JPS5913670Y2 - Optical reproduction electronic organ - Google Patents

Description

[Detailed explanation of the invention] This invention optically records each note of a different scale on multiple recording bands of a transparent disk in advance, and generates a chord by reproducing each note of the scale individually using an optical system and an electrical system. This invention relates to an optically regenerated electronic organ that can perform the following functions.

More specifically, each note of a scale from low to high is optically recorded in advance in each recording band from the center to the periphery of a single transparent disk, and when each note of the scale is played back, the transparent disk is Rotate the disk and irradiate light from the top of the disk,
The sound of each scale of each recording band of the transparent disk is transmitted as an optical signal through independent optical fibers provided at the bottom of the disk, and has a shutter that conducts or deconducts the optical signal to be transmitted within the optical fiber. This relates to an optical reproducing electronic organ that is capable of producing chords by operating a keyboard, reproducing a conductive light signal through a charging element, an amplifier, and a speaker into the notes of each scale, and simultaneously generating the reproduced tones. .

BACKGROUND OF THE INVENTION With the development of electronics, electronic musical instruments using electronics technology have become widespread, and are used in the fields of professional music and music education as well as in the field of toy musical instruments.

In electronic musical instruments such as electronic organs and synthesizers, the sound source is composed of an electronic circuit with an oscillator, so they can generate not only the sounds of conventional instruments but also the sounds unique to electronic musical instruments. It has even become possible to create a variety of new sounds and music that could not be expressed with conventional musical instruments.

However, structurally, keyboard electronic instruments such as electronic organs have
It is well known that electronic organs and the like are extremely expensive musical instruments because they are manufactured to constitute a sound source circuit having one oscillator for each note of the scale.

However, in the case of a simple electronic organ such as a toy, only a few oscillators are used in the sound source circuit due to the constraint that the musical instrument must be manufactured at low cost.

Therefore, only a few types of sounds can be output, and for this reason, even if multiple keyboards are used, the sounds produced by each keyboard will be the same, and the pitches of those sounds will not be very accurate. There is a problem.

Therefore, even if this type of electronic organ is provided for the purpose of teaching children's sense of pitch, the electronic organ that can only produce the above-mentioned several types of sounds and is inaccurate may be extremely unsatisfactory for the user. It is clear that there is something.

The inventor of the present invention has developed the present invention in view of the above-mentioned problems with the conventional electronic organs for toys and the like, and to effectively solve the problems.

The purpose of the present invention is to provide a transparent disk on which each note of a musical scale is optically recorded on each of a plurality of recording bands, and to rotate the transparent disk and irradiate the transparent disk with light from above to record the plurality of recordings. A plurality of optical transmission bodies each independently transmitting the band scale as an optical signal, a shutter provided on a keyboard that conducts/disconnects the optical signal within the optical transmission body, and reception and conversion of the optical signal of the optical transmission body. and a photoelectric output device for reproducing each note of the scale.

With the above configuration, unlike conventional electronic organs, a sound source circuit having an oscillator for each note of the scale is not used, so it can be manufactured at an extremely low cost.
Since each note of the scale is recorded on each recording band of the transparent disk, it is possible to output the note represented by the keyboard each time the corresponding key is pressed, or it is possible to output several notes at the same time. To provide an optical regeneration type electronic organ which has the advantage of being able to produce chords.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is an explanatory diagram of the basic principle of the electronic organ according to the present invention, FIG. 2 is a detailed diagram of the shutter below the keyboard, and FIG. 3 is an overall perspective view showing an example of the electronic organ.

As already mentioned, FIG. 1 shows the basic principle of the present invention, and in the figure, 1 is a transparent disk.

A plurality of transparent optical recording bands 2 are sequentially formed on this disk 1 in the circumferential direction from the center O of the disk.

Each note of the scale is arranged in sequence and recorded separately for each recording band, so that low notes are recorded in the recording band near the center 0 of disk 1, and high notes are recorded in the recording band near the circumference of disk 1. do.

This transparent disk 1 on which musical scales are optically recorded becomes the sound source of the electronic organ according to the present invention.

