Document Detail


Computer simulations of intraoral pressure patterns during voiced stop consonant production.
MedLine Citation:
PMID:  18529613     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Several past studies have used laryngeal andor upper vocal tract models to explore aerodynamic control during production of obstruent consonants, yet many aspects of such control remain unclear. Of particular interest in this work is how varying laryngeal and vocal tract dimensions such as occur among men, women, and children influence phonatory behavior and the time course of intraoral pressure (Pio) increase during voiced stop consonant production. To maintain phonation during a voiced stop closure, Pio must remain below the subglottal pressure. Physiological and modeling studies indicate that adult speakers actively increase supraglottal volumes during voiced stops, which slows the rate of Pio increase. Speakers with smaller vocal tracts may either be less successful in slowing the rate of Pio buildup, or else may perform more extreme volumetric changes to achieve similar end results. The current study uses data recently collected on voicing and Pio during stop production in men, women, and children. We use a modified two-mass model of the vocal folds coupled to a model of the upper vocal tract to reproduce the observed Pio patterns, and explore how the behavior of the system reflects differences in anatomical and physiological dimensions. [Work supported by MCTCNPq-Brazil.].
Authors:
Jorge C Lucero; Laura L Koenig
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  123     ISSN:  1520-8524     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2008 May 
Date Detail:
Created Date:  2008-06-05     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3074     Citation Subset:  IM    
Affiliation:
Univ. Brasilia, Dept. Mathematics, 70910-900 Brasilia - DF, Brazil, lucero@unb.br.
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