Journal article
Regulating glottal airflow in phonation: application of the maximum power transfer theorem to a low dimensional phonation model
The Journal of the Acoustical Society of America, Vol.111(1 Pt 1), pp.367-376
01/2002
DOI: 10.1121/1.1417526
PMID: 11831809
Abstract
Two competing views of regulating glottal airflow for maximum vocal output are investigated theoretically. The maximum power transfer theorem is used as a guide. A wide epilarynx tube (laryngeal vestibule) matches well with low glottal resistance (believed to correspond to the "yawn-sigh" approach in voice therapy), whereas a narrow epilarynx tube matches well with a higher glottal resistance (believed to correspond to the "twang-belt" approach). A simulation model is used to calculate mean flows, peak flows, and oral radiated pressure for an impedance ratio between the vocal tract (the load) and the glottis (the source). Results show that when the impedance ratio approaches 1.0, maximum power is transferred and radiated from the mouth. A full update of the equations used for simulating driving pressures, glottal flow, and vocal tract input pressures is provided as a programming guide for those interested in model development.
Details
- Title: Subtitle
- Regulating glottal airflow in phonation: application of the maximum power transfer theorem to a low dimensional phonation model
- Creators
- Ingo R Titze - University of Iowa
- Resource Type
- Journal article
- Publication Details
- The Journal of the Acoustical Society of America, Vol.111(1 Pt 1), pp.367-376
- DOI
- 10.1121/1.1417526
- PMID
- 11831809
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Grant note
- R01 DC02532-05 / NIDCD NIH HHS
- Language
- English
- Date published
- 01/2002
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984719747802771
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