JPS63121092A - Musical tone generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a musical tone generator that converts changes in light into musical tones.

"Prior Art" Conventionally, musical tones have been generated either by playing various musical instruments such as the piano, violin, and bass drum, or by using the human vocal cords.

``Problems to be solved by the invention'' By the way, in recent years, there have been attempts to give visual effects to concerts using laser beams, etc. However, there was no attempt to organically combine visual effects and music.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a musical tone generator capable of organically combining visual effects and musical effects by converting changes in light into musical sounds.

"Means for Solving the Problem" The first invention is provided with a detection means for detecting the presence or absence of light, and a musical tone signal generation means for generating a musical tone signal in response to the detection result of the detection means. It is something.

A second aspect of the invention is provided with a detection means for detecting the presence or absence of light and the irradiation position thereof, and a musical tone generating means for generating a musical tone signal corresponding to the detection result of the detection means.

A third aspect of the invention is provided with a detecting means for detecting the amount of light and a musical tone generating means for generating a musical tone signal corresponding to the detection result of the detecting means.

"Operation" According to the first invention, musical tones can be generated or stopped depending on the presence or absence of light, and according to the second invention, various sounds can be generated or stopped depending on the presence or absence of light at each position. Musical tones can be generated, and furthermore, according to the third invention, different musical tones can be generated depending on the intensity of light.

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

In FIG. 1, reference numeral 1 represents a performer, and 2 represents a light source. This light source 2 has a function of emitting a light beam forward using a power source such as a battery, and is configured so that the ON/OFF of the light beam and the light m can be adjusted based on the will of the performer l. There is.

Further, reference numeral 3 is a light detection section. A pattern 4 resembling a keyboard of a musical instrument is drawn on the inside of this light detection section 3, and at positions corresponding to each key in this keyboard-like pattern 4, N light-receiving elements as shown in FIG. 2 are drawn. Element 5
k (k=l−N) are respectively provided. These light receiving elements 5 are configured to output electrical signals according to the amount of light irradiated from the light source 2.
Each functions as a detection means for detecting the amount of light and the presence or absence of light, and by collecting N pieces,
It also functions as a detection means for detecting the position of the light beam. In addition, in this embodiment, the adjacent light-receiving elements 5k and 5 have false detections (malfunctions such as erroneously detecting light beams that should be detected by adjacent light-receiving elements).
In order to prevent this, a polarizing plate or the like is provided on the detection surface of each light receiving element 5 to restrict the incidence of light from directions other than a predetermined direction.

Next, with reference to FIG. 2, a circuit for converting the output from the light receiving element 5 into a musical tone will be explained.

The output from each of the light receiving elements 5 is input to N input terminals of a selector 6, and the output of the selector 6 is converted into a digital signal by an AD converter 7 and sent to a processing circuit 8. is being supplied to. This processing circuit 8 has N corresponding to the number of light receiving elements 5.
Scanning is performed by sequentially and repeatedly supplying selection data SD of rlJ to rNJ to the selector 6 in time-division time slots. That is, rlJ is sent from the processing circuit 8 to the selector 6 as selection data SD.
When "2" is entered manually, the output of the light receiving element 5-1 corresponding to this selection data SD is input to the AD converter 7, and when "2" is input as the selection data SD, the output of the light receiving element 5-1 is inputted to the AD converter 7.
The output of the light receiving element 5 corresponding to the selection data SD is sequentially input to the AD converter 7.
is supplied to the processing circuit 8 as detected data VD.

Then, the processing circuit 8 detects whether the detection data VD input in each time-division time slot exceeds a predetermined threshold value and performs the next process. That is, when the data VD exceeds the threshold value, a key-on signal K ON ("l" signal) is output to the musical tone forming circuit 9, and the detected data VD is used as musical tone control data CD to form a musical tone. The selection data SD at that time is further outputted to the tone forming circuit 9 as a key code KC. On the other hand, when the detected data VD is smaller than the threshold value, the above-mentioned data KON, CD, and KC are not output (
KON, CD, and KC are all “0”).

As a result, the position irradiated with the light from the light source 2 is represented by the key code KO (selection data SD), the fact that the light is irradiated is represented by the key-on signal KON, and the intensity and amount of light are also represented. ) is represented by musical tone control data CD (value of detection data VD).

In this way, each data K output from the processing circuit 8
The musical tone forming circuit 9 to which ONSCD and KC are supplied forms a musical tone signal with a pitch corresponding to the key code KC according to the key-on signal KON, and also changes the tone, volume, etc. of this musical tone signal in accordance with the musical tone control data CD. control, and outputs the formed musical tone signal to the speaker 10.

In the device configured as described above, when the player l irradiates a light beam from the light R2 onto the keyboard pattern 4 of the light detection unit 3, the light beam is emitted at a pitch corresponding to the position of the key irradiated and at a light intensity. A musical tone with a tone or volume corresponding to the tone is generated from the speaker.

"Modified Embodiments of the Invention" (i) The pattern drawn on the light beam detection section is not limited to a pattern imitating a keyboard as in the above embodiment, but may also be a pattern imitating another musical instrument. good. Also,
The size of the pattern and the spacing between the light receiving elements may be changed as appropriate depending on the distance from the player.

(ii) In the above embodiment, the photodetector was configured to operate only with the optical signal input from the light source, but on the contrary, the photodetector was configured to be able to detect light rays over a wide range. By configuring this, it is possible, for example, to generate musical tones that correspond to changes in the lighting in a performance venue.

(iii) Since the light-receiving element applied to the above embodiment has a characteristic that the output level changes depending on the amount of received light, it is possible to change the output level by slightly changing the light amount of the light source or by changing the angle of the light source By changing the angle of incidence of the light beam (resulting in a change in the amount of light received by the light receiving element 5), it is possible to achieve subtle changes in volume, such as changes in the touch of a musical instrument such as a piano, or the vibrato of a stringed instrument. It is also possible to do so.

(iv) In the above embodiment, the pitch of the musical tone was controlled according to the position of light irradiation, but instead, the tone, volume, etc. of the musical tone were controlled according to the position of light irradiation. It's okay.

In addition, different musical instrument sounds (for example, percussion instrument sounds such as cymbals, bass drums, triangles, etc., or piano sounds, guitar sounds, etc.) can be applied to each light receiving element.
It is also possible to allocate musical instrument sounds such as ', etc.', and control the pronunciation (and volume, etc., if necessary) of the musical instrument sounds assigned to each light-receiving element by the output of each light-receiving element. .

"Effects of the Invention" As explained above, according to the present invention, a new musical expression is possible by using a playing method that uses light, instead of the conventional playing method that involves operating a keyboard etc. with fingers. This has the effect of making it possible to combine the musical effect and the visual effect of light at a concert.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view showing the external appearance of the device, and FIG. 2 is a block diagram. ! ...Operator, 2...Light source, 3...
...Light detection section, 4...Keyboard pattern,
5k... Light receiving element, 8... Processing circuit,
9...Tone formation circuit, 10...Speaker.

Claims (3)

[Claims] (1) A musical tone generating device comprising a detecting means for detecting the presence or absence of light, and a musical tone signal generating means for generating a musical tone signal in response to the detection result of the detecting means. (2) A musical tone generating device comprising a detecting means for detecting the presence or absence of light and the irradiation position thereof, and a musical tone generating means for generating a musical tone signal corresponding to the detection result of the detecting means. (3) A musical tone generating device comprising a detecting means for detecting the amount of light and a musical tone generating means for generating a musical tone signal corresponding to the detection result of the detecting means.