Prediction on insertion loss of detached houses against conventional railway noise

Abstract

This paper describes the effect of excess attenuation of conventional railway noise due to detached houses. The excess attenuation due to detached houses were estimated by using both ASJ RTN-Model 2013, which is generally used for road traffic noise, and the noise prediction model of conventional railway. It is found that the overall trends are well-predicted in both the case of the level section and the viaduct section. In the case of the level section, slightly worse agreement is found at some points. This is due to the influence on acoustic reflection on the house behind the predicted point and the screening effect of houses. In the case of the viaduct section, agreement is poorer. This is because the effect of sound propagated over houses is not included in the ASJ model.