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Speech synthesis method and speech synthesizer

  • US 20020138253A1
  • Filed: 03/21/2002
  • Published: 09/26/2002
  • Est. Priority Date: 03/26/2001
  • Status: Active Grant
First Claim
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1. A speech synthesis method comprising:

  • storing a number of formant parameters in a storage, the formant parameters representing formant frequencies and windowing functions;

    selecting predetermined formant parameters from the formant parameters according to a phoneme symbol string;

    generating a plurality of sine waves based on the formant frequency corresponding to the formant parameters selected;

    multiplying the sine waves by the windowing functions corresponding to the selected formant parameters, respectively, to generate a plurality of formant waveforms;

    adding the formant waveforms to generate a plurality of pitch waveforms; and

    superposing the pitch waveforms according to a pitch period to generate a speech signal.

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