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System and method of speech recognition for non-native speakers of a language

  • US 7,640,159 B2
  • Filed: 07/22/2004
  • Issued: 12/29/2009
  • Est. Priority Date: 07/22/2004
  • Status: Active Grant
First Claim
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1. A method for speech recognition of input speech in a language from a non-native speaker, the method comprising acts of:

  • generating one or more feature vectors based upon one or more voice-induced electrical signals that result from the input speech;

    generating a first-language phoneme sequence from the one or more feature vectors based upon a first-language acoustic model, wherein the first-language acoustic model corresponds to a first language;

    determining a second-language speech segment from the first-language phoneme sequence based upon a second-language lexicon model, wherein the second-language lexicon model corresponds to a second language that is different from the first language;

    determining a confidence score associated with a combination of the first-language acoustic model and the second-language lexicon model; and

    selecting the first-language acoustic model from a plurality of acoustic models based at least in part on the determined confidence score, each of the plurality of acoustic models corresponding to a different respective language.

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