Microphone apparatus

Details Microphone apparatus Microphone apparatus

2011-08-30

2011-08-30

Tran, Long (Department: 2829)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Plural or compound reproducers

C381S335000, C381S342000, C381S355000, C381S359000, C381S385000, C381S398000, C381S399000

Reexamination Certificate

active

08009845

ABSTRACT:
A microphone unit (1) has a first vibration plate. A support member (6) supports the microphone unit (1). A second vibration plate (5) is fixed to the support member (6) at a predetermined distance from the first vibration plate. An armoring body (2) covers the microphone unit (1), the support member (6) and the second vibration plate (5). A space surrounded by the support member (6), the first vibration plate and the second vibration plate (5) is a closed space (S1) with air kept therein.

REFERENCES:
patent: 2005/0089188 (2005-04-01), Feng
patent: 55-073195 (1980-06-01), None
patent: 05-18188 (1993-03-01), None
patent: 06-73991 (1994-10-01), None

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