The pitch rise paradigm: a new task for real-time endoscopy of non-stationary phonation

Folia Phoniatrica Et Logopaedica : Official Organ of the International Association of Logopedics and Phoniatrics (IALP)
Oliver RaspUlrich Hoppe

Abstract

As standard stroboscopy is restricted to the recording of periodic vocal fold vibrations, observations of non-stationary laryngeal mechanisms demand real-time recording systems, the most advanced being the high-speed video technique. It allows the registration of laryngeal parameters during a variation of the fundamental frequency. The aim of this study was to compare amplitude and frequency parameters of vocal fold vibration during stationary and non-stationary phonation, i.e. a monotonous pitch rise. Twenty-nine young female adults with no incidence of voice disorders were examined while performing two different phonation tasks: sustained phonation with a constant frequency and a monotonous pitch rise. Endoscopic recordings and the acoustic signals were acquired simultaneously. Both acoustic and laryngeal parameters were derived for short time intervals of 17.8 ms for the constant pitch and pitch rise conditions. Instantaneous frequency, sound pressure level, vibratory amplitudes of the vocal folds and the type of glottal closure were compared. At the beginning of the pitch rise, the acoustic and laryngeal parameters were similar to the parameters that occurred within the sustained phonation conditions. In contrast, the laryn...Continue Reading

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Citations

Oct 30, 2007·Folia Phoniatrica Et Logopaedica : Official Organ of the International Association of Logopedics and Phoniatrics (IALP)·Harm K Schutte, Jan G Svec
Apr 10, 2008·The Journal of the Acoustical Society of America·Tobias WurzbacherJörg Lohscheller
Feb 9, 2010·The Journal of the Acoustical Society of America·Anxiong YangMichael Döllinger
Sep 1, 2011·The Journal of the Acoustical Society of America·Anxiong YangMichael Dollinger
Feb 9, 2010·Computer Methods and Programs in Biomedicine·Daniel VoigtJörg Lohscheller
Aug 31, 2006·The Journal of the Acoustical Society of America·Tobias WurzbacherJörg Lohscheller
Nov 15, 2011·Folia Phoniatrica Et Logopaedica : Official Organ of the International Association of Logopedics and Phoniatrics (IALP)·Venkataraja U AithalVasudeva Guddattu
Jan 25, 2012·Journal of Speech, Language, and Hearing Research : JSLHR·Stephanie M ShawSimeon Smith
Dec 4, 2008·Logopedics, Phoniatrics, Vocology·David M Howard, Jan G Svec
Mar 23, 2019·Medical & Biological Engineering & Computing·Pablo GómezMichael Döllinger
Aug 7, 2021·Journal of Voice : Official Journal of the Voice Foundation·Marion SemmlerAnne Schützenberger

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