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Assessment of the sound quality of classrooms through Speech Transmission Index (STI), Sound Definition (D50) and Reverberation Time (RT)
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In: Forum Acusticum ; https://hal.archives-ouvertes.fr/hal-03242464 ; Forum Acusticum, Dec 2020, Lyon, France. pp.2789-2792, ⟨10.48465/fa.2020.0623⟩ (2020)
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Abstract:
International audience ; In recent years, several studies started to focus on the sound evaluation of classrooms, to verify the acoustic comfort. These assessments are the first?s steps of the development of strategies for improvement of classrooms comfort, aiming the enhancement of the learning process of pupils and providing good conditions for teaching. This study is investigating room acoustic descriptors with great importance in classroom acoustics, which are the Speech Transmission Index (STI), Sound Definition (D50) and Reverberation Time (RT). The investigated classrooms are located in two buildings from the Federal University of Paran�, one from the 1960s and another from 2016. In 2007, some of the classrooms in the old building had a new roof covering. The old material, with a good sound absorption material, was replaced by a PVC coating. To characterize the acoustic comfort, room acoustic measurements and simulations were performed, and the results were compared with existing standards ISO 9921:2003 related to STI and ANSI/ASA that rules the RT. The room acoustic descriptor D50 was evaluated according to recommendations from Fasold & Veres (2003). As expected, the new building presented classrooms with greater acoustic comfort. In the classrooms of the old building, the refurbishment of ceilings decreased their acoustic quality, as shown in the results of the comparison between measurements and simulations of classrooms, with original and refurbished ceilings. In short, this paper shows that the decision to replace the original room coverings with PVC resulted in a gross error.
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Keyword:
[PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]; [PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph]; Classroom Acoustics; Reverberation Time; Sound Definition; Speech Transmission Index
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URL: https://hal.archives-ouvertes.fr/hal-03242464/document https://doi.org/10.48465/fa.2020.0623 https://hal.archives-ouvertes.fr/hal-03242464 https://hal.archives-ouvertes.fr/hal-03242464/file/000623.pdf
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A Pilot Study on the Relationship between Primary-School Teachers’ Well-Being and the Acoustics of their Classrooms
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In: International Journal of Environmental Research and Public Health ; Volume 17 ; Issue 6 (2020)
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The ‘acoustic health’ of primary school classrooms in Brisbane, Australia
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Improved signal-to-noise ratio and classroom performance in children with autism spectrum disorder: a systematic review
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Education and Advocacy for Individuals with Hearing Loss
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In: http://rave.ohiolink.edu/etdc/view?acc_num=toledo1470162746 (2016)
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An investigation into how the acoustics of open plan and enclosed classrooms affect speech perception for kindergarten children
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Investigating the acoustics of a sample of open plan and enclosed Kindergarten classrooms in Australia
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An Investigation into the acoustics of an open plan compared to enclosed Kindergarten classroom
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Investigating the effect of intrusive noise levels on speech perception in an open-plan kindergarten classroom
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The Impact of Building Acoustics on Speech Comprehension and Student Achievement
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In: Architectural Engineering -- Faculty Publications (2014)
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Examining the Relationships between Monaural and Binaural Classroom Acoustics Parameters and Student Achievement
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In: Architectural Engineering -- Faculty Publications (2010)
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Do children with reading delay benefit from the use of personal FM systems in the classroom?
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B. Current Practices in Determining Eligibility Criteria ………………………… … 20
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In: http://www.csha.org/position_papers/capd.pdf
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