The linear canonical transform is shown to be one of the most powerful tools for nonstationary signal processing. Based on the properties of the linear canonical transform and the classical Wigner-Ville transform, this paper investigates theWigner-Ville distribution in the linear canonical transform domain. Firstly, unlike the classical Wigner-Ville transform, a new definition of WignerVille di...

In this study, we proposed a joint time-frequency distribution of suppressing cross-terms aiming at cross-terms interference of Wigner-Ville distribution. According to the analyzed signal, the Wigner-Ville distribution and Smooth Pseudo Wigner-Ville distribution can be obtained. Moreover, the prototype of timefrequency distribution can be obtained by non-linear filter for Smooth Pseudo Wigner-V...

This paper introduces a new method of voice activity detection (VAD) using modified Wigner-Ville distribution. Modified Wigner-Ville distribution can track the speech regions efficiently in noisy environments. Fourier Transform (FT) and Discrete Cosine Transform (DCT) variants of Wigner-Ville distribution based, voice activity detection schemes are presented. The efficient time frequency spectr...

Vladimir Makarenkov, Dmytro Kevorkov and Pierre Legendre Département d’informatique, Université du Québec à Montréal, C.P. 8888, succ. Centre-Ville, Montréal (Québec) Canada H3C 3P8 (makarenkov.vladimir at uqam.ca); Département d’informatique, Université du Québec à Montréal, C.P. 8888, succ. Centre-Ville, Montréal (Québec) Canada H3C 3P8. (kevorkov at lacim.uqam.ca); Département de Sciences Bi...

Department of Electrical Engineering, École Polytechnique de Montréal, P.O. Box 6079, Station Centre-ville, Montreal (Quebec) Canada, H3C 3A7 CRC Chair on the Optimization of Communication Networks, Department of Computer Science and Operations Research, Université de Montréal, P.O. Box 6128, Station Centre-ville, Montreal (Quebec) Canada, H3C 3J7 Department of Computer Science, Université du Q...

In process of AC square wave submerged arc welding, electric signal waveform determines the arc energy characteristics in the time and frequency domain, which also reflects the arc stability of welding proc ess and quality indirectly. Using Wigner-Ville distribution (WVD), time frequency analysis is conducted to the current signal of AC square wave submerged arc welding. The Pseudo Wigner-Ville...

This article presents a new method facilitating interference reduction in the Wigner-Ville distribution, which is used for nonstationary signal analysis, for example in machine condition monitoring. The algorithm is based on multiple Smoothed Pseudo Wigner-Ville distributions: differently smoothed time-frequency planes are compared and, for every point, a cross-term free value is calculated on ...

In this study a time-frequency method based on Wigner-Ville Distribution (WVD) is used for detection and parameter estimation of Frequency Modulated Continuous Wave (FM-CW) Radar Signal. The proposed method uses the Pseudo-Wigner-Ville Distribution (PWVD) as a time-frequency detection technique and Radon Transform to identify the parameter of the modulation. The Wigner-Ville Radon Transform (WV...

Symmetry preserving discretization of SL(2,R) invariant equations Anne Bourlioux a, Raphaël Rebelo b,c and Pavel Winternitz a,b a Département de mathématiques et de statistique, Université de Montréal, C.P. 6128, succ. Centre-ville, Montréal, Québec H3C 3J7, Canada. E-mail: [email protected] b Centre de recherches mathématiques, Université de Montréal, C.P. 6128, succ. Centre-ville, Mon...

§ [email protected] École de bibliothéconomie et des sciences de l'information, Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC. H3C 3J7 (Canada) and Observatoire des Sciences et des Technologies (OST), Centre Interuniversitaire de Recherche sur la Science et la Technologie (CIRST), Université du Québec à Montréal, CP 8888, Succ. Centre-Ville, Montréal, QC. H3C ...