Method of and apparatus for deriving a plurality of sequences of

Details Method of and apparatus for deriving a plurality of sequences of Method of and apparatus for deriving a plurality of sequences of

1997-09-26

1999-11-16

Dorvil, Richemond

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

704253, G10L 708

Patent

active

059874090

ABSTRACT:
The determination of a plurality of sequences of words from a speech signal with a decreasing probability of correspondence utilizes the best word sequence as a basis and as further word sequences there are determined only those which enclose a part of the best word sequence, that is to say the remainder of these word sequences. To this end, the recognition involves first the formation of a word graph and the best word sequence is separately stored as a tree which initially has one branch only. The word boundaries of this word sequence form nodes in this tree. Because only nodes of this tree have to be taken into account for the next-best word sequences, the calculation is substantially simpler than if the complete word graph were first completely expanded in the form of a tree and completely searched again for each new word sequence.

REFERENCES:
patent: 4980918 (1990-12-01), Bahl et al.
patent: 5623609 (1997-04-01), Kaye et al.
patent: 5634083 (1997-05-01), Oerder
"A Word Graph Based N-Best Search in Continuous Speech Recognition", Bach-Heip Tran, Frank Seide, Volker Steinbiss, Proceedings ICSLP 96, 4th Int'l Conference on Spoken Language Processing (Cat. No. 96TH8206) , Philidelphia, Pa, BD 4, Oct. 3-6, 1996, pp. 2127-2130, IEEE New York, NY 1996.

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