Pitch delay modification during frame erasures

  • US 5,699,485 A
  • Filed: 06/07/1995
  • Issued: 12/16/1997
  • Est. Priority Date: 06/07/1995
  • Status: Expired due to Term
First Claim
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1. A method for use in a speech decoder which falls to receive reliably at least a portion of each of first and second consecutive frames of compressed speech information, the speech decoder including a codebook memory for supplying a vector signal in response to a signal representing pitch-period information, the vector signal for use in generating a decoded speech signal, the method comprising:

  • storing a signal having a value representing pitch-period information corresponding to said first frame; and

    incrementing said value of said signal for use in said second frame, such that said codebook memory supplies a vector signal in response to the incremented value of said signal.

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