The present invention is a diffraction noise reduction device installed on the top of the soundproof wall in order to reduce the propagation of traffic noise generated in the road, etc. to the adjacent area. The present invention is to make the structure of the sound wave is diffracted multiplex the shape of the top of the sound barrier, so that the amount of diffraction reduction of noise increases.;When the present invention is installed on the top of the soundproof wall, the noise reduction effect is greater than that of the conventional soundproof wall of the same height. Therefore, even if the overall height of the soundproof wall is lowered, the same noise reduction effect as that of the conventional soundproof wall can be obtained.;When the present invention is installed on the top of the soundproof wall, many problems such as lack of safety against wind loads caused by installing a high soundproof wall in order to obtain a constant noise reduction effect, obstruction of view, disturbance of sunshine and increase of installation cost can be solved.;Soundproof Walls, Diffraction Sounds, Sound Absorption, Noise Reduction
展开▼
