator 6 wirelessly. The tone generator 6 has key-on signals KO1, KO2, KO3, key-off signals KF1, KF2, based on the outputs of the detectors 1, 2, and 3 described above.
The KF3 is reproduced, and the tone signal having the first tone color is generated / stopped by the key-on signal KO1 and the key-off signal KF1, and similarly, the key-on signals KO2, KO3, and the key-off signals KF2, KF3.
Generation of tone signals having second and third tones respectively
Stopping is performed to generate / stop a musical sound having each tone color from the speaker SP.

In the above configuration, when the operator H bends both elbows and the right wrist and bends and stretches each at a predetermined angle, the musical tones having the above-described first to third tones are generated from the speaker SP / Stop.

[Problems to be Solved by the Invention] By the way, in the above-described conventional tone control apparatus, the operator H
As a result of moving around, the radio wave may momentarily be in a defective state, and the key-off signal may not be able to arrive at the tone generator 6. In this case, the key-off signal is not received while the musical sound is being generated, and the musical sound generator 6 continues to generate the musical sound.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a musical tone control device capable of reliably generating a key-off signal even when the reception state deteriorates.

"Means for Solving Problems" The present invention relates to a motion detecting means which is attached to a human body and detects a motion of the human body, and an ON signal or an OFF signal is generated based on the output of the motion detecting means, and the constant signal is generated. A transmitting unit that wirelessly transmits each time a time elapses, a receiving unit that receives a signal transmitted from the transmitting unit, and a musical sound is generated based on an ON signal received by the receiving unit,
The interval between the tone generation means for stopping the generation of the tone based on the received off signal and the reception signal by the reception means is measured, and the signal transmitted by the transmission means arrives at the reception means based on the measurement result. An abnormality detecting means for determining whether or not there is an incoming call abnormality of the signal by judging whether there is an incoming call, and when the abnormality detecting means detects an incoming call abnormality, instructing the musical tone generating means to stop the generated musical tone. Is characterized by.

"Operation" In the tone control device according to the present invention, the ON signal or the OFF signal is continuously transmitted from the transmitting means at a constant time interval. Therefore, by measuring the time interval of the received signal, it is possible to detect the abnormal reception (unreceived signal).

[Embodiment] Hereinafter, a musical tone control apparatus according to an embodiment of the present invention will be described with reference to the drawings. The same members as those described in the related art will be denoted by the same reference numerals and the description thereof will be omitted. FIG. 1 is a block diagram showing a configuration of a control signal transmitter 7 corresponding to the control signal transmitter 5 shown in FIG. 5, and reference numerals 1, 2, and 3 denote the above-mentioned right elbow, left elbow, and It is a detector for the right wrist. The output signals of the detectors 1, 2, 3 are supplied to the selector 8. The selector 8 selects one of the output signals of the detectors 1, 2 and 3 based on the selection data SD applied to the select terminal SEL and outputs it to the A / D converter 9. The A / D converter 9 converts the level of the input signal into digital data GD, and outputs the converted data GD to the CPU 10 via the bus line B. CPU10
Generates transmission data XD consisting of 2 bytes shown in FIG. 3 based on the data GD output from the A / D converter 9 and outputs it to the transmission circuit 11. Here, the transmission data XD is
As shown in the figure, key-on data K indicating key-on
(1 bit), detector data P (2 bits) indicating the distinction between the detectors 1 to 3, repetition interval data N (4 bits) for detecting a transmission abnormality, and count data M (4 bits). There is. The transmission circuit 11 sends the carrier wave to the CPU 1
It is modulated by the data XD output from 0, and this modulated signal is transmitted from the antenna 12. Next, 13 is a ROM (read-on memory) in which a predetermined program for instructing the operation of the CPU 10 is stored. Reference numeral 14 denotes a RAM (random access memory) used as a work area in accordance with the operation of the CPU 10.

