Abstract
The effect of shear thinning in vocal fold tissues—or why we can phonate over two octaves in pitch
The Journal of the Acoustical Society of America, Vol.103(5_Supplement), pp.3057-3057
05/01/1998
DOI: 10.1121/1.422675
Abstract
The shear modulus and viscosity of vocal fold tissues was measured with a rheometer in the frequency range of 1–30 Hz. Extrapolation to phonation frequencies was possible. As in most biological tissues (and for polymers in general), the shear modulus was found to be roughly constant and the viscosity varied inversely with frequency. This makes the damping ratio only a weak function of frequency in phonation. Since self-oscillation of the vocal folds is critically dependent on this damping ratio, it is reasoned that large F0 ranges (on the order of two octaves) are possible only because of this decrease in viscosity, an effect known as shear thinning. A molecular interpretation is given for this effect. [Work supported by NIDCD, Grant No. P60 DC00976.]
Details
- Title: Subtitle
- The effect of shear thinning in vocal fold tissues—or why we can phonate over two octaves in pitch
- Creators
- Ingo Titze - University of IowaRoger Chan - University of Iowa
- Resource Type
- Abstract
- Publication Details
- The Journal of the Acoustical Society of America, Vol.103(5_Supplement), pp.3057-3057
- DOI
- 10.1121/1.422675
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Language
- English
- Date published
- 05/01/1998
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984719560902771
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