Comparison of Speech Features on the Speech Recognition Task
Iosif Mporas, Todor Ganchev, Mihalis Siafarikas and Nikos Fakotakis
DOI : 10.3844/jcssp.2007.608.616
Journal of Computer Science
Volume 3, Issue 8
In the present work we overview some recently proposed discrete Fourier transform (DFT)- and discrete wavelet packet transform (DWPT)-based speech parameterization methods and evaluate their performance on the speech recognition task. Specifically, in order to assess the practical value of these less studied speech parameterization methods, we evaluate them in a common experimental setup and compare their performance against traditional techniques, such as the Mel-frequency cepstral coefficients (MFCC) and perceptual linear predictive (PLP) cepstral coefficients which presently dominate the speech recognition field. In particular, utilizing the well established TIMIT speech corpus and employing the Sphinx-III speech recognizer, we present comparative results of 8 different speech parameterization techniques.
© 2007 Iosif Mporas, Todor Ganchev, Mihalis Siafarikas and Nikos Fakotakis. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.