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ELECTRONIC APPARATUS FOR GENERATING BEAMFORMED AUDIO SIGNALS WITH STEERABLE NULLS

  • US 20120019689A1
  • Filed: 07/26/2010
  • Published: 01/26/2012
  • Est. Priority Date: 07/26/2010
  • Status: Active Grant
First Claim
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1. An apparatus having a front side and a rear side oriented in opposite directions along a first axis, and a right side and a left side oriented in opposite directions along a second axis that is perpendicular to the first axis, the apparatus comprising:

  • a first microphone, located near the right side, that generates a first signal;

    a second microphone, located near the left side, that generates a second signal;

    an automated null controller that generates a null control signal based on an imaging signal;

    a beamforming module, coupled to the first microphone, the second microphone, and the automated null controller, that processes the first signal and the second signal based on the null control signal to generate;

    a right beamformed audio signal having a first directional pattern having at least one first null, anda left beamformed audio signal having a second directional pattern having at least one second null,wherein a first angular location (α

    ) of the at least one first null and a second angular location (β

    ) of the at least one second null is steered based on the null control signal.

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