×

Voice Activity Detection and Pitch Estimation

  • US 20130231932A1
  • Filed: 08/20/2012
  • Published: 09/05/2013
  • Est. Priority Date: 03/05/2012
  • Status: Active Grant
First Claim
Patent Images

1. A method of detecting voice activity in an audible signal, the method comprising:

  • converting an audible signal into a corresponding plurality of time-frequency units, wherein the time dimension of each time-frequency unit includes at least one of a plurality of sequential intervals, and wherein the frequency dimension of each time-frequency unit includes at least one of a plurality of sub-bands;

    identifying at least one pulse pair in the plurality of time-frequency units having a relatively consistent spacing over multiple time intervals on a sub-band basis, wherein the presence of a pulse pair is indicative of voiced speech; and

    providing a voice activity signal indicator based at least in part on the presence of a pulse pair.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×