| Title |
Sound Insulation Performance of Noise Barriers for Apartment House Site near Road by Field Measurement |
| Abstract |
Noise barriers are now in common use as a method of a abating noise. The increase in traffic noise nowadays, and the need for efficient protection against it, have given rise to full scale site measurement of horizontal and vertical insertion loss of noise barriers, both absorbent barrier and reflective barrier. The noise level measurement was carried out on the barriers in apartment site near road, and an array of microphone per 5floor vertically, per 10m up to 50m horizontally behind barrier and before road was used to measure insertion loss for each barrier. The aim of this paper is to show the horizontal and vertical insertion loss of each barrier type and to suggest reference capable of pratical applications as design of noise barrier. |