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Figure 1: Noise-induced annoyance in Germany subdivided by various noise sources for the year 2002. The severity of the noise annoyance in the residential environment of the last 12 months was registered with the fi ve-level ICBEN scale from �not at all� to �extreme�.[1]

Figure 1: Noise-induced annoyance in Germany subdivided by various noise sources for the year 2002. The severity of the noise annoyance in the residential environment of the last 12 months was registered with the fi ve-level ICBEN scale from not at all to extreme.[1]