Stereophonic sound system

Details Stereophonic sound system Stereophonic sound system

1973-07-09

1976-05-25

Olms, Douglas W.

H04R 500

Patent

active

039595900

ABSTRACT:
A stereophonic sound system where a plurality of audio signals produced at the program source are encoded to two channels for recording or transmission, and then decoded at playback to produce a plurality of acoustical signals corresponding to those received at the program source. The playback apparatus cooperates with a stereo signal source and includes a plurality of playback channels, the playback channels including gain controlled amplifiers adapted to be coupled to respective loudspeakers. Each of the gain controlled amplifiers is controlled by a control voltage generator that produces a control voltage, the magnitude of which is determined by specified loudness level, phase, and/or waveform characteristics of the signals in the playback channels.

REFERENCES:
patent: 2098561 (1937-11-01), Beers
patent: 3082381 (1963-03-01), Morrill et al.
patent: 3126445 (1964-03-01), Golonske et al.
patent: 3164676 (1965-01-01), Brunner
patent: 3184550 (1965-05-01), Rogers
patent: 3280258 (1966-10-01), Curtis

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