Počet záznamů: 1
Comparison of Acceleration and Impact Stress as Possible Loading Factors in Phonation: A Computer Modeling Study
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SYSNO ASEP 0327204 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Comparison of Acceleration and Impact Stress as Possible Loading Factors in Phonation: A Computer Modeling Study Tvůrce(i) Horáček, Jaromír (UT-L) RID, ORCID
Laukkanen, A. M. (FI)
Šidlof, Petr (UT-L) RID
Murphy, P. (IE)
Švec, J. G. (CZ)Zdroj.dok. Folia Phoniatrica Et Logopaedica - ISSN 1021-7762
Roč. 61, č. 3 (2009), s. 137-145Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova biomechanics of voice modeling ; fundamental frequency ; phoniation type ; gender differences in voice Vědní obor RIV BI - Akustika a kmity CEP GA101/08/1155 GA ČR - Grantová agentura ČR CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000269790000003 DOI 10.1159/000219949 Anotace Impact stress is suspected to be the main traumatizing mechanism in voice production. However, the repetitive acceleration and deceleration may also traumatize the vocal fold tissues. Using an aeroelastic model of voice production, the study quantifies the acceleration and impact stress in relation to lung pressure, fundamental frequency (F0) and prephonatory glottal half-width. Both impact stress and acceleration were found to increase with lung pressure. Compared to impact stress, acceleration was less dependent on prephonatory glottal width and, thus, on voice production type. Maximum acceleration values were about 5-10 times greater for high F0 (approx. 400 Hz) compared to low F0 (approx. 100 Hz), whereas maximum impact stress remained nearly unchanged. Thus, the inertia forces present at high F0 a greater load for the vocal folds, and in addition to the collision forces contribute to the fact that females have vocal fold traumas more frequently than males. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2010
Počet záznamů: 1