Each note of the scale is optically recorded on the transparent disk 1, so when reading out this recorded information, the screen 1 is rotated and the light P is irradiated from the top of the screen 1 and arranged in a straight line at the bottom of the disk. The sound recorded on multiple optical transmission bodies is transmitted as an optical signal.

The light P emitted from above should preferably be non-pulsating light such as sunlight in order to output stable sound, and the intensity of the light may affect the strength of the sound played, so each recording It is arranged so that light of uniform intensity hits the band 2...

An optical fiber is used for the optical transmission body below the disk 1.

Optical fiber 3... is for each recording band 2 above.
Since it is provided corresponding to each of..., recording band 2...
The same number as ・ is required.

The optical fibers 3 pass through the lower part of the keyboard 4 corresponding to the sound to be transmitted, and after passing, are bundled and guided to a photoelectric element 5 (for example, a silicon photocell).

Each of the optical fibers 3... is provided with a cut portion 6 at the bottom of the keyboard 4... as shown in FIG.

The end portion 8 of the divided portion 7 on one side of the disk 1 and the end portion 10 of the divided portion 9 on the other side of the charging element 5 are in a straight line positional relationship and are installed at a constant interval.

A shutter 11 hanging down from the lower part of the keyboard 4a is disposed in the gap between the cut portions 6 so that the optical signal to be transmitted within the optical fiber 3 can be made conductive or non-conductive. .

A small hole 12 is provided in the center of the shutter 11, and when the optical signal is conducted, that is, when the keyboard 4a is pressed downward,
This small hole 12 is located between the two cut ends 8 and 10 of the optical fiber to allow the optical signal to pass therethrough.

Further, when the optical signal is not conducted, that is, when the keyboard 4a is not pressed, the shutter 11 blocks the transmission of the optical signal from the dividing section 7 to the dividing section 9.

The keyboard 4a is pivotally mounted, for example, at its base 4a', and is pressed upward by a coil spring (not shown in FIG. 2) at the pivot pin 13, and is normally counterbalanced by a stopper (not shown) or the like that regulates the upper limit. It is held horizontally to block the optical signal within the optical fiber 3, and when pressed, pivots downward against the elastic force so that the small hole 12 is in a position to conduct the optical signal. It is stopped by a stopper not shown.

The optical signal conducted through the small hole 12 of the shutter 11 is guided to the charging element 5, and after being converted into an electrical signal by the photoelectric element 5, it is amplified by the amplifier 15 and output from the speaker 16.

Since the optical fibers 3... can be bundled, one charging element 5 is sufficient.

FIG. 3 is an external perspective view showing a specific example of an electronic organ. In the illustrated example, a predetermined number of keyboards 4 are disposed laterally on the upper front side of the case 17, and an operation section 1 is provided on the upper surface of the case 17.
8. A transparent disk 1 including a speaker 16 and further covered with a transparent plate 19 is disposed.

Of course, there is freedom in the external shape, keyboard, layout of the operating section, etc.

In the above, when the operating switch 20 is turned on, the transparent disk 1 starts to rotate.

Next, when the light source switch 21 is turned on, the optical fibers 3 arranged linearly at the bottom of the disk 1...
Light is irradiated onto the top surface of the disk 1 from an electric light source 22 installed on the top of the disk 1 so as to face the.

As shown in FIG. 1, when the light P is irradiated onto the upper surface of the disc 1, the light P reads each sound of each recording band and transmits it to the optical fiber 3 below.

The optical signal is transmitted to the end 8 shown in FIG. 2, where it is blocked by a shutter 11.

Each sound is optically transmitted through an optical fiber 3 corresponding to the keyboard 4 representing the sound.

Therefore, for example, when the user presses the keyboard 4a, the shutter 11 shown in FIG. Sound is output.

Similarly, when the keyboard 4b is pressed, the organ sound "shi" is output, and when the keyboard 4C is pressed, the organ sound "mi" is output.

Also, keyboard 4a. If you press 4b, 4C, and 4d at the same time, the chords "Do, Mi, G" will be output.

