I had a student in my office today whose voice was just incredibly loud and piercing. We were going over some stuff, and it got to the point that I didn't want to ask him/her a question because I didn't want the voice sounding.
I never know whether this is something I should mention to a student. I tend not to, because maybe I'm just over-sensitive right now for some reason, but then I wonder if other people will also find the voice problematic, and maybe it would be better if the student learned to modulate a little.
While I ponder that, I'm going to eat a couple Advil. My brain feels like it's been pierced through the ears. :(