METHOD FOR EXTENDING THE FREQUENCY RANGE OF A BEAMFORMER WITHOUT SPATIAL ALIASING

摘要

A conferencing unit, comprising an array of microphones embedded in a diffracting object configured to provide a desired high frequency directivit y response at predetermined microphone positions, and a low frequency beamformer operab le 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. >