Phase Distortion Statistics as a Representation of the Glottal Source: Application to the Classification of Voice QualitiesReportar como inadecuado




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1 ICS-FORTH - Institute of Computer Science Crete 2 Analyse et synthèse sonores Paris STMS - Sciences et Technologies de la Musique et du Son

Abstract : The representation of the glottal source is of paramount importance for describing para-linguistic information carried through the voice quality e.g., emotions, mood, attitude. However, some existing representations of the glottal source are based on analytical glottal models, which assume strong a priori constraints on the shape of the glottal pulses. Thus, these representations are restricted to limited number of voices. Recent progresses in the estimation of the glottal models revealed that the Phase Distortion PD of the signal carries most of the information about the glottal pulses. This paper introduces a flexible representation of the glottal source - based on the short-term modelling of the phase distortion. This representation is not constrained by a specific analytical model, and thus can be used to describe a larger variety of expressive voices. We address the efficiency of this representation for the recognition of various voice qualities, with comparison to MFCC and standard glottal source representations.

Keywords : phase distortion voice quality glottal source





Autor: Gilles Degottex - Nicolas Obin -

Fuente: https://hal.archives-ouvertes.fr/



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