Let's talk Arizona Cardinals

Their stadium is hostile/loud? I've hardly heard of their stadium being known for their noise level. Or did I miss posts/articles about that?
It actually does get pretty loud. I live in Arizona and my friend has season tickets so I've been to a few games and heard it get loud. This will be a tough game.

On another note, my friend was telling me they're only going with 3 DB's..he seemed concerned about that..he said their OLine is shaky right now due to some injuries. Daryl Washington suspension hasn't even been lifted yet..he was suspended all of last year.