Estimation of Shinkansen Noise in Cuttings by Prediction Model

Abstract

This paper introduces a prediction scheme to estimate the railway noise at cuttings. First, noise distribution is investigated through both a field test with running Shinkansen vehicles and a scale-model experiment. From these tests, it is found that the noise from Shinkansen vehicles propagate obliquely upward. The noise from far-side vehicle is greater than from near-side vehicle. In all case, the propagation direction does not depend on the vehicle velocity and position. Next, on the basis of the acoustic behaviors obtained in these tests, the prediction model which consists of five sound sources has been developed. The results of prediction model were compared with the measurement obtained by the field test and scale-model experiment, and it is found that the overall trends are well-predicted. However, further studies are required, since level differences between the prediction and measurement obtained in scale-model experiment are up to 4dB.