JPS59165599A - Amplifier for stereophonic reproducer - 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] This invention connects a pitch-adjustable delay circuit to one of the stereo amblifiers, thereby converting monotonous sounds into flexible, majestic, and three-dimensional sounds. The present invention relates to an amplifier for a stereo playback device that allows the creation of a world of sound with a wide range of sounds through expression.

In the case of conventional AM radio, a receiver receives a single sound signal generated by a broadcasting station's transmission waves, amplifies it with an amplifier, and reproduces it with a speaker. The sound expressed in this case is that even if there are two speakers on the left and right, the same sound comes out at the same time, and the world of sound expressed here is monotonous. Therefore, the two sounds produce different sounds, and the sound A stereo amplifier has been developed that allows three-dimensional expression, but this uses a stereo record stylus (cartridge) to operate the stereo amplifier to amplify the stereo record. If you play it back through the left and right amplifier speakers, the left and right sounds will be output separately because the left and right speakers are recorded separately in stereo, and the sounds will be separated more than on a monaural record. By installing and operating the ambliator and speaker to match the channel record, a greater volume effect could be produced, which aroused new reactions in the listener. However, this type of stereo sound operation also has the disadvantage that the range of sound that can be expressed is narrow and the sound cannot be expressed in new and diverse ways, so that the three-dimensional effect cannot be fully utilized. Therefore, by connecting left and right speakers to such a monaural or stereo amblifier, all sound signals (electronic musical instruments, microphones, cassette tape recorders,
When a radio or other sound is input, the sounds that are amplified by the monaural or stereo amblifier and reproduced by the speakers are output at the same time and operate in the same way, so they cannot fully represent the acoustic effect that is being attempted. There was a drawback that it could not be done.

Therefore, the present invention connects a pitch-adjustable delay circuit to either the left or right amblifier in a stereo playback device, so that the sound of one of the stereo amblifiers is immediately reproduced by a speaker, and the sound of the other amblifier is The delay circuit adjusts the pitch and slows down the sound coming from the speakers connected to it, so that the sound signals to be played (all musical instruments, microphones, keyboards, cassette tape recorders, radios, etc.) are sent to the left and right. It is input to a stereo amblifier that has an amblifier, but by connecting a pitch-adjustable delay circuit to one of the amblifiers, the sound signal of the amblifier is operated to amplify the input and reproduce it. The other amblifier is connected with a delay circuit internally, and is activated with a delay of, for example, 0.01 seconds to 10 seconds, so that the sound that is adjusted slightly slower than the completely slow sound is played, so the sound is adjusted to be slightly slower. This product was developed with the aim of providing an amplifier for stereo playback equipment that can create a new, diverse, soft, and wide-ranging three-dimensional sound world.

Next, an embodiment of an amplifier for a stereo reproduction device according to the present invention will be described with reference to the drawings. In other words, Fig. 1 is a block diagram of a stereo playback device, and the sound signal input to the input section 1 is sent to the left and right Britone controls 2.
．． In a known stereo playback device that is amplified by a main pretone control 2' and a main pretone control 3.3° and a main amblifier 4.4' and reproduced by a speaker 5.5°, the right pretone control 2' and the main pretone control 3 are A delay circuit 6 that can adjust the temper is connected between the two.

In this way, sound signals from electronic musical instruments, microphones, cassette tape recorders, radios, and other sources are input to the input section 1, which is an input signal device, and are divided into the main amblifier 4 on the left and the main amblifier 4' on the right. The sound signal is split at the input section l and is amplified by the left main amblifier 4, and the sound signal output from the left speaker 5 operates normally and is played back. On the other hand, when the sound signal separated at the input section 1 is amplified by the main amblifier 4° on the right side, the delay circuit 6 connected between the Britone control 2° and the main pretone control 3° is used. is activated, and the signal sound from the input signal is output a little later with the pitch adjusted than the main amblifier 4 on the left side, which normally operates, so the viewer can listen with new acoustics, and therefore the sound is different from the conventional one. By inputting and amplifying the sound signal to the monaural or stereo amblifier, you can hear a new type of sound that is completely different from the sound reproduced by the speakers.

As described above, according to the amplifier for a stereo reproduction device according to the present invention, when the left and right amblifiers output one sound signal, the left main amblifier and speaker in particular can reproduce the sound normally as in the conventional case. On the other hand, in the main amblifier on the right, the characteristic of this invention is that a certain delay circuit is connected to reproduce the sound at a considerably slower or slightly slower time, creating a new world of sound. By arranging the delay circuit to enable staggered pitch adjustment, the acoustic effect expands from a monotonous sound world to a range that allows you to feel a soft, majestic three-dimensional sound. This means that when playing an electronic instrument, such as a synthesizer or a keyboard instrument using string unsampling, one amblifier will operate like a traditional amblifier, and the other amblifier will operate much or slightly slower (at different times). 0°1~
Since the sound is played back through the speakers with a delay of 10 seconds (delayed operation for 10 seconds), if one person is playing and the delay circuit is used to slow down the playback sound considerably, a three-dimensional effect similar to that of two people playing can be created. By reducing the degree of delay of the reproduced sound using the delay circuit, the effect is that the musical instrument sound is different from that of a conventional amblifier instrument.

[Brief explanation of the drawing]

The drawings show an embodiment of the assembler for a stereo reproduction device according to the present invention, and FIG. 1 is a block diagram and FIG. 2 is an explanatory diagram. l...Input section, 2.2'...Britone control, 3.3'...Main Britone control, 4
．． 4゛...Main ambulifier, 5.5°...
Speaker, 6...delay circuit. Patent Applicant: Soki Park

Claims (1)

[Claims] A pitch-adjustable delay circuit is connected to either the left or right amblifier in a stereo playback device, so that the sound of one of the amblifiers is immediately played back by the speaker, and the pitch of the other amblifier is adjusted by the delay circuit. An amplifier for a stereo playback device characterized by being adjusted to slow down the sound emitted from a speaker connected to the amplifier.