Control of voice intensity

Karin Sjögren, Emma Ström, Anders Löfqvist

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review


This study examined the control of voice intensity using acoustic and aerodynamic recordings. A total of 34 subjects participated half of them with and half without song training, 21 females and 13 males. The subjects produced the syllable sequence /papapa/ while the acoustic signal, the oral air flow and the oral air pressure were recorded using the Kay-Pentax Phonatory Aerodynamic System. The oral pressure provided an estimate of the subglottal pressure. A measure of glottal flow resistance was calculated as the ratio between subglottal pressure and oral air flow.Three different voice levels were used, normal, reduced, and increased; the change between the normal level and the two others was required to be 6-10 dB. Overall, an increase in voice intensity was associated with increased subglottal pressure and glottal flow resistance with only a small increase in air flow. A comparison between the subjects with and without song training showed those with training to produce higher intensities, to use higher subglottal pressure, but lower glottal flow resistance. Female voices had lower subglottal pressure and lower flow rates but higher glottal resistance than male voices.
Original languageEnglish
Title of host publication166th Meeting of the Acoustical Society of America
PublisherAcoustical Society of America
Publication statusPublished - 2014
Event166th Meeting of the Acoustical Society of America - San Francisco, United States
Duration: 2013 Dec 22013 Dec 6

Publication series

Name Proceedings of Meetings on Acoustics
PublisherAcoustical Society of America
ISSN (Print)1939-800X


Conference166th Meeting of the Acoustical Society of America
Country/TerritoryUnited States
CitySan Francisco

Subject classification (UKÄ)

  • Other Medical Sciences not elsewhere specified


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