Acoustic-electric transducer, electronic device, method, and...

Details Acoustic-electric transducer, electronic device, method, and... Acoustic-electric transducer, electronic device, method, and...

2008-05-15

2011-12-20

Lee, Calvin (Department: 2892)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Detail of mechanical vibration coupling to transducer

C381S418000

Reexamination Certificate

active

08081782

ABSTRACT:
An acoustic-electric transducer for a microphone may include a cavity delimited by a wall and having an opening; a diaphragm having an outer boundary, said diaphragm extending across said opening so that an air gap is provided transversely outwards of the diaphragm between said outer boundary of said diaphragm and said cavity wall; and an actuator configured to adjust a size of said air gap.

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patent: 2007/0195976 (2007-08-01), Sekino et al.
patent: 2008/0212807 (2008-09-01), Wang
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International Search Report and the Written Opinion of the International Searching Authority corresponding to PCT/EP2008/064314, Feb. 11, 2009, 10 pages.

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