Noise Test and Objective Parameters Analysis of Sound Quality for High Speed Trains

In vibration and noise reduction design of high speed train,sound quality has become an important indicator of comfort evaluation.In this paper,based on the theory by Zwicker who presented objective quantificational methods for subjective evaluation of the noise,the experimental data of internal noise of high speed railway trains is analyzed through the calculation of four objective evaluation parameters of noise:loudness,sharpness,roughness and fluctuation strength.Finally,the status and distribution regulations of various psychoacoustics parameters are obtained in the typical position of the train driven at several constant speeds.This work provides some reference basis for sound quality research of the high speed railway trains.