https://www.railwaypro.com/wp/a-new-noise-reduction-system-tested-by-tmh/
Innovative train noise reduction system was developed by TMH
Apr 22, 2020 - Transmashholding has developed and tested an innovative train noise reduction system for air conditioning which will be installed on the new rolling stock
train noisedeveloped byinnovativereductionsystem
https://eprints.soton.ac.uk/506431/
Numerical Simulation of the Aerodynamic Noise of the Leading Bogie of a High-Speed Train - ePrints...