Detection and control of diaphragm collapse in condenser...

Details Detection and control of diaphragm collapse in condenser... Detection and control of diaphragm collapse in condenser...

2005-05-20

2009-06-16

Mei, Xu (Department: 2614)

Electrical audio signal processing systems and devices

Circuitry combined with specific type microphone or loudspeaker

With electrostatic microphone

C381S111000, C381S174000

Reexamination Certificate

active

07548626

ABSTRACT:
A condenser microphone is provided having a transducer element. A diaphragm has an electrically conductive portion. A back-plate has an electrically conductive portion. A DC bias voltage element is operatively coupled to the diaphragm and the back-plate. A collapse detection element is adapted to determine a physical parameter value related to a separation between the diaphragm and the back-plate. A collapse control element is adapted to control the DC bias voltage element based on the determined physical parameter value.

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