Document Detail


Development of aerodynamic aspects in children's voice.
MedLine Citation:
PMID:  7782176     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To determine the changes with increasing age in children this study measured the air flow and the acoustic signal in children aged 4-15 years. The subglottal pressure was estimated from the intraoral pressure during the phonation of the word 'ipipi'. From these parameters the glottal resistance and the glottal efficiency were calculated. Since these parameters depend on the sound pressure level, a linear regression of the parameters versus the sound pressure level was done, and the values for 75 dB SPL were taken for statistical analysis. The study found a subglottal pressure in younger children between 6 and 10 cm water column, which seemed to diminish with age. The phonatory flow rate was between 50 and 150 ml/s in younger children, which seemed to increase with age. The glottal resistance did not depend on age, values of 20-250 Ns/m5 at a sound pressure level of 75 dB exceed those for adults given in the literature. The measurements for the glottal efficiency showed a broad variability between 20 ppm and 400 ppm.
Authors:
A Keilmann; C A Bader
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  International journal of pediatric otorhinolaryngology     Volume:  31     ISSN:  0165-5876     ISO Abbreviation:  Int. J. Pediatr. Otorhinolaryngol.     Publication Date:  1995 Mar 
Date Detail:
Created Date:  1995-07-20     Completed Date:  1995-07-20     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8003603     Medline TA:  Int J Pediatr Otorhinolaryngol     Country:  IRELAND    
Other Details:
Languages:  eng     Pagination:  183-90     Citation Subset:  IM    
Affiliation:
Arztin für Hals-Nasen-Ohrenheilkunde, Phoniatrie und Pädaudiologie, Universitäts-Hals-Nasen-Ohrenklinik, Mannheim, Germany.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aging / physiology*
Air
Air Pressure
Body Height
Child
Child, Preschool
Efficiency
Female
Glottis / physiology
Humans
Linear Models
Male
Mouth / physiology
Phonation
Speech Acoustics
Voice / physiology*
Voice Quality / physiology

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


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