{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T18:06:25Z","timestamp":1791137185727,"version":"4.1.0"},"reference-count":48,"publisher":"Acoustical Society of America (ASA)","issue":"4","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2006,4,1]]},"abstract":"<jats:p>Analytical and computer simulation studies have shown that the acoustic impedance of the vocal tract as well as the viscoelastic properties of vocal fold tissues are critical for determining the dynamics and the energy transfer mechanism of vocal fold oscillation. In the present study, a linear, small-amplitude oscillation theory was revised by taking into account the propagation of a mucosal wave and the inertive reactance (inertance) of the supraglottal vocal tract as the major energy transfer mechanisms for flow-induced self-oscillation of the vocal fold. Specifically, analytical results predicted that phonation threshold pressure (Pth) increases with the viscous shear properties of the vocal fold, but decreases with vocal tract inertance. This theory was empirically tested using a physical model of the larynx, where biological materials (fat, hyaluronic acid, and fibronectin) were implanted into the vocal fold cover to investigate the effect of vocal fold tissue viscoelasticity on Pth. A uniform-tube supraglottal vocal tract was also introduced to examine the effect of vocal tract inertance on Pth. Results showed that Pth decreased with the inertive impedance of the vocal tract and increased with the viscous shear modulus (G\u2033) or dynamic viscosity (\u03b7\u2032) of the vocal fold cover, consistent with theoretical predictions. These findings supported the potential biomechanical benefits of hyaluronic acid as a surgical bioimplant for repairing voice disorders involving the superficial layer of the lamina propria, such as scarring, sulcus vocalis, atrophy, and Reinke\u2019s edema.<\/jats:p>","DOI":"10.1121\/1.2173516","type":"journal-article","created":{"date-parts":[[2006,3,29]],"date-time":"2006-03-29T15:50:09Z","timestamp":1143647409000},"page":"2351-2362","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":113,"title":["Dependence of phonation threshold pressure on vocal tract acoustics and vocal fold tissue mechanics"],"prefix":"10.1121","volume":"119","author":[{"given":"Roger W.","family":"Chan","sequence":"first","affiliation":[{"name":"University of Texas Southwestern Medical Center Otolaryngology\u2014Head and Neck Surgery; and Biomedical Engineering, , Dallas, Texas 75390-9035"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ingo R.","family":"Titze","sequence":"additional","affiliation":[{"name":"The Denver Center for the Performing Arts National Center for Voice and Speech, , Denver, Colorado 80204"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"231","reference":[{"key":"2023071310163738000_c1","first-page":"89","article-title":"Quantitative and qualitative changes in the fibronectin level in rheumatoid arthritis","volume":"60","year":"1988","journal-title":"Terapevticheskii Arkhiv"},{"key":"2023071310163738000_c2","doi-asserted-by":"publisher","first-page":"97","DOI":"10.1016\/S0892-1997(03)00012-2","article-title":"The false vocal folds: shape and size in frontal view during phonation based on laminagraphic tracings","volume":"17","year":"2003","journal-title":"J. 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