Reversible anti-noise microphone

Details Reversible anti-noise microphone Reversible anti-noise microphone

1975-07-02

1977-02-22

Stellar, George G.

179179, H04R 102, H04R 138

Patent

active

040093557

ABSTRACT:
This microphone has two opposed faces. The sound to be picked up may be directed toward either one of the two opposed faces with equivalent electrical output from the microphone in either case. Since background noise impinges equally on both of the two opposed faces, its effect on the microphone diaphragm is self-canceling, and causes substantially zero output from the transducer.

REFERENCES:
patent: 2196342 (1940-04-01), Ruttenberg
patent: 2301638 (1942-11-01), Olson
patent: 2305598 (1942-12-01), Bauer

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