System and method for speech verification using a robust...

Details System and method for speech verification using a robust... System and method for speech verification using a robust...

2006-09-05

2006-09-05

McFadden, Susan (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S251000

Reexamination Certificate

active

07103543

ABSTRACT:
The present invention comprises a system and method for speech verification using a robust confidence measure, and includes a speech verifier which compares a confidence measure for a recognized word to a predetermined threshold value in order to determine whether the recognized word is valid, where a recognized word corresponds to a word model that produces a highest recognition score. In accordance with the present invention, the foregoing confidence measure may be calculated using the recognition score for the recognized word, a background score of a worst recognition candidate, and a pseudo filler score that may be based upon selected average recognition scores from an N-best list of recognition candidates.

REFERENCES:
patent: 5737489 (1998-04-01), Chou et al.
patent: 5842163 (1998-11-01), Weintraub
patent: 6850886 (2005-02-01), Abrego et al.
patent: 2001/0049600 (2001-12-01), Abrego et al.

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