Abstract
Glottal geometry and phonation threshold pressure in a vocal fold physical model
The Journal of the Acoustical Society of America, Vol.99(4_Supplement), pp.2471-2500
04/01/1996
DOI: 10.1121/1.415538
Abstract
The effect of convergent and divergent prephonatory glottal geometries on phonation threshold pressure was investigated using a previously reported physical model of the vocal fold mucosa [Titze et al., J. Acoust. Soc. Am. 97, 3080–3084 (1995)]. Lowest offset phonation threshold pressure in the range of 0.07 to 0.23 kPa was obtained for a rectangular or a near-rectangular glottis (with convergent or divergent angle ≤3°) across different glottal half-widths between 2.0 and 6.0 mm. Phonation threshold pressure for more convergent or divergent glottal geometries was consistently higher. This finding only partially agrees with previous analytical work which predicts a lowest phonation threshold pressure for a divergent glottis [I. R. Titze, J. Acoust. Soc. Am. 83, 1536–1552 (1988) and J. C. Lucero, J. Acoust. Soc. Am. 98, 779–784 (1995)]. The discrepancy between theory and data is likely to be associated with flow separation from a divergent glottis. [Work supported by NIH.]
Details
- Title: Subtitle
- Glottal geometry and phonation threshold pressure in a vocal fold physical model
- Creators
- Roger W. Chan - University of IowaIngo R. Titze - University of IowaMichael R. Titze - University of Iowa
- Resource Type
- Abstract
- Publication Details
- The Journal of the Acoustical Society of America, Vol.99(4_Supplement), pp.2471-2500
- DOI
- 10.1121/1.415538
- ISSN
- 0001-4966
- Number of pages
- 30
- Language
- English
- Date published
- 04/01/1996
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984719742102771
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