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DIN EN 16272-3-2/A1 2024-05-06 Railway applications - Infrastructure - Noise barriers and related devices acting on airborne sound propagation - Test method for determining the acoustic performance - Part 3-2: Normalized railway noise spectrum and single number ratings for direct sound field applications; German and English version EN 16272-3-2:2023/prA1:2024 More  Comment 

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