Patent ID: 8379875
Filing Date: 2013-02-19
Classification: H01Q,H04R

Abstract:
1. A method, comprising: receiving an acoustic signal for generating M corresponding microphone signals, wherein M is a finite integer of at least a value of two; generating T+1 intermediate signals and a reference input signal in response to said M microphone signals or to M digital microphone signals by a beamformer and providing the T+1 intermediate signals to a target post-filter of the beamformer and the reference input signal to a complementary adder of a complementary noise separation filter, wherein T is a finite integer of at least a value of one; generating a target signal by the target post-filter and providing said target signal to the complementary adder and to an adder of an adaptive interference canceller; generating a noise reference signal by subtracting the target signal from the reference input signal using the complementary adder and providing said noise reference signal or an equalized noise reference signal to an adaptive filter block of the adaptive interference canceller for providing an output target signal by performing adaptive noise canceling in the target signal by the adaptive interference canceller to provide generalized sidelobe canceling; generating a noise cancellation adaptive signal by the adaptive filter block and providing said noise cancellation adaptive signal to the adder; and generating said output target signal using the adder in the adaptive interference canceller by subtracting the noise cancellation adaptive signal from the target signal, wherein the output target signal is provided to the adaptive filter block for continuing an adaptation process and for generating a further value of the output target signal.