I recorded it because it was disturbing.  It started a few minutes earlier when i heard talking when the water was running down the pipes,  It startled me.    i started to record with my go pro and I heard it in the stairs, and then again when the kitchen water was turned on.  I hear something that sounds like "afternoon" at the beginning in the stair noise.  then faint talking later. 
i must have some issue with my hearing because I.still hear it today when i listen to it. Sorry, for the troubles,  I guess I need to see a doctor then.