Sixth European Conference on Speech Communication and Technology
(EUROSPEECH'99)

Budapest, Hungary
September 5-9, 1999

Phoneme Recognition System Based on HMM with Distributed VQ Codebook

Mohamed Debyeche (1), Mohamed Afify (2), Jean-Paul Haton (2)

(1) Institut d’Electronique, Laboratoire Traitement du Signal, EL-Alia, Alger, Algérie
(2) CRIN / CNRS / INRIA Lorraine, Vandoeuvre-lès-Nancy, France

In this paper a new variant of HMM named distributed VQ HMM (DVQHMM) is presented. Its main characteristic is the use of a code books distributed on HMM states with a new manner of HMM parameters estimation. Procedures for training and HMM evaluation of each recognition unit are described. Comparative results on an isolated phoneme recognition system are shown, between DVQHMM and conventional VQ HMM. The use of the proposed method improves the performance of the system.


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Bibliographic reference.  Debyeche, Mohamed / Afify, Mohamed / Haton, Jean-Paul (1999): "Phoneme recognition system based on HMM with distributed VQ codebook", In EUROSPEECH'99, 1315-1318.