A comparative performance measure of some timefrequency distributions for Arabic plosive-vowel transition using Renyi criterion

Abstract

The paper presents a quantitative comparative study of some time-frequency distributions i.e (TFDs). The comparison based on the Renyi criterion is achieved on synthetic as well real-life data. In particular, our application is made on the real consonant-vowel transition that represents a very good example for nonstationary case and speech application. We show that a recently proposed TFD give a high time–frequency resolution with suppressing the undesirable cross-terms in the multicomponent signal. 1. INTRODUCTION In this paper, we present a quantitative comparative study between some existing time-frequency distributions (TFDs) in the analysis of multi-component signals. In the comparison, we consider the cross-terms suppression and the high-energy concentration of the signal around its instantaneous frequency (IF).The widely used spectrogram (SP), which is in general a cross-terms free TFD, suffers from the undesirable tradeoff between time resolution and frequency resolution [1],