Anecdotally I've noticed that music at concerts and bars is not as loud as it was in the 1980s. I went to a Rolling Stones concert in the late 1980s and was practially deaf for several hours afterwards. Saw the Who like 10 years ago and it wasn't close to painfully loud. Don't see near as much live music in bars as I used to but it also seems to be turned down compared to what used to be done.