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Speech synthesizer and method for synthesizing speech for superposing and adding a waveform onto a waveform obtained by delaying a previously obtained waveform

  • US 5,381,514 A
  • Filed: 12/23/1992
  • Issued: 01/10/1995
  • Est. Priority Date: 03/13/1989
  • Status: Expired due to Term
First Claim
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1. A speech synthesizer comprising:

  • first indication means for indicating the amplitude of a waveform by using a random number;

    second indication means for indicating the superposition period for waveforms by using a random number;

    waveform generating means for generating a waveform having an amplitude indicated by said first indication means;

    waveform superposition means for superposing and adding the waveform generated by said waveform generating means onto a waveform obtained by delaying the waveform, which is previously generated by said waveform generating means, by a superposition period indicated by said second indication means; and

    output means for outputting the waveform added by said waveform superposition means as unvoiced speech.

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