Sealed microphone assembly

Details Sealed microphone assembly Sealed microphone assembly

1993-02-19

1994-11-15

Kuntz, Curtis

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Thermal response to, or generation of, sound vibration

381169, 381189, 381 91, H04R 2500

Patent

active

053655958

ABSTRACT:
A sealed microphone assembly is disclosed including a microphone (120), a microphone housing (110) having a cavity (116) being resonant at an audio frequency range, and a sealing membrane (130). The sealing membrane 130 covers the cavity 116, thereby making the microphone assembly (100) fully sealed. The attenuation caused by sealing the microphone assembly (100) is compensated by the resonant characteristic of the cavity (116). The cavity (116) also includes one or more apertures (112) for creating a bandpass response.

REFERENCES:
patent: 2627932 (1947-01-01), Vollumann et al.
patent: 2733302 (1956-01-01), Geib et al.
patent: 2828413 (1958-03-01), Bowers
patent: 3876843 (1975-04-01), Moen
patent: 4570746 (1986-02-01), Das et al.
patent: 4654883 (1987-03-01), Iwata
patent: 4845760 (1989-07-01), Awakowicz et al.
patent: 5208868 (1993-05-01), Sapiejewski

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