Julien Cisonni

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In physical modeling of phonation, the pressure drop along the glottal constriction is classically assessed with the glottal geometry and the subglottal pressure as known input parameters. Application of physical modeling to study phonation abnormalities and pathologies requires input parameters related to in vivo measurable quantities commonly(More)
Physical modelling of phonation requires a mechanical description of the vocal fold coupled to a description of the flow within the glottis. In this study, an in-vitro set-up, allowing to reproduce flow conditions comparable to those of human glottal flow is used to systematically verify and discuss the relevance of the pressure and flow-rate predictions of(More)
This paper analyzes the capability of a mucosal wave model of the vocal fold to predict values of phonation threshold lung pressure. Equations derived from the model are fitted to pressure data collected from a mechanical replica of the vocal folds. The results show that a recent extension of the model to include an arbitrary delay of the mucosal wave in(More)
Repetitive brief episodes of soft-tissue collapse within the upper airway during sleep characterize obstructive sleep apnea (OSA), an extremely common and disabling disorder. Failure to maintain the patency of the upper airway is caused by the combination of sleep-related loss of compensatory dilator muscle activity and aerodynamic forces promoting closure.(More)
The pressure drop along the glottal constriction drives vocal folds self-sustained oscillations during phonation. Physical modeling of phonation is classically assessed with the glottal geometry and the subglottal pressure as known input parameters. Several studies including in-vitro validation show that simplified one-dimensional flow models allow(More)
The ventricular bands are laryngeal structures located above and close to the glottis. Several hypotheses considering an aerodynamic interaction between the vocal folds and the ventricular bands during sound production can be found in the literature. The present work aims at studying and modelling such a possible interaction. In particular the influence on(More)