Document Detail

Laryngeal and aerodynamic adjustments for voicing versus devoicing of /h/: a within-speaker study.
MedLine Citation:
PMID:  18207361     Owner:  NLM     Status:  MEDLINE    
The aim of this within-speaker case study was to explore how effectively a phonetically trained speaker could alter the likelihood of voicing around abduction, and what changes he made to do so. An American English-speaking male produced intervocalic /h/ in varying loudness and vowel contexts. When given no specific instructions about voicing (block 1), he produced almost entirely voiced /h/. He was then asked to devoice /h/ (block 2). Measures of voicing, baseline airflow, pulse amplitudes, fundamental frequency (F0), open quotient, and speed quotient were made from oral airflow signals. Subglottal pressure was estimated from intraoral pressures during /p/. In block 2, the speaker produced 70% devoiced /h/. He achieved this by making several changes associated with higher phonation threshold pressures: greater abduction degrees, lower subglottal pressures, greater longitudinal tension of the vocal folds, and altered laryngeal settings. Qualitative inspection of the DC flow contours along with correlational and principal components analyses indicated widespread changes in respiratory, laryngeal, and supralaryngeal settings, and differing interrelationships among variables. Our speaker showed tacit knowledge of the range of parameters affecting voicing. Differing relationships among variables across the two blocks support a view of phonation as a dynamic process, where speakers adjust multiple parameters, simultaneously.
Laura L Koenig; Jorge C Lucero; W Einar Mencl
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2008-01-22
Journal Detail:
Title:  Journal of voice : official journal of the Voice Foundation     Volume:  22     ISSN:  1873-4588     ISO Abbreviation:  J Voice     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-11-14     Completed Date:  2009-02-03     Revised Date:  2014-09-04    
Medline Journal Info:
Nlm Unique ID:  8712262     Medline TA:  J Voice     Country:  United States    
Other Details:
Languages:  eng     Pagination:  709-20     Citation Subset:  IM    
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MeSH Terms
Larynx / physiology*
Phonation / physiology*
Speech / physiology*
Voice / physiology*
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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