×

Method and apparatus for pitch estimation using perception based analysis by synthesis

  • US 5,999,897 A
  • Filed: 11/14/1997
  • Issued: 12/07/1999
  • Est. Priority Date: 11/14/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for estimating pitch of a speech signal comprising the steps of:

  • inputting a speech signal;

    generating a plurality of pitch candidates corresponding to a plurality of sub-ranges within a pitch search range;

    generating a first signal based on a segment of said speech signal;

    generating a reference speech signal based on the first signal;

    generating a synthetic speech signal for each of the plurality of pitch candidates; and

    comparing the synthetic speech signal for each of the plurality of pitch candidates with the reference speech signal to determine an optimal pitch estimate.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×