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Sound source localization using phase spectrum

  • US 9,435,873 B2
  • Filed: 07/14/2011
  • Issued: 09/06/2016
  • Est. Priority Date: 07/14/2011
  • Status: Active Grant
First Claim
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1. A computer-implemented process comprising:

  • receiving signals from a plurality of pairs of microphones into a memory;

    processing the signals from the microphones to identify when the signals are active;

    computing frequency spectrum data for the signals;

    for each pair of active signals;

    determining a phase spectrum of a cross power spectrum using the frequency spectrum data of the pair of active signals,determining a phase distortion for the pair from the phase spectrum, andderiving a candidate angle from the determined phase distortion; and

    selecting an angle from among the candidate angles derived for the plurality of pairs of microphones.

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