Method for extending the frequency range of a beamformer without spatial aliasing
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United States of America Patent
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Jul 15, 2008
Grant Date -
Jun 24, 2004
app pub date -
Dec 15, 2003
filing date -
Dec 16, 2002
priority date (Note) -
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Abstract
A conferencing unit, comprising an array of microphones embedded in a diffracting object configured to provide a desired high frequency directivity response at predetermined microphone positions, and a low frequency beamformer operable to achieve a desired low frequency directivity response, wherein the beamformer is linearly constrained to provide a smooth transition between low and high frequency directivity responses.
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