Research On The Acoustic Characteristics And Acoustic Considerations Of Noise-barrier

In order to understand the acoustic characteristic of noise-barrier, this text with deeply into the points from analyzing the principle of noise attenuation by noise-barrier, put greatemphasis on research with studying the mathematics model of insert loss and acousticconsiderations of noise-barrier.The paper is focus on not only in the analysis of the principle of noise-barrier, but also in the sound distribution characteristic behind the barrier on some typical roads(such as highway, combinded elevated road and elevated railway), and the mathematics model of insert loss, obtain the mathematics formula. By comparing the calculating results and with measure results, it was shown that the model is suitable for the prediction of the insert loss of noise-barrier on the highway. Investigated on the aspects of acoustic considerations, structure and landscape based on the mathematics model of insert loss, and some new iders are presented to the optimization design of noise-barrier.