Microphone array apparatus

Details Microphone array apparatus Microphone array apparatus

2006-04-25

2006-04-25

Mei, Xu (Department: 2644)

Electrical audio signal processing systems and devices

Directive circuits for microphones

C381S122000, C381S091000

Reexamination Certificate

active

07035416

ABSTRACT:
A microphone array apparatus includes a microphone array including microphones, one of the microphones being a reference microphone, filters receiving output signals of the microphones, and a filter coefficient calculator which receives the output signals of the microphones, a noise and a residual signal obtained by subtracting filtered output signals of the microphones other than the reference microphone from a filtered output signal of the reference microphone and which obtain filter coefficients of the filters in accordance with an evaluation function based on the residual signal.

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