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    Measured Analysis of Noise Reduction Effect for Urban Rapid Rail Transit Viaducts by LU Sheng’an, LIN Haifeng

    Published 2025-01-01
    “…Compared with the working conditions where only the near-track sound barriers are installed, when using the sound-absorbing panels, the maximum instantaneous A-weighted level on the viaduct is further reduced by 14 to 17 dB(A) with the same train running speed, and the A-weighted level is reduced by 7 to 8 dB(A) and 5 to 7 dB(A) respectively for the noise in the 500 Hz and 800 - 1 000 Hz frequency bands at the same measuring point outside the viaduct.…”
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