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I've been battling noise at the workplace and in my neighborhood for decades. Some useful resources: Noise Pollution Clearinghouse - https://nonoise.org/ https://nonoise.org/ Acoustilog Incorporated - https://acoustilog.com/ https://acoustilog.com/ Of special note are the legal caveats one must consider to prevail in a lawsuit. (https://acoustilog.com/daniel.html https://acoustilog.com/daniel.html) Consistent documentation is key. Maine Code of Rules - Control of Noise https://www.law.cornell.edu/regulations/maine/06-096-C-M-R-ch-375-SS-10 https://www.law.cornell.edu/regulations/maine/06-096-C-M-R-c... Note document search terms "tonal" and "one-third octave".