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Code excitation linear predictive (CELP) encoder and decoder and code excitation linear predictive coding method

  • US 5,727,122 A
  • Filed: 02/09/1995
  • Issued: 03/10/1998
  • Est. Priority Date: 06/10/1993
  • Status: Expired due to Term
First Claim
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1. A code excitation linear predictive coding apparatus comprising:

  • excitation codebook means for selectively outputting an excitation code vector as an excitation source information of a speech signal; and

    code vector conversion circuit means for converting the excitation code vector selectively output from the excitation codebook means into a frequency characteristic determined at the time of output of said excitation code vector.

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