Patent ID: 7864969
Filing Date: 2011-01-04
Classification: H04R

Abstract:
1. An apparatus including adaptive amplifier circuitry for a microphone array, comprising: input adaptive filter circuitry responsive to one or more input control signals and a plurality of analog microphone signals by providing a corresponding number of filtered input signals; signal combining circuitry coupled to said input adaptive filter circuitry and responsive to one or more combining control signals and said number of filtered input signals by providing a resultant signal selectively corresponding to one of output adaptive filter circuitry coupled to said signal combining circuitry and responsive to one or more output control signals and said resultant signal by providing an output signal; and feedback control circuitry coupled to said input adaptive filter circuitry, said signal combining circuitry and said output adaptive filter circuitry, and responsive to at least one of said number of filtered input signals and said output signal by providing said one or more input control signals, said one or more combining control signals and said one or more output control signals.