Dosimeter measures of sound exposure experienced by university students

Abstract

There is increased concern about excessive sound exposure, especially in students, resulting from the use of Ipods and similar devices. Such exposure needs to be considered in light of the daily noise dose such users experience. In this study five university students wore noise dosimeters for 10 h per day for 5 days, and noise levels were recorded every minute. The students also maintained a diary of their activities (activities were noted at least every half hour) during the time they wore the noise dosimeters. The diary was standardized so that each student used the same diary format. Results indicating the noise levels, noise dose, and the relationship of the levels to the students activities will be presented and discussed. In general the noise exposure experienced by these students was usually mild (less than 60 dBA) to moderate (between 60 and 75 dBA).

Effect of transformer noise on the neurophysiology of SD rats

“…The sound level varied from 65±3 or 60±3 dB. Experimental groups were continuously exposed to the recorded noises for 10 h/day (from 22:00 to 8:00) for 8 weeks (12,18). Each group had free access to food and water.…”