Large-vocabulary speech recognition method, apparatus, and...

Data processing: speech signal processing – linguistics – language – Speech signal processing – Recognition

Reexamination Certificate

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C704S242000, C704S009000

Reexamination Certificate

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07627474

ABSTRACT:
A speech recognition method including: layering a central lexicon in a tree structure with respect to recognition-subject vocabularies; performing multi-pass symbol matching between a recognized phoneme sequence and a phonetic sequence of the central lexicon layered in the tree structure; and selecting a final speech recognition result via a Viterbi search process using a detailed acoustic model with respect to candidate vocabularies selected by the multi-pass symbol matching.

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Korean Office Action dated Apr. 27, 2007, issued in corresponding Korean Patent Application No. 10-2006-0012529.
L. Fissore et al., “Very large vocabulary isolated utterance recognition: a comparison between one pass and two pass strategies”, pp. 203-206, (1988).

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