Journal article
Voice training and therapy with a semi-occluded vocal tract: rationale and scientific underpinnings
Journal of speech, language, and hearing research, Vol.49(2), pp.448-459
04/2006
DOI: 10.1044/1092-4388(2006/035)
PMID: 16671856
Abstract
Voice therapy with a semi-occluded vocal tract has a long history. The use of lip trills, tongue trills, bilabial fricatives, humming, and phonation into tubes or straws has been hailed by clinicians, singing teachers, and voice coaches as efficacious for training and rehabilitation. Little has been done, however, to provide the scientific underpinnings. The purpose of the study was to investigate the underlying physical principles behind the training and therapy approaches that use semi-occluded vocal tract shapes.
Computer simulation, with a self-oscillating vocal fold model and a 44 section vocal tract, was used to elucidate source-filter interactions for lip and epilarynx tube semi-occlusions.
A semi-occlusion in the front of the vocal tract (at the lips) heightens source-tract interaction by raising the mean supraglottal and intraglottal pressures. Impedance matching by vocal fold adduction and epilarynx tube narrowing can then make the voice more efficient and more economic (in terms of tissue collision).
The efficacious effects of a lip semi-occlusion can also be realized for nonoccluded vocal tracts by a combination of vocal fold adduction and epilarynx tube adjustments. It is reasoned that therapy approaches are designed to match the glottal impedance to the input impedance of the vocal tract.
Details
- Title: Subtitle
- Voice training and therapy with a semi-occluded vocal tract: rationale and scientific underpinnings
- Creators
- Ingo R Titze - Denver Center for the Performing Arts
- Resource Type
- Journal article
- Publication Details
- Journal of speech, language, and hearing research, Vol.49(2), pp.448-459
- DOI
- 10.1044/1092-4388(2006/035)
- PMID
- 16671856
- ISSN
- 1092-4388
- eISSN
- 1558-9102
- Grant note
- R01 DC04224-05 / NIDCD NIH HHS R01 DC004224 / NIDCD NIH HHS R01 DC004224-06A1 / NIDCD NIH HHS R01 DC004224-07 / NIDCD NIH HHS
- Language
- English
- Date published
- 04/2006
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984719747602771
Metrics
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