Document Detail

The minimum lung pressure to sustain vocal fold oscillation.
MedLine Citation:
PMID:  7642816     Owner:  NLM     Status:  MEDLINE    
In previous experimental studies it has been observed that the minimum lung pressure to sustain vocal fold oscillation after its onset is lower than the threshold pressure needed to initiate it. This phenomenon is studied analytically using a previous body-cover model of the vocal folds and applying the describing function method to the general case of large amplitude oscillations. It is shown that the phenomenon is a consequence of the nonlinear characteristic of the effective aerodynamic damping introduced by the air pressure acting on the vocal folds. The results predict a value for minimum sustaining pressure equal to half the threshold pressure for a rectangular prephonatory glottis, which is in the order of experimental results.
J C Lucero
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  98     ISSN:  0001-4966     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  1995 Aug 
Date Detail:
Created Date:  1995-09-21     Completed Date:  1995-09-21     Revised Date:  2006-12-27    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  779-84     Citation Subset:  IM    
Department of Mathematics, University of Brasília.
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MeSH Terms
Models, Theoretical
Speech / physiology*
Vocal Cords / physiology*

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