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Adaptive filter pitch extraction

  • US 20060095256A1
  • Filed: 12/09/2005
  • Published: 05/04/2006
  • Est. Priority Date: 10/26/2004
  • Status: Active Grant
First Claim
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1. A system for extracting pitch from a speech signal having voiced and unvoiced segments, the system comprising:

  • a discrete input;

    a delay unit that digitally delays a speech signal received through the discrete input; and

    an adaptive filter coupled to the delay unit, where filter coefficients derived from the adaptive filter are used to estimate the pitch of the speech signal.

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