Discriminative utterance verification for connected digits...

Details Discriminative utterance verification for connected digits... Discriminative utterance verification for connected digits...

G - Physics

10

L

G10L 15/22 (2006.01) G10L 15/14 (2006.01) G10L 15/10 (2006.01)

Patent

CA 2181205

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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