Total posts : 45366
This is fun to think about. What happens if two or more acoustic broadcasters are on at the same time? At least with radio we have a way to separate the signals.
In my community you can be cited for violation of a noise ordinance if your sounds are “objectionable at a distance of fifty feet to a person of normal sensibility.” That’s a lot more vague and subjective than 251 uV/m.