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Pressures and Flows for a Convergent and Divergent Oblique Glottis of 15 Degrees

Whitfield, Jason A.
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1333486868

Abstract Details

2012, Master of Science (MS), Bowling Green State University, Communication Disorders/Speech-Language Pathology.
Current high-speed imaging of vocal fold motion has shown vibrational asymmetries in both individuals with and without voice disorders. However, empirical data regarding aerodynamic pressure of asymmetric glottal configurations is limited. The current investigation examined empirically derived intraglottal pressures of left-right glottal asymmetry (obliquity) using the static constant flow model, M5. Two cases, one convergent and one divergent, having an obliquity of 15o were examined. Seven diameters along with a range of transglottal pressure were studied for each case. For both cases of obliquity, when the diameter was small, the vocal folds were more aerodynamically entrained, with each vocal fold having similar intraglottal pressures. As the diameter increased, the aerodynamic coupling of the vocal folds decreased, leading to cross channel pressure differences at glottal entrance as large as 70% for the convergent Case I and 40% for the divergent Case II. These aerodynamic differences may potentially enhance out of phase motion of the vocal folds. These data suggest that the aerodynamic effects of obliquity are highly dependent on diameter and angle. Results from this study should be incorporated into multimass computer simulation models to further examine the dynamic effects of obliquity on vocal fold oscillation and glottal flow.
Ronald Scherer, C (Advisor)
John Folkins (Committee Member)
Roger Colcord (Committee Member)
184 p.
Biomechanics; Biophysics; Civil Engineering; Engineering; Speech Therapy
Glottal Asymmetries; Vocal Fold Asymmetries; Vocal Fold Physiology; Glottal Aerodynamics; Vocal Fold Modeling

Recommended Citations

Citations

  • Whitfield, J. A. (2012). Pressures and Flows for a Convergent and Divergent Oblique Glottis of 15 Degrees [Master's thesis, Bowling Green State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1333486868

    APA Style (7th edition)

  • Whitfield, Jason. Pressures and Flows for a Convergent and Divergent Oblique Glottis of 15 Degrees. 2012. Bowling Green State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1333486868.

    MLA Style (8th edition)

  • Whitfield, Jason. "Pressures and Flows for a Convergent and Divergent Oblique Glottis of 15 Degrees." Master's thesis, Bowling Green State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1333486868

    Chicago Manual of Style (17th edition)

bgsu1333486868
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© 2012, some rights reserved.Creative Commons License Pressures and Flows for a Convergent and Divergent Oblique Glottis of 15 Degrees by Jason A. Whitfield is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by Bowling Green State University and OhioLINK.