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http://dx.doi.org/10.5050/KSNVE.2010.20.9.791

A Study on the Test Method for Noise Reduction Devices Installed on the Noise Barriers  

Kim, Chul-Hwan (한국도로공사)
Chang, Tae-Sun (한국도로공사)
Kim, Deuk-Sung (한국도로공사)
Kim, Dong-Jun (한국종합기술)
Chang, Seo-Il (서울시립대학교 환경공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.20, no.9, 2010 , pp. 791-796 More about this Journal
Abstract
Installing noise barriers is the most common method for reducing the highway traffic noise to the road side residential area. After the report about edge potential concept of a noise barrier, various types of noise reducing devices(NRDs) called "noise reducers" have been suggested for getting more shielding effect on the top of highway noise barriers. But, it has been doubtful about effect of the NRDs in field because there was no appropriate and unified method to estimate the acoustic performance by using field measurement of the NRDs in Korea. In this study, the authors have considered to setup a practical method to test and estimate the acoustic performance of NRDs. For eliminating the noise reduction effect of the NRDs height itself, the source and measuring points are adjusted as highly as the NRDs height. For the frequency weighting in the estimation of the NRDs effect, the highway noise spectra were measured at asphalt and concrete road side and then averaged for a unit spectral parameter.
Keywords
Road Traffic Noise; Noise Barrier; Noise Reduction Device; Noise Reduction Effect; Highway Noise Spectrum;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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2 Notification No. 954(on July 17, 1992), Japanese Government of Construction.
3 Okubo, T. and Yamamoto, K., 2007, “Procedures for Determining the Acoustic Efficiency of Edge-modified Noise Barriers,” Applied Acoustics, Vol. 68, pp. 797-819.   DOI
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