I do the same thing. Husband in his office, me in the living room...of course he is a little hard of hearing, so it's easier to text than to scream. LOL
.. or God forbid we get up and walk to wherever they are!
We also text or even phone each other around the house, and the house is small enough that if we shouted loud enough they'd hear anyway! lol
We've become so lazy, haven't we?