Simulation of Wayside Time-Dependent Noise Level on Shinkansen and Analysis of Noise Sources for Their Contribution to the Noise Level

This paper describes sound simulation method of time-dependent fluctuation noise Ieve'I and contributions to noise of the current collecting system and the others sources as revealed through it on Tokaido Shinkansen. 2, SIMULATION METHODIn order to simulate time dependent fluctuating noise level, the trainset must be resolved into various sound sources.Fig. 1 indicates assignment of noise sources in a trainset, for an example, 300 series trainset.While pantograph and rail/wheel are taken as point sources,