Electrostatic microphone with damping to improve omnidirectional

Details Electrostatic microphone with damping to improve omnidirectional Electrostatic microphone with damping to improve omnidirectional

1978-05-08

1979-04-24

Stellar, George G.

179179, 179180, H04R 120, H04R 1904

Patent

active

041513789

ABSTRACT:
An electret microphone in which the condenser unit of the microphone is contained within a cylindrical shell open at one end and mounted coaxially on a larger cylindrical casing at the other, the region surrounding the shell and extending to the casing having a mass of closed cellular plastic foam therein, and the open end of the casing being covered by a layer of open cellular foam plastic, the mass of closed cellular foam plastic and layer of open cellular foam plastic being contained within a wire grill.

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