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Optimizing lexical fast search in a large vocabulary isolated word speech recognition system
H. Drexler, R. Roddeman, L. Boves & H. Strik (1991)
Proceedings EUROSPEECH 91, Genova, Vol. 3, pp. 1401-1404.


This paper describes methods developed to improve the performance of a preselection algorithm in a large vocabulary isolated word recogniser. First we investigate ways for optimizing the phonetic representations of the words in the lexicon (the base forms of which are obtained from a grapheme-to-phoneme converter) in such a way that the inherent limitations of the front-end are taken into account and were possible remedied. Then an attempt is made to improve the quality of the symbol strings produced by the acoustic front-end.

Keywords: isolated-word recognition, preselection, lexicon

Last updated on 22-05-2004