In reply to:
Since it is the basement I am talking about, do I need to put in a subfloor or can I just use carpet in the room. Will that keep the sub from shaking the house or do I need a floating floor as I have been reading about? The room within a room. I see that using a floating ceiling with I believe it is resilient chanel with two sheets of 5/8 drywall has a stc of 61. That should pretty much take care of any noise going upstairs wouldn't it?
You don't "need" a subfloor unless you are concerned about moisture (use Delta-FL with plywood and your choice of hardwood, laminate or carpet). Simple heat loss (assuming no leakage) can be dealt with using a carpet with good quality backing. My father-in-law had this done in his brand new house. I'm too paranoid about moisture and mold problems so I would always recommend going with Delta-FL or Dri-Core.
The floating ceiling (properly sealed) will definitely take care of most of the noise going upstairs.
