title: Laryngeal flow due to longitudinal sweeping motion of the vocal folds and its contribution to auto-oscillation.
abstract: Analysis of published depth-kymography data [George, de Mul, Qiu, Rakhorst, and Schutte (2008). Phys. Med. Biol. 53, 2667-2675] shows that, for the subject studied, the flow due to the longitudinal sweeping motion of the vocal folds contributes several percent of a typical acoustic flow at the larynx. This sweeping flow is a maximum when the glottis is closed. This observation suggests that assumption of zero laryngeal flow during the closed phase as a criterion when determining parameters in inverse filtering should be used with caution. Further, these data suggest that the swinging motion contributes work to overcome mechanical losses and thus to assist auto-oscillation.
authors.affiliation: School of Physics, The University of New South Wales, Sydney, New South Wales 2052, Australia.
authors.forename: Henri
authors.initials: H
authors.lastname: Boutin
authors.affiliation: School of Physics, The University of New South Wales, Sydney, New South Wales 2052, Australia.
authors.forename: John
authors.initials: J
authors.lastname: Smith
authors.affiliation: School of Physics, The University of New South Wales, Sydney, New South Wales 2052, Australia.
authors.forename: Joe
authors.initials: J
authors.lastname: Wolfe
mesh_terms: D000388:Air; D005931:Glottis / Q000502:physiology; D006801:Humans; D007734:Kymography; D007830:Larynx / Q000502:physiology*; D009038:Motion; D010699:Phonation / Q000502:physiology*; D012212:Rheology; D013016:Sound; D013068:Speech Production Measurement; D014732:Vibration; D014827:Vocal Cords / Q000502:physiology