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Modeling, estimating, and compensating low-bit rate coding distortion in speech recognition

Identificadores del recurso

http://hdl.handle.net/10533/197802

doi: 10.1109/TSA.2005.852994

wos: WOS:000235369100024

issn: 1063-6676

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Ficha

Título:: Modeling, estimating, and compensating low-bit rate coding distortion in speech recognition
Descripción:: A solution to the problem of speech recognition with signals distorted by low-bit rate coders is presented in this paper. A model for the coding-decoding distortion, a HMM compensation method to include this model, and an EM-based adaptation algorithm to estimate this distortion are proposed here. Medium vocabulary continuous-speech speaker-independent recognition experiments with 8 kbps G.729(CS-CELP), 13 kbps RPE-LTP (GSM), 5.3 kbps G723.1, 4.8 kbps FS-1016 and 32 kbps G.726(ADPCM) coders show that the approach described in this paper is able to dramatically reduce the effect of the coding distortion and, in some cases, gives a word accuracy higher than the baseline system with uncoded speech. Finally, the EM estimation algorithm requires only one adapting utterance and the approach described is certainly suitable for dialogue systems where just a few adapting utterances are available.
Fuente:: IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING; reponame:Artículos CONICYT; instname:CONICYT Chile; instacron:CONICYT
Idioma:: English
Relación:: instname: Conicyt; reponame: Repositorio Digital RI2.0; info:eu-repo/grantAgreement/Fondef/D02I1089; info:eu-repo/semantics/dataset/hdl.handle.net/10533/93477
Autor/Productor:: Becerra-Yoma, Nestor; Silva-Sánchez, Jorge; Busso-Vyhmeister, Carlos
Derechos:: info:eu-repo/semantics/openAccess
Fecha:: 2006
Tipo de recurso:: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion
About:: 2020-01-27T14:04:19Zhttp://www.openarchives.org/OAI/2.0/oai_dc/Artículos CONICYT - CONICYT Chile

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