Sound system employing automatic proportional amplification

Details Sound system employing automatic proportional amplification Sound system employing automatic proportional amplification

1985-10-15

1986-07-01

George, Keith E.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

381 85, H04R 2700

Patent

active

045984182

ABSTRACT:
A sound system for use in government council chambers, corporate board rooms, and the like employs low level switching of the audio signal to selectively attenuate the audio output of a given speaker or group of speakers as a function of the source of that audio signal.

REFERENCES:
patent: 3508007 (1970-04-01), Goodall et al.
patent: 3992584 (1976-11-01), Dugan
patent: 4068092 (1978-01-01), Ikoma et al.
patent: 4184048 (1980-01-01), Alcaide
patent: 4449238 (1984-05-01), Lee et al.

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