Utterance verification using word based minimum verification err

Details Utterance verification using word based minimum verification err Utterance verification using word based minimum verification err

1995-08-11

1998-02-10

MacDonald, Allen R.

395 249, 395 265, G10L 506

Patent

active

057178267

ABSTRACT:
A speech recognition method and apparatus which has a first stage to provide keyword hypotheses and a second stage to provide testing of those hypotheses by utterance verification. The utterance verification used has three separate models for each word: one keyword verification model, one misrecognition verification model, and one non-keyword verification model. Further, all three are developed independently of the recognizer keyword models. Because of this independence, the three verification models can be iteratively trained using existing speech data bases to jointly provide a minimum amount of verification errors.

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C. Lee, B. Juang, R. A. Sukkar, "A Vocabulary Independent Discriminatively Trained Method For Rejection Of Non-Keywords In SubWord Based Speech Recognition", European Conference on Speech Communication and Technology, Madrid, Sep. 1995, ISSN 1018-4074.
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R. C. Rose, et al. "A Training Procedure For Verifying String Hypotheses In Continuous Speech Recognition", IEEE May 1995, pp. 281-284.

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