A study on the Measurement Technology of Noise sources of the High-Speed Trains

초록

Not only the number of microphones, but also the array microphone configuration determines the properties and ability to localize and quantify, or determine source strengths of high-speed train noise sources, which is the goal of this work. The microphone array should perform well in most of the interesting frequency region, inclusive low-frequency behavior. In order to improve array performances, the microphone configurations are studied to optimize the performance for the identification of the acoustical characteristics of the train noise sources and to realize the configuration for the build-up and measurement in the field.