The supposed high pitched noise only teenagers can hear
I can't hear this noise at all, and I caution anyone using headphones from clicking it because apparently it's really irritating. At first I thought maybe my laptop just won't play that pitch, but then my cousin and my roommate who both have macbooks said they can, and it's awful. I'm kind of intrigued--who can and who can't?
Supposedly under-24s can hear it. I'm 24 and cannot, but my 23 year old roommate can!