고속철도 소음원 분리 및 정량화를 위한 측정기법 연구

In this paper a study on the microphone array configuration and on the data calculation is introduced, which is aimed at using in the noise source identification and modeling of the high speed train. By means of numerical study and experiments, microphone arrangements for a microphone array and calculation method of the source strengths are investigated for the purpose of enhancing the analysis performance in terms of the resolution and the dynamic range in the source localization. The aim here is to investigate properties of some different microphone configurations to enable finding the best array/microphone configurations, to resolve/quantify noise from by-passing high speed trains with the speed of 400km/h. Some numerical and experimental results are shown and discussed.