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Apparatus and quality enhancement algorithm for mixed excitation linear predictive (MELP) and other speech coders

  • US 6,453,287 B1
  • Filed: 09/29/1999
  • Issued: 09/17/2002
  • Est. Priority Date: 02/04/1999
  • Status: Expired due to Fees
First Claim
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1. A method of enhancing the speech quality of a speech coder encoded data transmission, comprising:

  • digitally sampling speech to create a speech waveform over a plurality of frames;

    identifying frames that contain a plosive signal distinguished from other transitory signals;

    analyzing the plosive signal to create plosive signal parameters;

    applying the plosive signal parameters to a linear prediction residual plosive signal to synthesize the plosive signal for frames that contain a plosive signal; and

    adding the synthesized plosive signal to the synthesized speech for the frame that contains the plosive.

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