Margreet lives in a big town at 30 meters from a quiet freightline and at 80 meters from a major city road. She can hear the freightline really loud but this is no problem because she likes the sound. This is different for the road noise which she doesn't like at all. She has been working in the Harmonoise project, PA-sound systems in trains, sound isolation for the new freight train line �Betuweroute� in the Netherlands.
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