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Method and system for adaptive speech recognition in a noisy environment

  • US 6,418,411 B1
  • Filed: 02/10/2000
  • Issued: 07/09/2002
  • Est. Priority Date: 03/12/1999
  • Status: Active Grant
First Claim
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1. A method of speech recognition comprising the steps of:

  • performing a one time channel adaptation of initial Hidden Markov Models for all successive speech utterances to provide channel adapted Hidden Markov Models;

    determining background noise for each utterance in a time period adjacent speech to be recognized;

    adapting channel adapted Hidden Markov Models to the determined background noise for each utterance to get channel and noise adapted target Hidden Markov Models; and

    recognizing speech adjacent to the determined background noise using said channel and noise adapted target Hidden Markov Models.

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