other than the constant, high-pitched “eeeeeeeeeeeeeeeeeeeeee” i’ve heard for the last 30 years?

WHAT?

As a guy in his 40s who’s been to more than his fair share of punk and metal gigs, was a welder until a couple of years ago, and as a youth thought that ear plugs were annoying: sorry, I didn’t hear the question.

Huh?