×

CELP post-processing for music signals

  • US 8,577,673 B2
  • Filed: 09/15/2009
  • Issued: 11/05/2013
  • Est. Priority Date: 09/15/2008
  • Status: Active Grant
First Claim
Patent Images

1. A method of receiving a decoded audio signal comprising a transmitted pitch lag, the method comprising:

  • estimating pitch correlations of possible short pitch lags that are smaller than a minimum pitch limitation and have an approximated multiple relationship with the transmitted pitch lag;

    checking if one of the pitch correlations of the possible short pitch lags is large enough compared to a pitch correlation estimated with the transmitted pitch lag;

    selecting a short pitch lag as a corrected pitch lag if a corresponding pitch correlation is large enough; and

    perform pitch related postprocessing using the corrected pitch lag.

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