Proceedings of the KSR Conference (한국철도학회:학술대회논문집)
- 2003.10c
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- Pages.132-137
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- 2003
A Study on the Prediction of Train Noise Propagation Using the Spark Discharge Sound Source
스파크음원을 이용한 철도소음 전파예측에 관한 기초적 연구
Abstract
This paper concerns the prediction of railway noise propagation using scale model experiment in acoustics. In order to make acoustical experiment the digital signal processing technique are applied and spark discharge sound sources have been developed in which impulse response measured in 1/20 scale model railway. In the case of scale model experiment, it is difficult to realize sufficiently small size and directivity and to get sufficient sound energy and to get repeatability. Several type of Spark discharge sound source is made in laboratory. Experiment results are compared with the calculated results by the prediction model. As the results, it was found that railway noise could be predicted in acoustical scale model experiment using spark discharge sound source.
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