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Exterior Noise Of A High-Speed Train

Transport by high-speed train is becoming more widespread particularly in these climate-conscious times. How can the external noise from these moving sources be efficiently measured and assessed?

knowledge, resource center, articles, external noise

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High-speed train network
Experiment and simulations

High-speed train network

The high-speed train network is growing fast worldwide, particularly in China. Many of the lines pass close to urban areas so the external noise produced by the trains is of great interest to town planners and train manufacturers alike.

This paper presents a detailed investigation into the contributions of the various high-speed train sound sources, such as the bogie, pantograph, coach center, etc., to the exterior noise, both experimentally and through simulations.

Experiment and simulations

The measurement points of pass-by noise were arranged according to the international standard ISO 3095. The noise source identification was conducted using a 78-channel wheel microphone array, and the rail vehicle moving source beamforming method was used for the source analysis. A numerical model of the exterior noise of the high-speed train was established based on the array acoustics method and the inputs come from the array measurements.

Whitepaper: Source Contribution Analysis for Exterior Noise of a High-Speed Train: Experiments and Simulations

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