Next, FIG. 2 is a block diagram showing the structure of the receiving unit.
In this figure, 15 is an antenna for receiving a signal transmitted from the antenna 12 shown in FIG. 1, and 16 is a receiving circuit.
This receiving circuit 16 amplifies the signal reaching the antenna 15
By detecting, the original data XD is reproduced and output to the tone generation control circuit 17. The tone generation control circuit 17 stores the repeating interval data N and the circuit data M included in the data XD in an internal memory, and also outputs the key-on data K and the detector data P to the tone signal forming circuit 18, respectively. Further, the time interval at which the data XD is output from the receiving circuit 16 is constantly measured, and the measurement result and the above-mentioned data N,
The presence or absence of transmission abnormality is detected based on M. When a transmission abnormality occurs, the detector data P indicating the detectors 1 to 3 related to the abnormality and the key-on data K “0” (indicating key-off) are output to the tone signal forming circuit 18. In addition,
The abnormality detection will be described in detail later. Tone signal forming circuit 18
Has three sound source circuits respectively corresponding to the detectors 1 to 3. Then, when the detector data P indicating the detector 1 and the key-on data K "1" are respectively supplied, the sound source circuit corresponding to the detector 1 is turned on. As a result, the sound source circuit is driven, and a musical sound is generated from the speaker SP. Further, when the detector data P indicating the detector 1 and the key-on data K "0" are supplied, the tone generator circuit is turned off. The sound source circuits corresponding to the detectors 2 and 3 are similarly driven.

With the above configuration, the CPU 10 (Fig. 1) is operated for a fixed time (several meters).
Data “0” is sent to the selector 8 every time (s to 100 msec)
~ Outputs "2". As a result, the output signals of the detectors 1 to 3 are sequentially output from the selector 8, and these signals are A /
The data is converted into digital data (hereinafter referred to as data GD1 to GD3) by the D converter 9 and output to the bus line B. The CPU 10 writes these data GD1 to GD3 in the RAM 14. Next, the CPU 10 reads the data GD1 from the RAM 14, and the ROM
The threshold data SH1 previously stored in 13 is compared. Then, if GD1> SH1, “1” is written, and if GD1 ≦ SH1, “0” is written as the key-on data K in the transmission data area set in the RAM 14. next,
Data "1" indicating the detector 1 is written as detector data P in the same area. Then RO corresponding to the detector 1
The repeat interval data N1 and the number-of-times data M1 previously stored in M13 are written in the same area. Then CPU1
0 outputs the transmission data XD1 created by the above process to the transmission circuit 11. The transmission circuit 11 puts this data XD1 on a carrier wave and transmits it from the antenna 12. Then CPU10
Generates transmission data XD2, XD3 respectively corresponding to the data GD2, GD3 by the same process as above, and sequentially outputs it to the transmission circuit 11. The transmission circuit 11 puts these data XD2 and XD3 on a carrier wave and sequentially transmits them from the antenna 12.

Therefore, the above-described operation is performed every time a predetermined time has passed as described above, and therefore, the carrier wave carrying the data XD1 to XD3 is repeated every time a predetermined time passes.
Sent from.

Next, the receiving circuit 16 receives the above-mentioned carrier wave via the antenna 15, demodulates the data XD1 to XD3 from the received signal, and sequentially outputs the demodulated data XD1 to XD3 to the musical sound generation control circuit 17. The tone generation control circuit 17 detects abnormal transmission and outputs the key-on data K and the detector data P included in the data XD1 to XD3 to the tone signal forming circuit 18. The tone signal forming circuit 18 drives the tone generator circuit based on these data K and P.

