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Synthesizing speech by converting phonemes to digital waveforms

  • US 5,970,454 A
  • Filed: 04/23/1997
  • Issued: 10/19/1999
  • Est. Priority Date: 12/16/1993
  • Status: Expired due to Term
First Claim
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1. A method of converting an input signal representing a text in phonemes into an output digital waveform signal convertible into an acoustic synthesized speech waveform corresponding to said text, wherein said method makes use of a two-part database having an access section based on strings of phonemes and an output section containing digital waveforms corresponding to the linked access sections, wherein said method comprises:

  • matching a segment of said input signal to select the best match of strings contained in the access section said best match including an exact match for at least one internal phoneme, anddiscarding at least the first and last phonemes of said best match to identify a shorter string of phonemes which is an exact match for a portion of said input signal.

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