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Glottal-opening and airflow pattern during production of voiceless fricatives: a new non-invasive instrumentation.
MedLine Citation:
PMID:  18531973     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
In the production of voiceless fricatives, the airflow passing through the vocal tract is controlled by reciprocal open-close patterns of the glottal and oral constriction. In order to observe such coordinated patterns, the authors have developed a combined method using a non-invasive (external-lighting and sensing) photoglottographic (ePGG) technique and a pressure-difference airflow mask. The former technique has the advantage of no restriction of phonetic environments (improvement from the standard PGG) and can be further combined with instrumentation of intraoral air pressure andor of articulatory movements. Our PGG-airflow data are examined to address a question: It has been known that the glottis opens always wider for word-initial fricatives than for word-medial ones despite no obvious difference in acoustic and physiological requirements. It will be discussed whether the degrees of glottal opening during a fricative co-vary with other aerodynamic and articulatory controls in CVCV utterances with V = nonclose vowels.
Authors:
Kiyoshi Honda; Shinji Maeda
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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:  3738     Citation Subset:  IM    
Affiliation:
Phonetics & Phonology Laboratories, UMR-7018-CNRS & University of Paris III, 19, rue des Bernardins, 75005 Paris, France, honda@atr.jp.
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