Woodside Terraces | 6 fl | U/C

[embe]

Friends of mine moved into a new condo in Ottawa that has concrete walls between units.  The place is quiet as a tomb, although when their dog barks, people a couple of units away can apparently hear it - the sound seems to pass through the air venting.

Looks like some independent air conditioning per unit on this one. 

Might be an air return system or something the dog barks transfer through at your friends place.  And dogs can bark pretty loud and at a frequency that carries differently than normal conversation.  (lot of dogs in my area and I hear 'em all the time).