Second European Conference on Speech Communication and Technology

Genova, Italy
September 24-26, 1991


Optimizing Lexical Fast Search in a Large Vocabulary Isolated Word Speech Recognition System

H. Drexler, R. Roddeman, Louis Boves, Helmer Strik

Nijmegen University, Dept. of Language and Speech, Phonetics Section, Nijmegen, The Netherlands

This paper describes methods developed to improve the performance of a preselection algorithm in a large vocabulary isolated word recognizer. 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 where possible are 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

Full Paper

Bibliographic reference.  Drexler, H. / Roddeman, R. / Boves, Louis / Strik, Helmer (1991): "Optimizing lexical fast search in a large vocabulary isolated word speech recognition system", In EUROSPEECH-1991, 1401-1404.