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Speech synthesis apparatus and method

  • US 20040073427A1
  • Filed: 08/20/2003
  • Published: 04/15/2004
  • Est. Priority Date: 08/27/2002
  • Status: Abandoned Application
First Claim
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1. A speech synthesizer having an output stage for converting a phonetic description to an acoustic output, the output stage including a database of recorded utterance segments, in which the output stage:

  • a. converts the phonetic description to a plurality of time-varying parameters;

    b. interprets the parameters as a key for accessing the database to identify an utterance segment in the database, and c. outputs the identified utterance segment;

    in which the output stage further comprises an output waveform synthesizer that can generate an output signal from the parameters, whereby, in the event that the parameters describe an utterance segment for which there is no corresponding recording in the database, the parameters are passed to the output waveform synthesizer to generate an output signal.

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