Voice Changes in Real Speaking Situations During a Day, With and Without Vocal Loading: Assessing Call Center Operators

Journal of Voice : Official Journal of the Voice Foundation
Boaz M Ben-David, Michal Icht

Abstract

Occupational-related vocal load is an increasing global problem with adverse personal and economic implications. We examined voice changes in real speaking situations during a single day, with and without vocal loading, aiming to identify an objective acoustic index for vocal load over a day. Call center operators (CCOs, n = 27) and age- and gender-matched students (n = 25) were recorded at the beginning and at the end of a day, with (CCOs) and without (students) vocal load. Speaking and reading voice samples were analyzed for fundamental frequency (F0), sound pressure level (SPL), and their variance (F0 coefficient of variation [F0 CV], SPL CV). The impact of lifestyle habits on voice changes was also estimated. The main findings revealed an interaction, with F0 rise at the end of the day for the students but not for the CCOs. We suggest that F0 rise is a typical phenomenon of a day of normal vocal use, whereas vocal loading interferes with this mechanism. In addition, different lifestyle profiles of CCOs and controls were observed, as the CCOs reported higher incidence of dehydrating behaviors (eg, smoking, caffeine). Yet, this profile was not linked with voice changes. In sum, we suggest that F0 rise over a day can potential...Continue Reading

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Citations

Jun 1, 2016·Frontiers in Neuroscience·Britt HadarBoaz M Ben-David
Dec 19, 2017·Logopedics, Phoniatrics, Vocology·Eduardo Fuentes-LópezKarem V Contreras
Apr 27, 2019·Journal of Speech, Language, and Hearing Research : JSLHR·Boaz M Ben-DavidVered Shakuf
Feb 10, 2021·Journal of Speech, Language, and Hearing Research : JSLHR·Tami Harel-ArbeliBoaz M Ben-David
Sep 19, 2019·Journal of Voice : Official Journal of the Voice Foundation·Supraja AnandCamille Gray
Mar 23, 2021·Journal of Voice : Official Journal of the Voice Foundation·Bárbara Tayná Santos Eugênio da Silva DantasMaria Fabiana Bonfim de Lima-Silva
Sep 4, 2021·Journal of Voice : Official Journal of the Voice Foundation·Chandini B NairUsha Devadas
Dec 12, 2018·Journal of Voice : Official Journal of the Voice Foundation·Michal IchtLeah Fostick

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