Vocal tract changes caused by phonation into a tube: A case study using computer tomography and finite-element modeling

0353296 - ÚT 2011 RIV US eng J - Článek v odborném periodiku
Vampola, T. - Laukkanen, A. M. - Horáček, Jaromír - Švec, J. G.
Vocal tract changes caused by phonation into a tube: A case study using computer tomography and finite-element modeling.
Journal of the Acoustical Society of America. Roč. 129, č. 1 (2011), s. 310-315. ISSN 0001-4966. E-ISSN 1520-8524
Grant CEP: GA ČR GA101/08/1155
Výzkumný záměr: CEZ:AV0Z20760514
Klíčová slova: voice production * computer tomography * vocal tract
Kód oboru RIV: BI - Akustika a kmity
Impakt faktor: 1.550, rok: 2011

Phonation into a glass tube is a voice training and therapy method that leads to beneficial effect in voice production. This pilot study examined the vocal tract shape in a female subject before, during, and after phonation into a tube using computer tomography (CT). 3D finite-element models (FEMs) of the vocal tract were derived from CT images and used to study pharyngeal closure and enlarged cross-sectional areas of the oropharyngeal and oral cavities during and after the tube-phonation. FEM calculations revealed an increased input inertance of the vocal tract and an increased acoustic energy radiated out of the vocal tract after the tube-phonation. The results indicate that the phonation into a tube causes changes in the vocal tract which remain also when the tube is removed.
Trvalý link: http://hdl.handle.net/11104/0192580