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Systems, methods, and apparatus for estimating direction of arrival

  • US 9,354,295 B2
  • Filed: 03/15/2013
  • Issued: 05/31/2016
  • Est. Priority Date: 04/13/2012
  • Status: Active Grant
First Claim
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1. A method of processing a multichannel signal, said method comprising:

  • for a first pair of channels of the multichannel signal, calculating a first plurality of directional fitness measures, wherein each among the first plurality of directional fitness measures is based on a corresponding different one among a plurality of candidate directions;

    for a second pair of channels of the multichannel signal that is different than the first pair, calculating a second plurality of directional fitness measures, wherein each among the second plurality of directional fitness measures is based on a corresponding different one among the plurality of candidate directions; and

    based on the first plurality of directional fitness measures and the second plurality of directional fitness measures, selecting a first direction from among the plurality of candidate directions,wherein each of the first plurality of directional fitness measures is based on a difference, at a first frequency component of the multichannel signal, between the channels of the first pair,wherein each of the second plurality of directional fitness measures is based on a difference, at the first frequency component, between the channels of the second pair, andwherein said selecting the first direction from among the plurality of candidate directions comprises determining a minimum directional error among the first plurality of directional fitness measures and the second plurality of directional fitness measures.

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