- Volume 14 Issue 6
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Designing a Microphone Array System for Noise Measurements on High-Speed Trains
고속철도 차량의 소음 측정을 위한 마이크로폰 어레이 설계 연구
- 노희민 (한국철도기술연구원 고속철도연구본부) ;
- 최성훈 (한국철도기술연구원 고속철도연구본부) ;
- 홍석윤 (서울대학교 조선해양공학부) ;
- 김석원 (한국철도기술연구원 고속철도연구본부)
- Received : 2011.09.14
- Accepted : 2011.10.27
- Published : 2011.12.26
In this paper, noise source localization of the Korean high speed train was conducted by using delay and sum beam-forming method of a microphone array. At first, the microphone array having irregular configuration was designed and the resolution of which was analyzed from parameters such as 3-dB bandwidth and maximum side-lobe level. After the demonstration, the microphone array was applied on the high speed train and noise localization of the high speed train driving at 300 km/h was performed successfully.
Grant : 시스템 성능평가 기술개발
Supported by : 국토해양부
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- Investigation into external noise of a high-speed train at different speeds vol.15, 2014, https://doi.org/10.1631/jzus.A1400307
- Theoretical Analysis on the Array Microphone Measurement for Noise from Rails vol.33, pp.4, 2014, https://doi.org/10.7776/ASK.2014.33.4.238