Electret transducer with tapered acoustic chamber

Details Electret transducer with tapered acoustic chamber Electret transducer with tapered acoustic chamber

1980-02-22

1982-05-25

Stellar, George G.

H04R 1904

Patent

active

043318401

ABSTRACT:
An electret transducer wherein a backplate is mounted between inwardly disposed surfaces of a ridge protruding from a face of a frame, a diaphragm is mounted on the ridge, and an acoustic chamber, which is partially defined by the diaphragm, diminishes in size as it becomes more remote from an opening to it.

REFERENCES:
patent: Re28420 (1975-05-01), Murphy
patent: 3108162 (1963-10-01), Schindler
patent: 3436492 (1969-04-01), Reedyk
patent: 3772133 (1973-11-01), Schmitt
patent: 3833770 (1974-09-01), Atoji et al.
patent: 3894198 (1975-07-01), Murayama et al.
patent: 3963881 (1976-06-01), Fraim et al.
patent: 4142073 (1979-02-01), Agneus et al.
patent: 4160881 (1979-07-01), Smulders
patent: 4225755 (1980-09-01), Block
patent: 4236051 (1980-11-01), Nakagawa et al.

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