3 Rivers used to be horribily loud, it was great! Heinz Field is really quiet compared to 3 Rivers, it is all in the engineering of the stadium. 3 Rivers being almost Bowl shaped could only be LOUD whereas, Heinz Field with the open end leaves a lot to be desired.

I have never been there but some friends in KC told me that Arrowhead takes on that college atmosphere and is really, really loud.