Multiple input silent audio switch

Details Multiple input silent audio switch Multiple input silent audio switch

1985-04-12

1987-06-23

Rubinson, Gene Z.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Multiple channel

381 94, 381119, 200DIG34, G09B 504

Patent

active

046759050

ABSTRACT:
A silent audio switch provides switching between multiple audio sources while eliminating the "pop" caused by switching spikes. Two internal buses are used for each visible external bus, whereby a new audio signal is first switched to an off-air bus opposite an on-air bus, any switching spike is allowed to subside, and then a fast mix is made between the two buses to derive the new audio signal as the switch output signal.

REFERENCES:
patent: 3493681 (1970-02-01), Richards
patent: 4259742 (1981-03-01), Burns
patent: 4306114 (1981-12-01), Callahan
patent: 4448074 (1984-05-01), Schmidt
patent: 4493102 (1985-01-01), Weishaupt
patent: 4525820 (1985-06-01), Enoki

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