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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

Abstract

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.

Acknowledgement

Grant : 시스템 성능평가 기술개발

Supported by : 국토해양부

References

  1. D.H. Koo, J.C. Kim, T.W. Park (2002), A Study on Characteristics of Noise Propagation for Railway, Journal of the Korean Society for Railway, 5(1), pp. 63-68.
  2. F. Possion, P.E. Gautier and F. Letorneaux (2008) Noise Sources for High Speed Trains: a Review in the TGV Case, Noise and Vibration Mitigation for Rail Transportation Systems, Notes on Numerical Fluid Mechanics and Multidisciplinary Design, Volume 99, pp. 71-77.
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  5. David Thompson (2009) Railway Noise and Vibration, pp. 47-49.
  6. Bruel & Kjear (2004) Technical Review No.1, Beamforming.
  7. Sound View Instruments (2010) Designing a Microphone Array System for Noise Measurements on High-Speed Trains.
  8. C. Mellet, F. Letournearux, F. Possion, C. Talotte (2006) High speed train noise emission: Lasted Investigation of the aerodynamic/rolling noise contribution, Journal of Sound and Vibration, pp. 535-546.

Cited by

  1. Aerodynamic Noise Characteristics of High-speed Trains by the Beamforming Method vol.15, pp.3, 2012, https://doi.org/10.7782/JKSR.2012.15.3.231
  2. Investigation into external noise of a high-speed train at different speeds vol.15, 2014, https://doi.org/10.1631/jzus.A1400307
  3. 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