Calibrated microelectromechanical microphone

Details Calibrated microelectromechanical microphone Calibrated microelectromechanical microphone

2007-09-25

2011-10-11

Thai, Luan C (Department: 2891)

Electrical audio signal processing systems and devices

Circuitry combined with specific type microphone or loudspeaker

With electrostatic microphone

C381S111000, C381S174000

Reexamination Certificate

active

08036401

ABSTRACT:
A MEMS microphone comprising a MEMS transducer having a back plate and a diaphragm as well as controllable bias voltage generator providing a DC bias voltage between the back plate and the diaphragm. The microphone also has an amplifier with a controllable gain, and a memory for storing information for determining a bias voltage to be provided by the bias voltage generator and the gain of the amplifier.

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European Extended Search Report—Dated Jan. 28, 2008.
European Standard Search Report—Dated Jan. 25, 2007.

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