Impact stress in a self-oscillating model of human vocal folds

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F16%3A00460359" target="_blank" >RIV/61388998:_____/16:00460359 - isvavai.cz</a>
Result on the web
<a href="http://www.tvi-in.com/Journals/journaldetail.aspx?Id=2016062811045074383592dcc719793" target="_blank" >http://www.tvi-in.com/Journals/journaldetail.aspx?Id=2016062811045074383592dcc719793</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Impact stress in a self-oscillating model of human vocal folds
Original language description
The present contribution discusses a measurement of impact stress in a replica of the vocal folds made of silicon rubber excited by airflow with synchronous registration of the flow-induced vocal fold vibrations using a high speed camera, measurement of the subglottal dynamic and mean air pressures and the radiated acoustic pressure. Special miniature contact sensor was used to measure the impact stress between oscillating vocal folds during collisions. The airflow coming to the 1:1 scaled model of trachea was increasing from the phonation threshold up to the airflow rate of 0,6 l/s and subglottal pressure of 2,3 kPa, which is in the range of physiologically relevant values in a normal human voice production. Depending on the flow rate the maximum contact stress, also referred to as the maximum impact stress, was measured from about 1,7 to 2,75 kPa and the vibration amplitude of the glottis, also referred to us the maximum glottal opening, was between 2 and 3,7 mm. The fundamental frequency of self-oscillations of the vocal folds was about 152 Hz. The measured impact stress corresponds to values of 0,4-3,2 kPa, which are found in human excised larynges, as well as to the values numerically simulated by the aeroelastic model of the self-sustained vocal fold oscillations with collisions.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BI - Acoustics and oscillation
OECD FORD branch
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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
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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