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Reproducing velocity converting apparatus with different speech velocity between voiced sound and unvoiced sound

  • US 6,085,157 A
  • Filed: 09/12/1997
  • Issued: 07/04/2000
  • Est. Priority Date: 01/19/1996
  • Status: Expired due to Fees
First Claim
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1. A reproducing velocity converting apparatus comprising:

  • data recording means (1) for recording and holding a sound signal in the form of a digital signal;

    voiced sound/unvoiced sound deciding means (2) for deciding whether said sound signal is a voiced sound or an unvoiced sound in an arbitrary section of said sound signal which is held in said data recording means;

    speech velocity converting means (4) for a sound signal being read from said data recording means, said speech converting means outputting a sound as it is in a section which is decided to be an unvoiced sound part by said voiced sound/unvoiced sound deciding means, said speech velocity converting means outputting, by changing only a time length of the sound in the section which is decided to be a voiced sound part by said voiced sound/unvoiced sound deciding means,wherein said speech velocity converting means has means for controlling a reading of the sound signal from said data recording means, said controlling means uses a decision result of said voiced sound/unvoiced sound deciding means so as to control a voiced sound part reading address in accordance with the time length of the unvoiced sound part so that an output signal may provide a value which approximates to a desired reproducing velocity; and

    data output means (8) which can output a signal having a determined frame length of the output signal from said speech velocity converting means.

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