The framework of the presentation is the assessment of the ability of human raters or speechprocessing software to detect glottal cycles in speech sounds and measure their lengths in synthetic breathy and rough voices. The synthesis of hoarse voices designates the generation of speech sounds the timbre of which simulates the voice quality of dysphonic speakers. The added value of synthetically ...

Occurrences of period-doubling are found in human phonation, in particular for pathological and some singing phonations such as Sardinian A Tenore Bassu vocal performance. The combined vibration of the vocal folds and the ventricular folds has been observed during the production of such low pitch bass-type sound. The present study aims to characterize the physiological correlates of this acoust...

Voice source analysis is an important but difficult issue for speech processing. In this talk, three aspects of voice source analysis recently developed at LIMSI (Orsay, France) and FPMs (Mons, Belgium) are discussed. In a first part, time domain and spectral domain modelling of glottal flow signals are presented. It is shown that the glottal flow can be modelled as an anticausal filter (maximu...

The effectiveness of glottal source analysis is known to be dependent on the phonetic properties of its concomitant supraglottal features. Phonetic classes like nasals and fricatives are particularly problematic. Their acoustic characteristics, including zeros in the vocal tract spectrum and aperiodic noise, can have a negative effect on glottal inverse filtering, a necessary pre-requisite to g...

The motion of a vocal fold is modelled with two mechanical resonators. One is for the translational movement of the body of the fold and is driven by the spatial average pressure in the glottal constriction. The other is rotational, it models the covering mucosa and is driven by the axial pressure gradient. Unlike the classical Ishizaka-Flanagan two-mass model, these resonators are mechanically...

This paper examines glottal movement data in rate-controlled repetitions of CV (onset consonant + vowel) and VC (vowel + coda consonant) structures. It replicates Tuller & Kelso’s (1991) observation of rate-induced phase transitions in glottal behavior. Specifically, for voiceless consonants peak glottal opening for CV’s are similar at fast and slow rates. The timing for VC’s at slow rates diff...