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Microphone array apparatus

  • US 7,035,416 B2
  • Filed: 10/26/2001
  • Issued: 04/25/2006
  • Est. Priority Date: 06/26/1997
  • Status: Expired due to Term
First Claim
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1. A microphone array apparatus comprising:

  • a microphone array including microphones;

    a signal estimator which estimates positions of a plurality of estimated microphones in accordance with intervals at which the microphones are arranged by using output signals of the microphones and a velocity of sound and which outputs further output signals of the plurality of estimated microphones estimated to be at the positions together with the output signals of the microphones forming the microphone array; and

    a synchronous adder which aligns phases of the output signals of the microphones and the further output signals of the plurality of estimated microphones and then adds the output signals and the further output signals.

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