Wigner Ville Transform is introduced as a suitable tool for the analysis of the speech signal, as it allows making a correct representation of the signal energy. First, we give a mathematical formulation of the Wigner Ville Transform of a stationary model of voiced speech. The speech model is expressed as a linear combination of the harmonic frequencies of fundamental frequency of the voiced sp...

Jean-François Cordeau • Goran Stojković • François Soumis • Jacques Desrosiers École des Hautes Études Commerciales and GERAD, 3000, chemin de la Côte-Sainte-Catherine, Montréal, Canada H3T 2A7 École Polytechnique and GERAD, C.P. 6079, Succ. Centre-Ville, Montréal, Canada H3C 3A7 École Polytechnique and GERAD, C.P. 6079, Succ. Centre-Ville, Montréal, Canada H3C 3A7 École des Hautes Études Comme...

This paper introduces a novel method of speech epoch extraction using a modified Wigner-Ville distribution. The Wigner-Ville distribution is an efficient speech representation tool with which minute speech variations can be tracked precisely. In this paper, epoch detection/extraction using accurate energy tracking, noise robustness, and the efficient speech representation properties of a modifi...

A new approach has been proposed for improving the performance of the Wigner–Ville distribution. This approach is based on signal decomposition and modified magnitude group delay function. Signal decomposition achieved by perfect reconstruction filter bank reduces significantly the existence of crossterms. The Gibbs ripple effect is due to truncation of the Wigner–Ville distribution kernel. The...

THOMAS R. SHULTZ∗,†,¶, FRANÇOIS RIVEST‡,‖, LÁSZLÓ EGRI†,∗∗, JEAN-PHILIPPE THIVIERGE§,†† and FRÉDÉRIC DANDURAND∗,‡‡ ∗Department of Psychology, McGill University, 1205 Penfield Avenue, Montreal, QC H3A 1B1, Canada †School of Computer Science, McGill University, 3480 University Street, Montreal, QC H3A 2B4, Canada ‡Département d’Informatique et de Recherche Opérationnelle,Université de Montréal, C...