2017
Yes
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5843241/
Reenen, Coralie
Africa
Experimental
Epidemiology Study
Students
Elementary (K-5)
Middle/Jr High (6-8)
High School (9-12)
Noise is disadvantageous for learners, particularly those with sensory, language or
learning impairments. Research and international guidelines show that the ideal ambient level
is 30 dBA – 35 dBA, allowing the achievement of an ideal signal-to-noise ratio (SNR) of +15 dB,
and the ideal reverberation time is 0.4 s – 0.6 s. Various South African regulations discussed are
inconsistent regarding ambient noise level (ranging from 35 dBA – 50 dBA) and say little about
reverberation time for classrooms.
learning impairments. Research and international guidelines show that the ideal ambient level
is 30 dBA – 35 dBA, allowing the achievement of an ideal signal-to-noise ratio (SNR) of +15 dB,
and the ideal reverberation time is 0.4 s – 0.6 s. Various South African regulations discussed are
inconsistent regarding ambient noise level (ranging from 35 dBA – 50 dBA) and say little about
reverberation time for classrooms.