International Journal of Railway

The Korean Society for Railway (한국철도학회)
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Interior Noise Characteristics in Japanese, Korean and Chinese Subways

  • Soeta, Yoshiharu (Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)) ;
  • Shimokura, Ryota (Department of Otorhinolaryngology-Head and Neck Surgery, Nara Medical University) ;
  • Jeon, Jin Yong (Department of Architectural Engineering, Hanyang University) ;
  • Lee, Pyoung Jik (EMPA, Swiss Federal Laboratories for Materials Science and Technology, Acoustics Research Unit, School of Architecture, University of Liverpool)
  • Published : 2013.09.30
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Abstract

The aim of this study was to clarify the characteristics of interior noise in Japanese, Korean, and Chinese subways. The octave-band noise levels, A-weighted equivalent continuous sound pressure level ($L_{Aeq}$) and parameters extracted from interaural cross-correlation/autocorrelation functions (ACF/IACFs) were analyzed to evaluate the noise inside running train cars quantitatively and qualitatively. The average $L_{Aeq}$ was 72-83 dBA. The IACF/ACF parameters of the noise showed variations in their values, suggesting they are affected by the characteristics of the trains running, wheel-rail interaction, and cross-section of the tunnels.

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References

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