Ya, thats difficult when communicating for me, if nobody needs to get thru to me (like being yelled at to leave a given area for whatever reason, like your example) I too unless its very loud would simply not register it unless I hear it loud enough to know im being talked to, then its just understanding what is being said to me.
_________________
DX'ed with HFA as a child. However this was in 1987 and I am certain had I been DX'ed a few years later I would have been DX'ed with AS instead.