Reference : The Vocal Impact of a Prolonged Reading Task at two Intensity Levels
Scientific congresses and symposiums : Unpublished conference
Human health sciences : Otolaryngology
http://hdl.handle.net/2268/88520
The Vocal Impact of a Prolonged Reading Task at two Intensity Levels
English
Remacle, Angélique mailto [Université de Liège - ULg > Département des sciences cognitives > Logopédie des troubles de la voix >]
FINCK, Camille mailto [Centre Hospitalier Universitaire de Liège - CHU > > O.R.L. >]
Roche Anne [ > > ]
Morsomme, Dominique mailto [Université de Liège - ULg > Département des sciences cognitives > Logopédie des troubles de la voix >]
29-Mar-2011
Yes
No
International
The Occupational Voice: Assessing the voice in the work place
28 et 29 mars 2011
University College of London
London
UK
[en] vocal load ; output level ; acoustic measurements ; self-rating
[en] The purpose of this study is to evaluate the impact on voice of both duration and intensity level of 2 hours of continuous oral reading. Fifty normophonic women (mean age: 25.4 years) undergo two sessions of voice loading in which the required intensity level of voice varied: 60-65 dB(A) for the first session, and 70-75 dB(A) for the second session. The results of loading are assessed with regard to objective data and self-rating of voice obtained every 30 minutes during the oral reading tasks. Serial voice quality objective data is obtained by use of Multi-Dimensional Voice program (Average fundamental frequency (AvF0), Jitter percent (Jitt), Shimmer percent (Shim), Noise-to-Harmonic Ratio (NHR)). Serial measurements of maximum phonation time (MPT) and voice range are carried out by use of Kay Elemetrics Computerized Speech Lab. The following characteristics are also categorized by the use of a 100 mm visual analogue scale every 30 minutes of the oral reading tasks: voice quality, feeling of phonation effort, vocal fatigue, and laryngeal discomfort.
Results indicate that AvF0, lowest frequency of voice range, softest output of phonation, feeling of phonation effort, vocal fatigue and laryngeal discomfort rise during prolonged oral reading. On the contrary, Shim and self-rating of voice quality decrease significantly with the passage of time during the voice loading. Jitt and NHR tend to decrease. MPT decreases after the first 30 minutes but increases afterwards. AvF0 and highest frequency of voice range are the only parameters influenced by the required intensity of oral reading task: these values are significantly higher in the 70-75 dB session compared to the 60-65 dB session.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/88520

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