Journal article
Four-day-follow-up study on the voice monitoring of primary school teachers: Relationships with conversational task and classroom acoustics
The Journal of the Acoustical Society of America, Vol.141(1), pp.441-452
01/01/2017
DOI: 10.1121/1.4973805
PMID: 28147558
Abstract
The present study has investigated the occupational voice use of 27 female primary school teachers over a four-day-follow-up. Sixty-one working-day voice samples were acquired with two contact sensor-based vocal analyzers in four schools with highly different classroom acoustics. The vocal parameters were compared with a conversational task that the teachers performed before each les-son and with the measured classroom acoustic parameters. The average equivalent sound pressure level at 1 m from the mouth, which refers to the teacher's vocal effort, and the voicing time per-centage were 71.2 dB [standard error (SE) 1.0 dB] and 29%, respectively. The teachers' mean voice level and fundamental frequency were significantly higher in the occupational setting than in the conversational one, which is by 5.5 dB (SE 0.5 dB) and 50 Hz (SE 3 Hz), respectively. Higher voice levels were observed for higher background noise levels, at a rate of 0.53 dB/dB, and a tendency of the background noise to increase with increasing reverberation time was observed at a rate of 13 dB/s. An optimal reverberation time of 0.7 s was found to minimize the voice level, since teach-ers raised their voice at lower and higher reverberation times, the latter presumably due to higher background noise levels. (C) 2017 Acoustical Society of America.
Details
- Title: Subtitle
- Four-day-follow-up study on the voice monitoring of primary school teachers: Relationships with conversational task and classroom acoustics
- Creators
- Giuseppina Emma Puglisi - Polytechnic University of TurinArianna Astolfi - Polytechnic University of TurinLady Catherine Cantor Cutiva - Politecn Torino, Dept Energy, Corso Duca Abruzzi 24, I-10129 Turin, ItalyAlessio Carullo - Polytechnic University of Turin
- Resource Type
- Journal article
- Publication Details
- The Journal of the Acoustical Society of America, Vol.141(1), pp.441-452
- DOI
- 10.1121/1.4973805
- PMID
- 28147558
- NLM abbreviation
- J Acoust Soc Am
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Publisher
- Acoustical Soc Amer Amer Inst Physics
- Number of pages
- 12
- Grant note
- Italian National Institute for Occupational Safety
- Language
- English
- Date published
- 01/01/2017
- Academic Unit
- Communication Sciences and Disorders
- Record Identifier
- 9984561516502771
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