I hear music coming out of my window unit, coming from the grill like a loudspeaker. I know it's coming from outside somewhere, probably another apartment but it sounds exactly like it originates from the AC unit. Sometimes if I open my window (NOT the one with the AC unit) I will hear things from outside that sound like they are coming from somewhere inside the room. I suppose that sound waves can reflect about different surfaces and interfere to create some sort of pseudo acoustic hologram? Our brains make a model of reality based on a whole bunch of assumptions.
Do you have metal tooth fillings? I've heard some combinations of metal tooth fillings can receive radio signals.
Could it be an acoustic hologram, cuz sometimes I hear stuff that sounds like it's coming from inside the room but it could only have come from outside. News on radiator two...lmao