It's funny how people who live in the UK (tho this is Irish) mock Americans for thinking they all have the same accent yet topics like this do the same thinking the yanks all have the same accent. Brooklyn (pre hipster) sounded different than most NYC people. NYC in general sounds different than Boston. Georgia Southern accent is vastly different than a Tennessee accent. Where I live we don't have an accent at all. There is no singular 'American Accent' at all.