Next, detection of a transmission abnormality performed in the musical sound generation control circuit 17 will be described. First, it is assumed that the transmission circuit 11 sequentially transmits transmission data XD1 indicating key-on or key-off at intervals t1 as shown in FIG. At this time,
The interval t1 is written as the repeat interval data N in the second byte of the transmission data XD1. Musical tone generation control circuit 17
When this data XD1 is first received, it detects the interval t1 by referring to the data N of the second byte, and thereafter checks whether or not the data XD1 arrived at the interval t1. When the data XD1 has not arrived at the time when it should originally arrive, the data M of the second byte of the previously received data XD1 is referred to. If this data M is 1, the tone generation control circuit
17 corresponds to the detector 1 when it is determined that the data XD1 has not arrived yet, and when the data M is 2 that the non-arrival has been detected twice in succession. The detector data P and the key-on data K “0” are set to the tone signal forming circuit 17
Output to. For example, when the tone generation control circuit 17 receives the data XD1 as shown in FIG. 4B and the data M is 2, the tone generation control circuit 17 detects the non-arrival of the data XD1 at each time. No abnormality is caused and the sound generation of the sound source circuit corresponding to the detector 1 is continued as shown in FIG.

On the other hand, FIGS. 4 (d), (e), and (f) correspond to the data XD2, and the tone generation control circuit 17 uses the data XD2.
In response to this, the interval t2 is detected by referring to the data N as described above, and then it is checked whether or not the data XD2 arrives at the interval t2. For example, when the non-arrival of the data XD2 is detected and the reference data M is 1 as shown in FIG. 4 (e), the musical tone generation control circuit 17 immediately determines that it is abnormal and responds to the detector 2. The detector data P and the key-on data K “0” are output to the tone signal forming circuit 18. As a result, the sound generation of the sound source circuit corresponding to the detector 2 is stopped as shown in FIG.

In the above embodiment, it is effective to set the repeated transmission interval of the transmission data XD according to the response speed of the movement of each part of the human body. For example, in the case of finger movement, about 50 ms (fast),
In the case of shoulder movement, setting about 300 ms is effective. Further, by setting the transmission interval to the predetermined interval in this way, the receiving side does not need to be aware of the interval of each part.
Further, although the configuration of the transmission data XD is as described above in the above embodiment, the configuration of the transmission data XD is not limited to this.

"Effects of the Invention" As described above, when the tone control device according to the present invention is used, the ON signal or the OFF signal is continuously transmitted at a constant time interval. Therefore, by measuring the time interval of the received signal, It is possible to detect an abnormality in the incoming call, and when the abnormality is detected, the tone generation of the musical tone generation means is stopped. The effect that it can be prevented is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a control signal transmitter 7 used in an embodiment of the present invention, FIG. 2 is a block diagram showing a configuration of a musical tone generating device used in the embodiment, and FIG. FIG. 4 is a diagram showing the structure of the data XD, FIG. 4 is a waveform diagram for explaining the operation of the tone control device according to one embodiment of the present invention, and FIG. 5 is a diagram for explaining the tone control device as the background art. is there. 1,2,3 …… Detector, 8 …… Selector, 9 …… A / D converter, 10 …… CPU, 11 …… Transmission circuit, 12 …… Transmission antenna, 15 …… Reception antenna, 16 …… Reception Circuit, 17 ... Music tone control circuit, 18 ... Music signal forming circuit.

Claims (1)

[Claims] 1. A motion detecting means which is attached to a human body and detects a motion of the human body, and an ON signal or an OFF signal is generated based on an output of the motion detecting means, and the ON signal or the OFF signal is wirelessly transmitted every time a predetermined time elapses. A transmitting means; a receiving means for receiving the signal transmitted from the transmitting means; and a musical sound for generating a musical sound based on the ON signal received by the receiving means and for stopping the generation of the musical sound based on the received OFF signal. An interval between signals generated by the generation unit and the reception unit is measured, and based on the measurement result, it is determined whether or not the signal transmitted by the transmission unit is received by the reception unit to detect an abnormal reception of the signal. An abnormality detecting means, wherein when the abnormality detecting means detects an incoming call abnormality, the tone generating means is instructed to stop the generated tone. .