Effects of Lung Volume on the Glottal Voice Source.

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Jenny Iwarsson, M Thomasson, J Sundberg

According to experience in voice therapy and singing pedagogy, breathing habits can be used to modify phonation, although this relationship has never been experimentally demonstrated. In the present investigation we examine if lung volume affects phonation. Twenty-four untrained subjects phonated at different pitches and degrees of vocal loudness at different lung volumes. Mean subglottal pressure was measured and voice source characteristics were analyzed by inverse filtering. The main results were that with decreasing lung volume, the closed quotient increased, while subglottal pressure, peak-to-peak flow amplitude, and glottal leakage tended to decrease. In addition, some estimates of the amount of the glottal adduction force component were examined. Possible explanations of the findings are discussed.
Original languageEnglish
JournalJournal of Voice
Volume12
Issue number4
Pages (from-to)424-433
Number of pages9
ISSN0892-1997
Publication statusPublished - 1998
Externally publishedYes

ID: 21909501