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Speech encoding apparatus and related decoding apparatus

  • US 5,228,086 A
  • Filed: 05/06/1991
  • Issued: 07/13/1993
  • Est. Priority Date: 05/18/1990
  • Status: Expired due to Term
First Claim
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1. A speech encoding apparatus comprising:

  • means for analyzing a pitch of an input speech signal, deriving a basic waveform of a single pitch of the input speech signal and representing a frame of the input speech signal by said basic waveform of a single pitch;

    means for deciding a number of a pair or pairs of pulse elements of a desired framework representing the basic waveform of the single pitch of the input speech signal, and generating the desired framework in response to the basic waveform;

    means for encoding the generated desired framework;

    an inter-element waveform code book containing predetermined inter-element waveform samples which are identified by different identification numbers; and

    means for encoding inter-element waveforms which extend between the elements of the framework by use of the inter-element waveform code book.

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