| Download | - View accepted manuscript: Evaluation of acoustical conditions for speech communication in working elementary school classrooms (PDF, 854 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1121/1.2839283 |
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| Author | Search for: Sato, H.; Search for: Bradley, J. S.1 |
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| Affiliation | - National Research Council of Canada. NRC Institute for Research in Construction
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| Format | Text, Article |
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| Subject | speech intelligibility, sound insulation rating; Classroom acoustics |
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| Abstract | This paper describes the room acoustics characteristics and noise environment of 27 traditional rectangular classrooms from the 41 measured rooms. The purpose of the work was to better understand how to improve speech communication between teachers and students. The study found that on average the students experienced: teacher speech levels of 60.4 dBA, noise levels of 49.1 dB and a mean speech-to-noise ratio of 11dBA during teaching activities. The mean reverberation time in the occupied classrooms was 0.41 s, which was 10% less than in the unoccupied rooms. The reverberation time measurements were used to determine the average absorption added by each student. Detailed analyses of early and late-arriving speech sounds showed these sound levels could be predicted quite accurately and suggest improved approaches to room acoustics design. |
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| Publication date | 2008-04-01 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 50072
NRC-IRC-19213 |
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| NPARC number | 20377542 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 36be12ba-17a5-4f5c-a246-136de8dc8040 |
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| Record created | 2012-07-24 |
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| Record modified | 2020-04-15 |
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