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Text-to-speech method and system, computer program product therefor

  • US 8,121,841 B2
  • Filed: 12/16/2003
  • Issued: 02/21/2012
  • Est. Priority Date: 12/16/2003
  • Status: Active Grant
First Claim
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1. A method for text-to-speech conversion of a text in a first language comprising sections in at least one second language, comprising the steps of:

  • converting said sections in said second language into phonemes of said second language;

    mapping at least part of said phonemes of said second language onto sets of phonemes of said first language;

    including said sets of phonemes of said first language resulting from said mapping in the stream of phonemes of said first language representative of said text to produce a resulting stream of phonemes; and

    generating a speech signal from said resulting stream of phonemes,wherein said step of mapping comprises;

    carrying out non-acoustic similarity tests between each phoneme of said phonemes of said second language being mapped and a set of candidate mapping phonemes of said first language, said similarity tests performing a category-to-category comparison between a vector representative of phonetic categories of each of said phonemes of said second language and a vector representative of phonetic categories of each of said set of candidate mapping phonemes, said similarity test being independent of said first language and said second language;

    assigning respective scores to the results of said tests; and

    mapping each said phoneme of said second language onto a set of mapping phonemes of said first language selected from said candidate mapping phonemes as a function of said scores.

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