Directional capacitor microphone system

Details Directional capacitor microphone system Directional capacitor microphone system

1997-04-03

1999-01-19

Tran, Sinh

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Housed microphone

381191, 381113, H04R 2500

Patent

active

058622390

ABSTRACT:
In a capacitor microphone system for directional applications, an array of backplates of microphone cells are formed on a printed circuit (PC) board. A continuous strip of diaphragm is employed to cover each backplate. The diaphragm is stretched to create a uniform tension along its length, contributing to the objective of achieving a uniform gain by each microphone cell. In addition, the diaphragm is separated from the backplates by a relatively large distance such that the percentage deviation from such a distance from cell to cell is relatively small, again contributing to the objective of gain uniformity.

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