At 14th level, a Rogue gains the Blindsense feature, which states the following:
if you are able to hear, you are aware of the location of any hidden or invisible creature within 10 feet of you.
The extent and phrasing of this ability seems a bit vague to me. Is there a limit on obstructions between the Rogue and the target? For example, can a Rogue detect the presence of someone within 10' of them when the other person is in another corridor with a 5'-thick stone wall between them?
It seems that the only limitation on Blindsense is if the Rogue is Deafened, which would prevent them from hearing and activating the ability. Is this correct?
FYI, the following Crawford tweet regarding Blindsight may be relevant here:
You can't hide from a creature if you're in its blindsight radius, unless magic cloaks your presence entirely.
You are Daredevil...light
So long as you can hear, you know the location. You hear the heartbeat of the guy on the other side of the wall. Do note though you only know the LOCATION of the creature, you do not know WHAT the creature is. So you don't know if it's a threat, a friend, a monster, a humanoid, a draconequus, what.