Experimental investigation of vibration, pressure and acoustic characteristics of normal and soft phonations on a physical model

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F13%3A00395103" target="_blank" >RIV/61388998:_____/13:00395103 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Experimental investigation of vibration, pressure and acoustic characteristics of normal and soft phonations on a physical model
Original language description
The contribution compares measurements of phonations: on vowel [u:], into a resonance tube and into a narrow straw for a ?normal and ?soft phonation at the phonation onset. The acoustic impedance of vocal tract was increased by phonation through the tubeinto water loading the phonatory model by the hydrodynamic pressure and bubbling. The measurements were carried out with silicon vocal folds replica joint to the trachea and vocal tract models for vowel [u:] prolonged by a glass tube or by a plastic straw. The results show that phonation onset is given by the airflow rate, which was found constant Q=0.12 l/s for tube, tube in water and straw even if the Psub, Poral and Ptrans varied considerably. It confirms the conclusions of previous studies: a principle controlling mechanism for phonation onset is given by a critical mass flow rate when the vocal folds start to vibrate due to the loss of aeroelastic stability. Only for vowel [u:], the higher F0 than in all other cases resulted accor
Czech name
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Czech description
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Project
<a href="/en/project/GAP101%2F12%2F1306" target="_blank" >GAP101/12/1306: Biomechanical modeling of human voice production - way to artificial vocal folds</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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