Počet záznamů: 1

Coherent structures in the flow inside a model of the human vocal tract with self-oscillating vocal folds

  1. 1.
    0354856 - UT-L 2011 RIV CZ eng J - Článek v odborném periodiku
    Horáček, Jaromír - Šidlof, Petr - Uruba, Václav - Veselý, Jan - Radolf, Vojtěch - Bula, Vítězslav
    Coherent structures in the flow inside a model of the human vocal tract with self-oscillating vocal folds.
    Acta Technica CSAV. Roč. 55, č. 4 (2010), s. 327-343 ISSN 0001-7043
    Grant CEP: GA ČR GA101/08/1155
    Výzkumný záměr: CEZ:AV0Z20760514
    Klíčová slova: biomechanics of voice * voice production modeling * PIV method * coherent structures
    Kód oboru RIV: BI - Akustika a kmity

    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.
    Trvalý link: http://hdl.handle.net/11104/0193765