Author:Edwards, ADate:Sep 2009The Occupational Exposure Limit (OEL) for noise is legislated to be 85 dBA. However, owing to the energy of different frequencies the effect on the ear by sounds of different frequencies is known to vary. Also, there is recent evidence of the ...Read more
Author:Horak, E; Verhaeghe, Benoit MJA; Rust, FC; Van Heerden, CDate:Oct 1994Roads with high traffic volumes are synonymous with high road related noise levels. In Johannesburg road related noise pollution is recognised as a negative environmental impact. The Noise Pollution Unit of Johannesburg City Council regularly ...Read more