Here we have always had noise restrictions but the way it is enforced to be anything but a nuisance to a court would require the accuser to produce scientific data showing that the noise producer exceed the legal level.
The noise measuring equipment is in very limited supply. Usually one device for each law enforcement jurisdiction is what is observed. That doesn't even consider that it is 10 years old, has never been calibrated and no one knows exactly where it is at any given moment.
Since noise enforcement is also involved in house parties with live bands, illegal use of fire works, landscape equipment like hurricane leaf blowers and commercial lawn mowers, there is a lack of will by the law enforcement authorities to enforce.
We also have low flying commercial jet aircraft illegally below the minimum altitudes as well as trains in the distance.
The motorcycles late at night running flat out up to 14 or 15,000 rpm in top gear with open exhausts are also in the mix.
Enforcement locally would just be involved with what the pet peeve of the day would be and you'd just have to be in the wrong place at the wrong time and just be poking the lion with a stick at the zoo? The odds of that are very low but hey, someone always wins the Power Ball regardless of the odds?
I've seen Police show up at local "bike club" meets and tell the owners "its sounds a little loud" with just warnings, etc, but they seem to be more concerned in looking for "outstanding warrants". So here at least, nothing is likely to change anytime soon. Don't go driving around with a "motorcycle club", don't go racing them flat out late at night, don't go reving the engine to 7,000 rpm in a "Hospital zone" and you are most likely going to be ok?