Patent ID: 7778425
Filing Date: 2010-08-17
Classification: G10L,H04R

Abstract:
1. A method, comprising: providing M microphone signals or M digital microphone signals in response to an acoustic signal, wherein M is a finite integer of at least a value of two; generating each of T+1 intermediate signals in response to the M microphone signals or to M digital microphone signals and providing said T+1 intermediate signals to each of one or more noise post-filters of a beamformer wherein the beamformer is a polynomial beamformer having predetermined beam shape filter characteristics in response to noise control signals, wherein T is a finite integer of at least a value of one and the T+1 intermediate signals contain spatial information of the M microphone signals or M digital microphone signals; generating N noise control signals by each of one or more beam shape control blocks of the beamformer and providing each of said N noise control signals to a corresponding one of the one or more noise post-filters, wherein N is a finite integer of at least a value of one; and generating each of one or more noise reference signals by the corresponding one of the one or more noise post-filters and providing each of said one or more noise reference signals to a corresponding one of one or more adaptive filter blocks of one or more adaptive interference cancellers, for providing one or more output target signals for generalized sidelobe canceling and the number of said M microphone signals or M digital microphone signals, said T+1 intermediate signals and said noise post-filters are independent of each other.