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Signal encoding apparatus, signal decoding apparatus, recording medium, and signal encoding method

  • US 5,805,770 A
  • Filed: 06/14/1995
  • Issued: 09/08/1998
  • Est. Priority Date: 11/04/1993
  • Status: Expired due to Term
First Claim
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1. A signal encoding apparatus adapted for encoding an input signal,the apparatus comprising:

  • transforming means for transforming the input signal into frequency components;

    separating means for separating an output of the transforming means into a first signal consisting of tone characteristic components and a second signal consisting of other components;

    first encoding means for normalizing and quantizing the first signal to encode the first signal; and

    second encoding means for normalizing and quantizing the second signal to encode the second signal,wherein normalization coefficients for normalizing the first signal are set to an interval finer than that of normalization coefficients for normalizing the second signal.

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