Electrostatic microphone

Details Electrostatic microphone Electrostatic microphone

1979-12-17

1982-03-23

Stellar, George G.

H04R 1904

Patent

active

043214320

ABSTRACT:
A condenser microphone includes a diaphragm, a stationary electrode and a supporting member which supports the diaphragm and the electrode in spaced parallel relationship. The supporting member is provided with an inner annular projection adapted to support the stationary electrode and an outer annular projection for supporting the diaphragm. An air chamber is defined between the inner and outer annular projections and communicated with an air gap between the diaphragm and the stationary electrode at the periphery of the air gap.

REFERENCES:
patent: 3300585 (1967-01-01), Reedyk et al.
patent: 3740496 (1973-06-01), Carlson et al.
patent: 3775572 (1973-11-01), Ishibashi et al.
patent: 3946422 (1976-03-01), Yagi et al.
patent: 3963881 (1976-06-01), Fraim et al.
patent: 4081626 (1978-03-01), Muggli et al.
patent: 4170721 (1979-10-01), Ishibashi et al.
patent: 4188513 (1980-02-01), Morrell et al.
Telesis, Nov. 1967, pp. 22-26, "Electret Telephone Transducers", Reedyk.

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