Journal article
Vocal fold contact patterns based on normal modes of vibration
Journal of biomechanics, Vol.73, pp.177-184
05/17/2018
DOI: 10.1016/j.jbiomech.2018.04.011
PMCID: PMC5935250
PMID: 29680310
Abstract
The fluid-structure interaction and energy transfer from respiratory airflow to self-sustained vocal fold oscillation continues to be a topic of interest in vocal fold research. Vocal fold vibration is driven by pressures on the vocal fold surface, which are determined by the shape of the glottis and the contact between vocal folds. Characterization of three-dimensional glottal shapes and contact patterns can lead to increased understanding of normal and abnormal physiology of the voice, as well as to development of improved vocal fold models, but a large inventory of shapes has not been directly studied previously. This study aimed to take an initial step toward characterizing vocal fold contact patterns systematically. Vocal fold motion and contact was modeled based on normal mode vibration, as it has been shown that vocal fold vibration can be almost entirely described by only the few lowest order vibrational modes. Symmetric and asymmetric combinations of the four lowest normal modes of vibration were superimposed on left and right vocal fold medial surfaces, for each of three prephonatory glottal configurations, according to a surface wave approach. Contact patterns were generated from the interaction of modal shapes at 16 normalized phases during the vibratory cycle. Eight major contact patterns were identified and characterized by the shape of the flow channel, with the following descriptors assigned: convergent, divergent, convergent-divergent, uniform, split, merged, island, and multichannel. Each of the contact patterns and its variation are described, and future work and applications are discussed. (C) 2018 Elsevier Ltd. All rights reserved.
Details
- Title: Subtitle
- Vocal fold contact patterns based on normal modes of vibration
- Creators
- Simeon L. Smith - University of UtahIngo R. Titze - University of Utah
- Resource Type
- Journal article
- Publication Details
- Journal of biomechanics, Vol.73, pp.177-184
- DOI
- 10.1016/j.jbiomech.2018.04.011
- PMID
- 29680310
- PMCID
- PMC5935250
- NLM abbreviation
- J Biomech
- ISSN
- 0021-9290
- eISSN
- 1873-2380
- Publisher
- Elsevier
- Number of pages
- 8
- Grant note
- R01DC014538 / NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute on Deafness & Other Communication Disorders (NIDCD) R01-DC014538 / National Institutes of Health/National Institute on Deafness and Other Communication Disorders; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute on Deafness & Other Communication Disorders (NIDCD)
- Language
- English
- Date published
- 05/17/2018
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984719744902771
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