Low acceleration sensitivity microphone

Details Low acceleration sensitivity microphone Low acceleration sensitivity microphone

2007-05-08

2007-05-08

Lacyk, John P. (Department: 3735)

Surgery

Surgically implanted vibratory hearing aid

C381S071200, C181S175000

Reexamination Certificate

active

11097113

ABSTRACT:
An implanted microphone is provided that has reduced sensitivity to vibration and attendant acceleration forces. In this regard, the microphone differentiates between the desirable and undesirable components of a transcutaneously received signal. More specifically, the present invention utilizes an output that is indicative of acceleration forces acting on the implanted microphone (e.g., an acceleration signal) to counteract and/or cancel the effects of acceleration induced pressures in an output signal of a microphone diaphragm. This may be done in a variety of ways, including but not limited to, pneumatically, mechanically, electrical analog, or digitally, or combinations thereof. In one arrangement, the generated output may be filtered to match the an acceleration response of the output signal of the microphone diaphragm such that upon removal of the motion signal from the microphone output, the remaining signal is an acoustic signal.

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