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Method of controlling high-speed reading in a text-to-speech conversion system

  • US 20030004723A1
  • Filed: 01/29/2002
  • Published: 01/02/2003
  • Est. Priority Date: 06/26/2001
  • Status: Active Grant
First Claim
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1. A method of controlling high-speed reading in a text-to-speech conversion system including a text analysis module for generating a phoneme and prosody character string from an input text;

  • a prosody generation module for generating a synthesis parameter of at least a voice segment, a phoneme duration, and a fundamental frequency for said phoneme and prosody character string;

    a voice segment dictionary in which voice segments as a source of voice are registered; and

    a speech generation module for generating a synthetic waveform by waveform superimposition by referring to said voice segment dictionary, said method comprising the step of providing said prosody generation module with a phoneme duration determination unit that includes both a duration rule table containing empirically found phoneme durations and a duration prediction table containing phoneme durations predicted by statistical analysis and determines a phoneme duration by using, when a user-designated utterance speed exceeds a threshold, said duration rule table and, when said threshold is not exceeded, said duration prediction table.

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