Hi, i'm new on this space and very happy to have found it. Yours posts are to interesting. Could send a copy of this image that you have mentioned, Fargoo?
I think, Muduckace, theres no choice, or washables ears plugs, or that big and
uncomfortable mufflers or deafness.
Atnovido, looks on
ScienceDirect - Transportation Research Part D: Transport and Environment : How much noise reduction at airports?