I can relate to your experience. I've dealt with such morons for a DECADE where I live.
You have to understand that a NOISE violation recieves a LOW priority, as opposed to a *62* (party armed).
I know first hand that the police OFTEN arrive LONG after the violation for noise has been committed, and most of the violators KNOW as much, because they NEVER seem to hang around long enough (sometimes response can take as long as FORTY MINUTES...again, from first-hand experience) top get caught, unless they're stupid, and even then, all they get is a WARNING...
(that does little good)
It used to be called RESPECT for one's neighbor...
But these days, anything goes.
(and that can lead to violent behavior...from either side of the fence.)
I would suggest you take down as much information as possible, and then pass it along to the FWPD.
It might not solve the problem outright, but it lets the police know they have a problem in that area, and might be able to address it.
AND, YOU have it on record for the future that you're doing SOMETHING.