I have the same problem with a big compressor. I'm in a community workshop and we recently had to downsize. Now we have neighbors who want the 3 HP compressor noise to go away. I'm about to build a closet around the compressor using MLV and insulation. Any ideas??
I have a similar problem with a neighbor of my moms, a muppet that runs a non-silent compressor basically the whole day - every day.
I offered him to gift him an enclosing which would make that thing noiseless, but he's quite antisocial (well, he has already been to court with basically everyone 300m around him, repeatedly) and refused because 'I like the sound'. Other neighbors tried to sue him to have peace and quiet in their gardens, but lost as he manages scrape just below legal limits. As we're not allowed to tar and feather him... I'm currently working on leasing the 20cm strip of land directly next to his plot (from his direct neighbor, who is also fed up with him, too old to fight himself but too young to not die soon enough to make it not matter) to erect a permit free (in that area) solar installation - construction of which will certainly he at any and all legal limits, like
needing that nice and sturdy 25m x 4m x 20cm (LxHxD) concrete wall to not fall over.
Life could be so nice, if not for the ones without whom it would be better...
As you are interested in
not annoying your neighbors... I searched a bit and here you go: