Patent ID: 8175291
Filing Date: 2012-05-08
Classification: G10L

Abstract:
1. A method of processing an M-channel input signal that includes a speech component and a noise component, M being an integer greater than one, to produce a spatially filtered output signal, said method comprising: applying a first spatial processing filter to the input signal; applying a second spatial processing filter to the input signal; at a first time, determining that the first spatial processing filter begins to separate the speech and noise components better than the second spatial processing filter; in response to said determining at a first time, producing a signal that is based on a first spatially processed signal as the output signal; at a second time subsequent to the first time, determining that the second spatial processing filter begins to separate the speech and noise components better than the first spatial processing filter; and in response to said determining at a second time, producing a signal that is based on a second spatially processed signal as the output signal, wherein the first and second spatially processed signals are based on the input signal.