Multiple-channel audio reproduction apparatus

Details Multiple-channel audio reproduction apparatus Multiple-channel audio reproduction apparatus

1990-10-04

1993-03-23

Dwyer, James L.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Center channel

381 22, 381 63, 381 59, 381121, H04R 500, H04R 2900, H03G 300, H03F 2100

Patent

active

051970996

ABSTRACT:
A multiple-channel audio reproduction apparatus has an audio demodulator for demodulating an input signal to produce audio signals for multiple channels. One or more signal-processing circuits process audio signals of one or more of these channels in a way suitable for reproduction by loudspeakers connected to other channels. Switches feed the processed audio signals to output terminals for those other channels. A switch controller turns these switches on if a loudspeaker is not connected to the channel corresponding to the original, unprocessed signal, and otherwise turns these switches off.

REFERENCES:
patent: 4034158 (1977-07-01), Britton
patent: 4392019 (1983-07-01), Halliday
patent: 4481660 (1984-11-01), de Koning et al.
patent: 4887298 (1989-12-01), Haigler
patent: 4949384 (1990-08-01), Noro
patent: 4968154 (1990-11-01), Baeg
patent: 5014320 (1991-05-01), Nagi
patent: 5034996 (1991-07-01), Carey et al.
"Sound System Suitable for High Definition Television" Kurozumi et al, The Journal of the Institute of Television Engineers of Japan, vol. 42, No. 6, 1988.

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