US 2010/0245624 A1 · SPATIALLY SYNCHRONIZED AUDIO AND VIDEO CAPTURE

Abstract

An audio/video (A/V) capture device and method that capture audio and video in a spatially synchronized manner. In one implementation, the device and method automatically adjust the shape of a spatial directivity pattern of a microphone array used for acquiring audio so that the pattern is spatially synchronized with an amount of video zoom being applied by a video acquisition section to acquire video. For example, a wider spatial directivity pattern may automatically be used during wide-angle shots and a narrower spatial directivity pattern may automatically be used during close-ups. This beneficially allows for the consistent attenuation of audio signals received from audio sources that lie outside the field of view of the video acquisition section while passing or even enhancing audio signals received from audio sources that lie within the field of view even though the width of the field of view has changed.

Claims22

Dependent claims

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.

3 more elements

A method, comprising:

monitoring an amount of video zoom applied by a video acquisition section of an A/V capture device in generating a video signal;
modifying a shape of a spatial directivity pattern of a microphone array of the A/V capture device responsive to a change in the amount of video zoom applied by the video acquisition section;
receiving a plurality of microphone signals from the microphone array;
and
processing the microphone signals in accordance with the modified spatial directivity pattern to generate an audio signal.

2 more elements

Dependencies are inferred from the claim text.

Spatially synchronized audio and video capture

Life of this patent

Spatially synchronized audio and video capture

Life of this patent

Abstract

Claims22