In FIG. 2, another embodiment of the shutter 11 of the lower part of the keyboard 4a is shown by imaginary lines.

In this case, a coil spring is not used in the pivot portion 13, but a leaf spring portion 14 is provided instead, and the shutter 11 is formed integrally with the leaf spring portion 14.

Therefore, the shutter 11 may or may not be connected to the keyboard 4a.

When operating the keyboard 4a, the keyboard 4a is pressed downward against the upward elastic force of the leaf spring section 14.

In this case as well, a stopper is provided to set the small hole 12 at an appropriate position so as to conduct the optical signal.

Since the frequency of the sound is proportional to the rotational speed of the disc 1, it is also possible to raise or lower the overall pitch by adjusting the rotational speed of the disc 1 using the rotational speed adjustment dial 23 shown in FIG. be.

Further, since changes in the intensity of the irradiated light P affect changes in the level of the output sound, such as a loud sound when the light is strong and a soft sound when the light is weak, a light intensity adjustment dial 24 is provided. It allows for musical changes.

Of course, this can also be achieved by electrically adjusting the amplifier 15.

In the above explanation, the light source 22 is used to irradiate the disc 1 with light, but it is also possible to make the case plate transparent as shown in 19 and use sunlight to irradiate the disc 1. The light source 22 is constructed so that it can be moved from the upper surface of the disk 1 so as to be housed in the electronic organ case by various means.

Further, there are two types of optical recording methods: area type and density type, and the present invention is applicable to either method.

Further, although the disc of the electronic organ according to the present invention is optically recorded using the organ tone as the musical instrument sound, the sound to be recorded may be any type of musical instrument.

Tones may also be converted by preparing a plurality of disks prepared in advance and exchanging them; in this case, of course, means for exchanging each disc is formed in the case. .

As is clear from the above explanation, the easy-to-use electronic organ for toys and the like according to the present invention does not use a sound source circuit having an oscillator for each sound source that generates each sound. It can be produced at an extremely low cost because it uses a method of optically recording each sound separately and then reproducing it optically and electrically.

In particular, on a transparent disk, a separate recording band is formed for each note in the order of the scale, from the center to the periphery, and chords are created by reproducing each recorded note separately with a transmitter. By actively utilizing the principle that the frequency of sound is proportional to the rotational speed of the transparent disk, you can enjoy the change in sound by raising or lowering the overall sound. It is also possible to enjoy musical changes by adjusting the intensity of the emitted light, and what is more, this is achieved by installing a shutter in the middle of the optical transmission body that allows the optical signal to conduct or deconduct by operating the keyboard. It can be made with a simple and robust structure, an extremely small device, and can be manufactured at low cost.

Furthermore, since it is possible to optically record not only organ sounds but also the sounds of various instruments on transparent discs, by preparing multiple discs for each type of instrument, it is possible to record various instrumental sounds. The present invention is extremely practical as it exhibits various features such as making it possible to enjoy the performance of music, expanding the variety of performances, and enjoying a highly interesting performance.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is an explanatory diagram of the basic principle of an electronic organ, Fig. 2 is a detailed view of the shutter at the bottom of the keyboard, and Fig. 3 is an overall perspective view showing an example of an electronic organ. be. In the drawing, 1 is a transparent disk, 2 is a recording band, 3 is an optical fiber, 4 is a keyboard, 11 is a shutter, 12
2 is a small hole, and 22 is an electric light source.

Claims (1)

[Scope of utility model registration request] A transparent disk on which each note of a musical scale is optically recorded in each of a plurality of recording bands, and the transparent disk is rotated and light is irradiated onto the transparent disk to directly record the scales of the plurality of recording bands as optical signals. Multiple optical transmission bodies that transmit independently and optical signals within the optical transmission bodies can be connected and connected directly by keyboard operation.
1. An optical reproducing electronic organ comprising: a shutter that operates to cause non-conductivity; and a charging output device that receives and converts optical signals from the optical transmission body and reproduces each note of the scale.