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Interior Noise Characteristics in Japanese, Korean and Chinese Subways
- Issue Date
- Sep-2013
- Publisher
- The Korean Society for Railway(한국철도학회)
- Keywords
- Train noise in a car; Interaural cross-correlation function; Autocorrelation function; Pitch
- Citation
- International Journal of Railway, v.6, no.3, pp.120 - 124
- Indexed
- OTHER
- Journal Title
- International Journal of Railway
- Volume
- 6
- Number
- 3
- Start Page
- 120
- End Page
- 124
- ISSN
- 1976-9067
- 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 (LAeq) 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 LAeq 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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