Audio apparatus having a karaoke function

Details Audio apparatus having a karaoke function Audio apparatus having a karaoke function

1995-06-27

1996-07-30

Kuntz, Curtis

Electrical audio signal processing systems and devices

Binaural and stereophonic

Broadcast or multiplex stereo

381 1, 381107, H04H 500

Patent

active

055419992

ABSTRACT:
An audio apparatus having a plurality of modes as a karaoke reproduction to superimpose a sound signal from a microphone on an audio signal from a stereo sound source. A subtracting circuit is provided which obtains the difference between left and right channel signals from the sound source. A first changeover circuit selectively outputs the left and right channel signals to first and second terminals in a combination in accordance with a mode. A second changeover circuit is connected to the output of the subtracting circuit and to at least one of the left and right channel signals and selectively outputs a subtraction signal and a signal on the line to which the second changeover circuit is connected, to a third terminal. A third changeover circuit selectively outputs signals at the first, second and third terminals to fourth and fifth terminals according to the modes.

REFERENCES:
patent: 4953212 (1990-08-01), Otsubo

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