Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/95147
Type: Artigo de periódico
Title: On Including Temporal Constraints In Viterbi Alignment For Speech Recognition In Noise
Author: Yoma N.B.
McInnes F.R.
Jack M.A.
Stump S.D.
Ling L.L.
Abstract: This paper addresses the problem of temporal constraints in the Viterbi algorithm in speaker-dependent and independent tasks. The results here presented suggest that in a speaker-dependent task the introduction of temporal constraints can lead to a high improvement with additive or convolutional noise, the statistical modeling of state durations is not relevant if the max and min state duration restrictions are imposed, and truncated probability densities give better results than a metric previously proposed. Finally, word position dependent and independent temporal restrictions are compared in connected word speech recognition experiments and it is shown that the former leads to better results with the same computational load. However, duration model effect could be much less significant when the acoustic model is optimized and when the training and testing conditions are matched.
Editor: IEEE, Piscataway, NJ, United States
Rights: fechado
Identifier DOI: 10.1109/89.902285
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0035249864&partnerID=40&md5=08e71ee21752fcb79b160b109236c9f8
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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