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Dynamic speech recognition pattern switching for enhanced speech recognition accuracy

  • US 6,631,348 B1
  • Filed: 08/08/2000
  • Issued: 10/07/2003
  • Est. Priority Date: 08/08/2000
  • Status: Expired due to Fees
First Claim
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1. A speech recognition system comprising:

  • a speech capturing device configured to capture an input utterance;

    a speech recognition processing mechanism configured to process said input utterance captured by said speech capturing device and to generate an identified utterance signal representing a recognized utterance;

    a sensor configured to detect a plurality of ambient noise levels and to supply a detected ambient noise level to said speech recognition processing mechanism; and

    a speech model containing a plurality of stored reference pattern sets representing utterances to be recognized, each of said stored reference pattern sets based on training information corresponding to a select one of said ambient noise levels;

    wherein, in response to receiving said input utterance and said detected ambient noise level, said speech recognition processing mechanism switches to a stored reference pattern set corresponding to said detected ambient noise level, determines a recognized utterance based on said corresponding stored reference pattern set, and generates a corresponding identified utterance signal.

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