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Subglottal Pressure Oscillations Accompanying Phonation
KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH, Music Acoustics.
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2013 (English)In: Journal of Voice, ISSN 0892-1997, E-ISSN 1557-8658, Vol. 27, no 4, 411-421 p.Article in journal (Refereed) Published
Abstract [en]

Acoustic and aerodynamic properties of the voice source and vocal tract have been extensively analyzed during the last half century. Corresponding investigations of the subglottal system are rare but can be assumed to be relevant to voice production. In the present exploratory study, subglottal pressure was recorded in a male adult subject by means of tracheal puncture. Also recorded were the oral airflow and audio signals. Effects of vowel, phonation type, and vocal register shifts on the subglottal pressure waveform were examined. The moment of maximum flow declination rate was synchronous with the main positive peak of the subglottal pressure waveform. The three lowest subglottal resonance frequencies, determined by inverse filtering and long-term average spectra of the subglottal pressure during speech, were found to be about 500, 1220, and 2000 Hz, irrespective of supraglottal variations and phonation type. However, the subglottal pressure waveform was affected by the supraglottal formants, whereas the radiated vowel spectra did not show clear influence by the subglottal resonances. The fundamental frequency immediately preceding and immediately following a register break in pitch glides did not show systematic relationships with formants or with the lowest subglottal resonance.

Place, publisher, year, edition, pages
2013. Vol. 27, no 4, 411-421 p.
Keyword [en]
Subglottal resonance, Register break, Voice source, Filter, source interaction
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URN: urn:nbn:se:kth:diva-125570DOI: 10.1016/j.jvoice.2013.03.006ISI: 000321435900003ScopusID: 2-s2.0-84879745534OAI: diva2:639973

QC 20130812

Available from: 2013-08-12 Created: 2013-08-09 Last updated: 2013-08-12Bibliographically approved

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Sundberg, JohanGranqvist, Svante
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