Vocal fold collision threshold pressure: An alternative to phonation threshold pressure?
2009 (English)In: Logopedics, Phoniatrics, Vocology, ISSN 1401-5439, Vol. 34, no 4, 210-217 p.Article in journal (Refereed) Published
Phonation threshold pressure (PTP), frequently used for characterizing vocal fold properties, is often difficult to measure. This investigation analyses the lowest pressure initiating vocal fold collision (CTP). Microphone, electroglottograph (EGG), and oral pressure signals were recorded, before and after vocal warm-up, in 15 amateur singers, repeating the syllable /pa:/ at several fundamental frequencies with gradually decreasing vocal loudness. Subglottal pressure was estimated from oral pressure during the p-occlusion, using the audio and the EGG amplitudes as criteria for PTP and CTP. The coefficient of variation was mostly lower for CTP than for PTP. Both CTP and PTP tended to be higher before than after the warm-up. The results support the conclusion that CTP is a promising parameter in investigations of vocal fold characteristics.
Place, publisher, year, edition, pages
2009. Vol. 34, no 4, 210-217 p.
Electroglottography, fundamental frequency, phonation threshold, singing, vocal fold contact, vocal warm-up
Fluid Mechanics and Acoustics Classical Archaeology and Ancient History
IdentifiersURN: urn:nbn:se:kth:diva-24331DOI: 10.3109/14015430903382789ISI: 000273202600009ScopusID: 2-s2.0-72049133180OAI: oai:DiVA.org:kth-24331DiVA: diva2:346588
QC 201009232010-09-012010-09-012010-09-23Bibliographically approved