Journal of Civil and Environmental Engineering

Chang S

Publications

• Research Article
  Reduction Effects of Shaped Noise Barrier for Reflected Sound
  Author(s): Lee J, Kim J, Park T, Chang S and Kim ILee J, Kim J, Park T, Chang S and Kim I
  
  Noise Barriers are widely installed to control the propagation of vehicle noise from highway. However, the installation may result in a secondary noise caused by reflection, especially, if there exists a residential area on the opposite side. Hence, to effectively use noise barrier, it is mandatory to first predict the noise sources taking place on the roadsides and to apply the findings afterwards. In this study, by evaluating the reduction effects of reflection noise according to different panel shapes including wing, zigzag and curved type, the optimal soundproof panel shape and design factor that can minimize the reflection noise are suggested. The sound reduction was modeled by general linear model for the case of zigzag and curved shape with nominal variances. To simulate the effects of each shape, Nord 2000 with sound traveling model was used. As a result, all panel types have .. Read More»
  DOI: 10.4172/2165-784X.1000171

  Abstract PDF