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. 2015 Sep 9;26(6):575–585. doi: 10.1038/jes.2015.56

Figure 2.

Figure 2

Railway noise recordings at 560 m distance from a freight train railway line during the night. Background noise is dominated by nature sounds and distant road traffic noise. Intermittency ratio (IR)=87%. The portions of the curve marked “gray” are used to calculate Leq,T,Events.

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