Abstract
Measurements of mucosal wave propagation and vertical phase difference in vocal fold vibration
The Journal of the Acoustical Society of America, Vol.91(4_Supplement), pp.2420-2420
04/01/1992
DOI: 10.1121/1.403191
Abstract
Examination of surface wave properties in the vocal fold mucosa is becoming an important part of assessment of vocal function. A key wave property is propagation velocity, which determines the phase delay between upper and lower margins of the vocal folds. Excised canine larynges were used in this study to measure this phase delay, and therewith propagation velocity. The motion of two fleshpoints was tracked stroboscopically. Differential displacements between the fleshpoints were matched to displacements of a model. A least-squared fit of the data to the model provided the numerical values of propagation velocity, which varied from 0.5 m/s to about 2.0 m/s, depending on fundamental frequency. The corresponding phase delay along the medial surface of the vocal folds varied from about 60°/mm to 30°/mm. [Work supported by NIDCD, Grant No. P60-DC0976.]
Details
- Title: Subtitle
- Measurements of mucosal wave propagation and vertical phase difference in vocal fold vibration
- Creators
- Ingo R. Titze - University of IowaJack J. Jiang - Northwestern UniversityTzu-Yu Hsiao
- Resource Type
- Abstract
- Publication Details
- The Journal of the Acoustical Society of America, Vol.91(4_Supplement), pp.2420-2420
- DOI
- 10.1121/1.403191
- ISSN
- 0001-4966
- Number of pages
- 1
- Language
- English
- Date published
- 04/01/1992
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984719739102771
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