Abstract
A transparent sound-proof panel which was zigzag shaped was developed and tested of its effects for installed with 20 m extension on site. The reflected and diffracted sound were measured for travelling and fixed noise. The noise barrier was tested not only for plane panel, but also mixed composition which was combined shaped and plane ones. In result, the shaped barrier showed average 1.01 dBA for the SUV travelling vehicle. For fixed noise, increased effects for reflected sound was for distant source, especially, 1.18 dBA for 3 m distance from installed noise barrier. Key words: Noise Barrier, Traffic Noise, On-Site Soundproof, Shaped Panel
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