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Word-specific acoustic models in a speech recognition system

  • US 7,062,436 B1
  • Filed: 02/11/2003
  • Issued: 06/13/2006
  • Est. Priority Date: 02/11/2003
  • Status: Expired due to Fees
First Claim
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1. An acoustic model in a speech recognition system having a lexicon in which words map to phones modeled in the acoustic model, the acoustic model comprising:

  • a plurality of shared phone models modeling a plurality of shared phones used to transcribe words in the lexicon, the shared phone models and shared phones being shared among the words in the lexicon;

    a candidate word model modeling a word-specific phone representing a transcription of a portion of a candidate word in the lexicon, the word-specific phone replacing in a transcription of the candidate word one or more of the shared phones, the word-specific phone and the candidate word model being shared by fewer than all words in the lexicon that can be transcribed by the shared phones replaced by the word-specific phone.

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