I read a letter to the editor about sound levels from wind turbines and different regulations about them in different states. Before a person should make comments about noise I strongly recommend that you buy a sound meter and listen to the differences between the regulations.
Also these sound waves must be tested at the home in all directions as shapes of trees, foliage, mountains, adjoining buildings and wind direction change dB’s received.
Insulation and window types also greatly affect indoor dB’s. Also different humidity levels affect dB’s received. So as you see it’s not just a simple one test tells all.
I managed a hotel in Baltimore MD years back and had a contract with a trucking company that used refrigerated trucks. I learned a good lesson about sound, sound waves, sound shapes and so on. I figured having the trucks with the refrigeration units…
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