Research on auditory perception processing of high-speed railway running noise signal

At present, the traditional LAeq as a physical index is used to evaluate the high-speed railways environmental noise quantitatively. However, people in the environment with the same sound pressure level have different subjective feelings. To find a new evaluation method of high-speed railway environmental noise, it's proposed to describe the subjective feelings of the people affected by it from the psychoacoustic. In this research, this article collects high-speed railway environmental noise samples on a certain section of the Xiang-Gui route and calculates the corresponding psychoacoustic parameters based on the Zwicker model. It is found that the high-speed railway environmental noise with similar psychoacoustic annoyance will cause different auditory perceptions, and the correlation between psychoacoustic parameters and the signal characteristics of noise is generally low. In a word, Zwicker psychoacoustic annoyance model can't fully describe the auditory perception of the people affected by the highspeed railways environmental noise, which means that there are still some limitations of the model. Therefore, exploring the unique perceptual factors of the human ear for the noise in the high-speed railway and integrate it into Zwicker psychoacoustic annoyance model will become the main research direction in the next stage.