Patent ID: 8184180

Claim:
An audio/video (A/V) capture device, comprising: a video acquisition section configured to generate a video signal; video zoom control logic configured to control an amount of video zoom applied by the video acquisition section in generating the video signal; and an audio acquisition section comprising a microphone array configured to generate a plurality of microphone signals and a beamformer configured to modify a shape of a spatial directivity pattern of the microphone array responsive to a change in the amount of video zoom applied by the video acquisition section and to process the microphone signals in accordance with the spatial directivity pattern to generate an audio signal, the beamformer comprising: a first beamformer configured to output a first vector of sensor weights corresponding to a first spatial directivity pattern; a second beamformer configured to output a second vector of sensor weights corresponding to a second spatial directivity pattern, wherein a main lobe of the second spatial directivity pattern is narrower than a main lobe of the first spatial directivity pattern; first logic that determines a first weight and a second weight based on the amount of video zoom currently being applied by the video acquisition section; a first multiplier that applies the first weight to the first vector to produce a weighted version of the first vector; a second multiplier that applies the second weight to the second vector to produce a weighted version of the second vector; a combiner configured to combine the weighted version of the first vector and the weighted version of the second vector to produce a third vector of sensor weights corresponding to a third spatial directivity pattern; and second logic configured to apply the third vector of sensor weights to the microphone signals to generate the audio signal.