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Coherent structures in the flow inside a model of the human vocal tract with self-oscillating vocal folds
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SYSNO ASEP 0354856 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Coherent structures in the flow inside a model of the human vocal tract with self-oscillating vocal folds Author(s) Horáček, Jaromír (UT-L) RID, ORCID
Šidlof, Petr (UT-L) RID
Uruba, Václav (UT-L) RID, ORCID
Veselý, Jan (UT-L)
Radolf, Vojtěch (UT-L) RID, ORCID
Bula, Vítězslav (UT-L) RIDSource Title Acta Technica CSAV. - : Ústav termomechaniky AV ČR, v. v. i. - ISSN 0001-7043
Roč. 55, č. 4 (2010), s. 327-343Number of pages 16 s. Language eng - English Country CZ - Czech Republic Keywords biomechanics of voice ; voice production modeling ; PIV method ; coherent structures Subject RIV BI - Acoustics R&D Projects GA101/08/1155 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation The measurement of the airflow in a specially developed 1:1 scaled complex physical model of the voice production is described. This model consists of simplified models of the trachea, the self-oscillating vocal tract with acoustical spaces that correspond to the vowel [a:]. The measurement set-up enabled to use the Particle Image Velocimetry (PIV) method for description of the airflow-pattern and synchronous vocal fold vibration visualization, acoustic and pressure measurements. The results are presented for the subglottal pressure and airflow rates in the range of normal human phonation. Especially, Coanda effect of the glottal jet and coherent structures showing large eddies in the glottal region of the vocal tract are studied. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2011
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