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Dynamic language model for speech recognition

  • US 5,384,892 A
  • Filed: 12/31/1992
  • Issued: 01/24/1995
  • Est. Priority Date: 12/31/1992
  • Status: Expired due to Term
First Claim
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1. A method of speech recognition in a speech recognition system comprising the following steps:

  • a. determining acoustic features in a sound sample;

    b. upon commencing said determination of said acoustic features, determining possible combinations of words which may be recognized by said speech recognition system and storing said possible combinations of words as a current language model, said current language model being generated from a plurality of speech rules each comprising a language model and an associated action, each said language model in each of said plurality of speech rules including a plurality of states, words defining transitions between said plurality of states, and terminal states;

    c. upon the completion of said generation of said current language model, recognizing words comprising said acoustic features by traversing states in said current language model until reaching said terminal states in said current language model; and

    d. subsequent to said step of recognizing words, determining a matched speech rule from said plurality of speech rules used to create said current language model and said words and performing said action associated with said matched speech rule.

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