The effect of an artificially lengthened vocal tract on estimated glottal contact quotient in untrained male voices

Journal of Voice : Official Journal of the Voice Foundation
Christopher S Gaskill, Molly L Erickson

Abstract

The use of hard-walled narrow tubes, often called resonance tubes, for the purpose of voice therapy and voice training has a historical precedent and some theoretical support, but the mechanism of any potential benefit from the application of this technique is not well understood. Fifteen vocally untrained male participants produced a series of spoken /a/ vowels at a modal pitch and constant loudness, before and after a minute of repeated phonation into a 50-cm hard-walled glass tube at the same pitch and loudness targets. Electroglottography was used to measure the glottal contact quotient (CQ) during each phase of the experiment. Single-subject analysis revealed statistically significant changes in CQ during tube phonation, but with no discernable pattern across the 15 participants. These results indicate that the use of resonance tubes can have a distinct effect on glottal closure, but the mechanism behind this change remains unclear. The implication is that vocal loading techniques such as this need to be studied further with specific attention paid to the underlying mechanism of any measured changes in glottal behavior, and especially to the role of instruction and feedback in the therapeutic and pedagogical application of...Continue Reading

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Citations

Jun 17, 2014·Journal of Voice : Official Journal of the Voice Foundation·Makoto OgawaHidenori Inohara
May 23, 2014·Logopedics, Phoniatrics, Vocology·Camille RobieuxAntoine Giovanni
Nov 30, 2013·Journal of Voice : Official Journal of the Voice Foundation·Ellen R ConroyJack J Jiang
May 21, 2013·Journal of Voice : Official Journal of the Voice Foundation·Marco GuzmanAhmed Geneid
Mar 16, 2013·Journal of Voice : Official Journal of the Voice Foundation·Marco GuzmanCristina Jackson-Menaldi
Nov 16, 2011·Journal of Voice : Official Journal of the Voice Foundation·Abdul-latif HamdanDollen Tabri
Nov 4, 2015·Journal of Voice : Official Journal of the Voice Foundation·Marco GuzmánAnne-Maria Laukkanen
May 10, 2011·Journal of Voice : Official Journal of the Voice Foundation·Christopher S Gaskill, Dana M Quinney
Aug 4, 2016·Logopedics, Phoniatrics, Vocology·Marco GuzmanMatthias Echternach
Oct 23, 2016·Journal of Voice : Official Journal of the Voice Foundation·Marco GuzmanAnne-Maria Laukkanen
Jul 11, 2013·Journal of Speech, Language, and Hearing Research : JSLHR·Laura EnfloAnita McAllister
Aug 3, 2019·The Journal of the Acoustical Society of America·Rita R PatelAlessandra Verdi
Jun 6, 2018·Journal of Voice : Official Journal of the Voice Foundation·Jing KangJack J Jiang
Nov 15, 2018·Journal of Voice : Official Journal of the Voice Foundation·Kharina FrisanchoCamilo Quezada
May 12, 2020·Journal of Voice : Official Journal of the Voice Foundation·Brian Saccente-KennedyRuth Epstein
Feb 24, 2011·Current Opinion in Otolaryngology & Head and Neck Surgery

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