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http://dx.doi.org/10.7782/IJR.2013.6.3.120

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)

Publication Information

International Journal of Railway / v.6, no.3, 2013 , pp. 120-124 More about this Journal

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.

Keywords

Train noise in a car; Interaural cross-correlation function; Autocorrelation function; Pitch;

Citations & Related Records

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