Asian Journal of Information Technology
ISSN: Online 1993-5994ISSN: Print 1682-3915
Abstract
In this study propose a new approach in using Hidden Markov Models (HMMs) for speech recognition. Although HMMs are the state-of-the art speech recognition systems, they suffer from some inherent limitations. One of these limitations is the independence assumption in the HMMs formalism. In the approach described in this study, we use in the vector quantization process, grouped vectors of different length to explicitly model the natural correlation between adjacent frames, instead of using a single vector in the standard method. The system is tested on an Arabic isolated digits (0-9) recognition task, our method achieves a 21% reduction in word error rate evaluation compared with the standard approach.
How to cite this article:
Rafik Djemili , Mouldi Bedda and Hocine Bourouba . A Segment Based Approach of Hidden Markov Models for Speech Recognition.
DOI: https://doi.org/10.36478/ajit.2006.1172.1176
URL: https://www.makhillpublications.co/view-article/1682-3915/ajit.2006.1172.1176