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SPEECH SYNTHESIS SYSTEM, SPEECH SYNTHESIS PROGRAM PRODUCT, AND SPEECH SYNTHESIS METHOD

  • US 20090070115A1
  • Filed: 08/15/2008
  • Published: 03/12/2009
  • Est. Priority Date: 09/07/2007
  • Status: Active Grant
First Claim
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1. A speech synthesis system for synthesizing speech from text, comprising:

  • a speech segment database for storing data of speech segments having prosody information;

    means for entering a text to be speech-synthesized;

    means for determining a speech segment sequence corresponding to the input text from the speech segment database so as to minimize a cost including at least a frequency slope likelihood cost on the basis of a statistical model of prosody variations;

    means for determining prosody modification values so as to minimize a cost including at least the frequency slope likelihood cost and a prosody modification cost on the basis of the statistical model of prosody variations regarding the determined speech segment sequence; and

    means for applying the determined prosody modification values to the determined speech segment sequence.

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