Patent attributes
A device for wind noise reduction and spatial noise reduction comprises a first microphone for capturing a nominal speech signal, and a second microphone for capturing a nominal noise signal. The device has a generalized sidelobe canceller for spatial noise reduction, comprising a blocking matrix filter configured to adaptively process the nominal speech signal to produce a speech cancellation signal, a first subtraction node for subtracting the speech cancellation signal from the nominal noise signal to produce a noise reference signal, a noise cancellation filter configured to adaptively filter the noise reference signal to produce a noise cancellation signal, and a second subtraction node for subtracting the noise cancellation signal from the nominal speech signal to produce a speech reference signal. The device has a wind noise reduction module for wind noise reduction, the wind noise reduction module comprising at least one filter derived from the blocking matrix filter of the generalized sidelobe canceller.
