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Speech recognition system for natural language translation

  • US 5,293,584 A
  • Filed: 05/21/1992
  • Issued: 03/08/1994
  • Est. Priority Date: 05/21/1992
  • Status: Expired due to Term
First Claim
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1. A speech recognition system comprising:

  • means for displaying a source text comprising one or more words in a source language;

    an acoustic processor;

    for generating a sequence of coded representations of an utterance to be recognized, said utterance comprising one or more words in a target language different from the source language;

    means for generating a set of one or more speech hypotheses, each speech hypothesis comprising one or more words from the target language;

    means for generating an acoustic model of each speech hypothesis;

    means for generating an acoustic match score for each speech hypothesis, each acoustic match score comprising an estimate of the closeness of a match between the acoustic model of the speech hypothesis and the sequence of coded representations of the utterance;

    means for generating a translation match score for each speech hypothesis, each translation match score comprising an estimate of the probability of occurrence of the speech hypothesis given the occurrence, of the source text;

    means for generating a hypothesis score for each hypothesis, each hypothesis score comprising a combination of the acoustic match score and the translation match score for the hypothesis;

    means for storing a subset of one or more speech hypotheses, from the set of speech hypotheses, having the best hypothesis scores; and

    means for outputting at least one word of one or more of the speech hypotheses in the subset of speech hypotheses having the best hypothesis scores.

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