Patent
1995-09-15
1998-04-07
MacDonald, Allen R.
395 241, 395 245, 395 247, 395 248, 395 249, 395 26, G10L 506
Patent
active
057374899
ABSTRACT:
In a speech recognition system, a recognition processor receives an unknown utterance signal as input. The recognition processor in response to the unknown utterance signal input accesses a recognition database and scores the utterance signal against recognition models in the recognition database to classify the unknown utterance and to generate a hypothesis speech signal. A verification processor receives the hypothesis speech signal as input to be verified. The verification processor accesses a verification database to test the hypothesis speech signal against verification models reflecting a preselected type of training stored in the verification database. Based on the verification test, the verification processor generates a confidence measure signal. The confidence measure signal can be compared against a verification threshold to determine the accuracy of the recognition decision made by the recognition processor.
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Chou Wu
Juang Biing-Hwang
Lee Chin-Hui
Rahim Mazin G.
Collins Alphonso A.
Lucent Technologies - Inc.
MacDonald Allen R.
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