Počet záznamů: 1  

Comparison of computed and measured pressure and acoustic characteristics for normal and extreme phonation

  1. 1.
    0383349 - ÚT 2013 RIV CZ eng A - Abstrakt
    Radolf, Vojtěch - Horáček, Jaromír - Veselý, Jan
    Comparison of computed and measured pressure and acoustic characteristics for normal and extreme phonation.
    Computational mechanics 2012. Plzeň: University of West Bohemia, 2012 - (Adámek, V.; Zajíček, M.; Jonášová, A.). s. 1-2. ISBN 978-80-261-0157-4.
    [Computational mechanics 2012 /28./. 12.11.2012-14.11.2012, Špičák]
    Grant CEP: GA ČR GPP101/12/P579
    Výzkumný záměr: CEZ:AV0Z20760514
    Klíčová slova: biomechanics of voice * phonation into tubes * formant frequency
    Kód oboru RIV: BI - Akustika a kmity

    The purpose of the paper was to compare our current mathematical models to the results of experimental measurements. These measurements were done to obtain real physiological data for extreme ways of human phonation when the acoustic impedance of vocal tract (VT) was increased by prolonging VT with different tubes or straws. These ways of phonations are used for applications in voice training and therapy purposes. One of the main questions was about the lowest formant frequency of an acoustic system consisted of VT prolonged at the lips by a tube. For that reason a new test set was prepared, that enabled to measure transfer function of the system VT+tube without an influence of vibrating vocal folds. The measured formant frequencies F1-F7 excellently agreed with the computed formants. The first formant frequency about 80 Hz was much lower than F1 resulting from the yielding wall models.
    Trvalý link: http://hdl.handle.net/11104/0217580

     
     
Počet záznamů: 1  

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