JPH0675605B2 - Music control device - Google Patents

Description

The present invention relates to a musical sound control device for detecting a human motion of "jumping" and controlling a musical sound.

“Prior Art” Conventionally, musical tones have been generated either by playing a musical instrument such as a piano, a violin, or a bass drum, or by using a vocal cord. However, the conversion of the human "jumping" motion into a musical sound has never been performed.

"Problem to be Solved by the Invention" Therefore, an object of the present invention is to provide a musical sound control device capable of converting a jumping motion of a human into a musical sound.

"Means for Solving Problems" The present invention is provided at a first height which is substantially the same height as when a person lands, and detects that the person is higher than the first height. And a second detecting means which is provided at a second height above the first detecting means by a predetermined distance and detects that a person is at a position higher than the second height. And after the detection by the first detecting means, the second
Time measuring means for measuring the time until the detection by the second detecting means, the detection result of the second detecting means, and the musical sound forming means for generating a musical sound controlled based on the time measured by the time measuring means. It is characterized by having and.

"Operation" According to the above configuration, the second detection means detects that the person is at a position higher than the second height, that is, the state that the person "jumps" at the second height or more. To do.

The time measuring means is provided with the second detector after the detection by the first detecting means.
The time to the detection means by the detection means, that is, the speed at which the person "jumps" is measured.

After all, the musical sound forming means generates a musical sound based on the operation speed of the person "jumping" after the person "jumps" more than the second height.

Therefore, it is possible to convert a person's "jumping" motion into a musical sound, more specifically, to generate a musical sound in conformity with a jumping motion accompanied by a rhythm such as aerobics or dance.

As a result, various unique effects can be obtained in rhythmic gymnastics and other fields.

[Embodiment] Hereinafter, a musical tone control apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a position detector of the musical tone control apparatus according to the first embodiment. In the figure,
Reference numerals 1 and 2 are stands, which are installed vertically on the floor. A light emitting element 3a such as an LED is provided at the bottom of the stand 1, and a similar light emitting element 4a is provided at the top. On the other hand, the stand 2 includes the light emitting element 3
The light receiving elements 3b and 4b such as photodiodes which form a pair of a and 4a are
The light-emitting elements 3a and 4a are provided at the same height as each other with their optical axes aligned. When a person M stands between the stands 1 and 2 arranged in this way, the light emitted from the light emitting elements 3a and 4a is blocked, and the output signals S1 and S2 of the light receiving elements 3b and 4b (Fig. 3 (a)). ，
(B), the horizontal axis in FIG. 3 indicates time, and the vertical axis indicates level), which are "L" levels. Further, at time t1, when the person M jumps up and his foot leaves the floor surface, the light from the light emitting element 3a is applied to the light receiving element 3b, and the signal S1 becomes "H" level. Next, at time t2, when the foot exceeds the height of the light receiving element 4b, the light from the light emitting element 4a is applied to the light receiving element 4b, and the signal S2 becomes "H" level. Next, at time t3, when the foot falls below the height of the light receiving element 4b again, the light from the light emitting element 4a is blocked, and the signal S2 becomes the “L” level.
Then, at time t4, when the person M lands on the floor, the light from the light emitting element 3a is blocked, and the signal S1 becomes "L" level. These signals S1 and S2 are input to the differentiating circuits 5 and 6 shown in FIG. 2, respectively. The differentiating circuit 5 is a circuit that differentiates the rising edge of the signal S1. That is, the differentiating circuit 5 outputs the pulse signal S3 at the moment when the foot of the person M leaves the floor surface.
(See FIG. 3C) is output. Also, the differentiating circuit 6
Is a circuit that differentiates the rising edge of the signal S2. That is, the differentiating circuit 6 outputs the pulse signal S4 (see FIG. 3D) when the foot of the person M exceeds the height of the light receiving element 4b. These signals S3 and S4 are applied to the set input terminal S and the reset input terminal R of the SR (set / reset) flip-flop 7, respectively. The SR flip-flop 7 is set at the rising edge of the signal S3 and reset at the rising edge of the signal S4. That is, the pulse width of the Q output signal S5 (see FIG. 3 (E)) of the SR flip-flop 7 corresponds to the speed at which the person M jumps. This signal S5
Is applied to one input terminal of the AND gate 8. The AND gate 8 has its gate opened by the signal S5 and outputs the clock pulse φ to the clock input terminal CK of the counter 9. The counter 9 is reset at the rising edge of the output signal S3 of the differentiating circuit 5 (at the time when the foot of the person M leaves the floor), counts up the clock pulse φ, and outputs count data. That is, the count data of the counter 9 (count data at the time when the signal S5 falls) corresponds to the speed at which the person M jumps. Then, this count data is supplied to the tone signal forming circuit 10 as tone control data. The tone signal forming circuit 10 takes in the count data of the counter 9 at the rising edge of the output signal S4 of the differentiating circuit 6, generates a tone signal having a pitch corresponding to the count data, and outputs the tone signal to the speaker 11 by the generated tone signal. To drive.

As described above, in this embodiment, the pitch of the musical sound is controlled based on the motion of “jumping”, particularly based on the jumping speed of the person M.

Although the pitch of the musical tone is controlled according to the count data of the counter 9 in the above embodiment, the tone length, tone color, volume, etc. of the musical tone may be controlled instead. Further, one of a plurality of tone color preset states may be selected according to the count data of the counter 9 in the above embodiment.

"Effects of the Invention" As described above, according to the present invention, a person "jumps"
The action can be converted into a musical sound. More specifically, it is possible to generate a musical tone in conformity with a jumping motion accompanied by a rhythm such as aerobics or dance.

As a result, various unique effects can be obtained in rhythmic gymnastics and other fields.

[Brief description of drawings]

FIG. 1 is a front view showing a position detecting portion of a musical tone control apparatus according to a first embodiment of the present invention, FIG. 2 is a block diagram showing a configuration of a musical tone control circuit in the same embodiment, and FIG. FIG. 3 is a waveform chart of signals of a musical sound control circuit in FIG. 3b, 4b: light receiving element, 9: counter, 10: tone signal forming circuit,

Claims (1)

[Claims] 1. A first detection means provided at a first height which is substantially the same height as when a person lands, and which detects that the person is at a position higher than the first height, A second detection unit which is provided at a second height above a predetermined distance from the first detection unit and detects that a person is at a position higher than the second height; A time measuring means for measuring the time from the detection to the detection of the second detecting means, a musical sound controlled based on the detection result of the second detecting means, and the time measured by the time measuring means. And a musical sound forming means for generating a musical sound.