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:: Volume 7, Issue 1 And 2 (5 1999) ::
aud 1999, 7(1 And 2): 76-82 Back to browse issues page
a noise measurement study of the traffic in the Modarres High way In Tehran
Amir Hossein Izad Doustdar , Parvin Nasiri, Majid Abbas Pour
Abstract:   (5509 Views)

We measured the noise caused by Vehicles and its subjective effects in the Modarres high way In Tehran. we examined 143 cases in 11 stations in the mentioned pathway with an accuracy of 95%  and a standard deviation of 39%. The noise criteria of Leq and the number of vehicles were determined in dBA. The loudness contours were also measured in some stations to determine the subjective impacts of noise. Then the correlation of the responses of the interviewees with sound pressure level was measured. Based on our findings, decrease of  the noise of traffic sources should be considered three levels: the first level is noise reduction at the level of source, e.g. the vehiclesthe second is Noise reduction at the traffic level and the third is noise reduction at the level of general activity.

Keywords: noise measurement, High way noise, loudness contours, noise reduction
Full-Text [PDF 4658 kb]   (1544 Downloads)    
Type of Study: Research |
Accepted: 2013/08/26 | Published: 2017/11/8
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Volume 7, Issue 1 And 2 (5 1999) Back to browse issues page
شنوایی شناسی - دانشگاه علوم پزشکی تهران Bimonthly Audiology - Tehran University of Medical Sciences
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