Attenuation of road traffic noise due to detached houses - prediction of attenuation when a receiving point is lower than houses

摘要

The purpose of this paper is to present a simple method to predict excess attenuation of road traffic noise due to detached houses. ASJ shows one method, but it cannot estimate the noise level at specific individual points in a residential area. So in this paper, a one-twentieth scale model experiment is performed and a new empirical formula for excess attenuation based on only five parameters is proposed. The validity of it is verified by comparison with additional experiment, a current method and noise measurements. This method is applicable to the evaluation of the environmental quality standards for noise.