| Nonlinear vocal fold dynamics resulting from asymmetric fluid loading on a two-mass model of speech. | |
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MedLine Citation:
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PMID: 21974648 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Nonlinear vocal fold dynamics arising from asymmetric flow formations within the glottis are investigated using a two-mass model of speech with asymmetric vocal fold tensioning, representative of unilateral vocal fold paralysis. A refined theoretical boundary-layer flow solver is implemented to compute the intraglottal pressures, providing a more realistic description of the flow than the standard one-dimensional, inviscid Bernoulli flow solution. Vocal fold dynamics are investigated for subglottal pressures of 0.6 < p(s) < 1.5 kPa and tension asymmetries of 0.5 < Q < 0.8. As tension asymmetries become pronounced the asymmetric flow incites nonlinear behavior in the vocal fold dynamics at subglottal pressures that are associated with normal speech, behavior that is not captured with standard Bernoulli flow solvers. Regions of bifurcation, coexistence of solutions, and chaos are identified. |
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Authors:
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Byron D Erath; Matías Zañartu; Sean D Peterson; Michael W Plesniak |
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Publication Detail:
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Type: JOURNAL ARTICLE |
Journal Detail:
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Title: Chaos (Woodbury, N.Y.) Volume: 21 ISSN: 1089-7682 ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-10-6 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100971574 Medline TA: Chaos Country: - |
Other Details:
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Languages: ENG Pagination: 033113 Citation Subset: - |
Affiliation:
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Department of Mechanical and Aerospace Engineering, The George Washington University, Washington DC 20052, USADepartment of Electronic Engineering, Universidad Técnica Federico Santa María, Valparaíso, Chile 2390123Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada. |
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