Adaptive amplifier circuitry for microphone array

Details Adaptive amplifier circuitry for microphone array Adaptive amplifier circuitry for microphone array

2011-01-04

2011-01-04

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Directive circuits for microphones

C381S071110

Reexamination Certificate

active

07864969

ABSTRACT:
Adaptive amplifier circuitry for a microphone array with alternative operating modes. In one mode, background noise is reduced when the speaker is in a near field position and a relatively quiet environment. In another mode, the microphone signals are amplified, with speech being boosted more than background noise, when the speaker moves from a near field position to a far field position.

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