Innovations is right. IF, you seriously want to increase the soundtransmission loss between the basement studio and the room above here is what you MUST do. Period. Increase the mass of the floor leaf above. This is done from BELOW, by ADDING 2 or more layers of drywall, BETWEEN the joists. Each layer must be sealed by caulking all joints and edges at the joists etc with resiliant caulk. GE, silicone II will work, or butyl rubber or acoustical caulk. The second layer can be held up with cleats if need be. But caulk every single joint and connection.
Second. Reroute or seperate any HVAC ducts that provide a flanking path to other rooms via ducts in the basement that are common to any other room. This mav be vary involved and beyond the scope of this reply to describe. Another thing is decoupling the ducting from the structural elements that support it by resiliant brackets or Risc clips. These are isolators designed for the application.
Third. Caulk every single pipe, wire, hole, crack, seam and anything else that penetrates the floor above your space. Even within the walls.
Fourth. Determine a method of choice for suspending a second drywall leaf from the joists above. This can be Resiliant Channel(RC-1), Risc isolator clips and hatchannel, or even suspended wood joists between the existing wood joists, although span, weight will illustrate it is not a good choice, although doable. However, BEFORE installing this method of suspension, determine what and where any risc clips must hang from the joists sides. Do this before the next step.
Fifth. Insulate with as much insulation to fill the joist cavity as full as possible, to the point that the insulation will dampen, not only the floor above, but the suspended drywall ceiling as well. Not an easy task if Resiliant channel is chosen. Although it beats angry wives in a heartbeat.
Sixth. Fasten TWO layers, 5/8" drywall to either meathod, although the success of Resiliant channel is determined by your attention to fastening detail to it. One screw through the drywall into a joist can negate a lot of time and money. I've heard it takes many more, by why tempt fate. Stagger all dryrock seams, and caulk each layer of seams before taping, and adding the next layer. Risc clips and hatchannel are more forgiving, although MUCH more expensive and time consuming. Also will improve the rating of the ceiling isolation compared to Resiliant Channel.
OK, Now, this ALL precludes enough budget to do everything below the ceiling correctly FIRST, as a resiliant suspended ceiling SHOULD hang BETWEEN walls that are also decoupled PRIOR to doing the ceiling. Although, it will still be better than NO suspended and increased MASS on the ceiling. If you choose to do the walls also, tell us, and we can tell you what and how for those too.
fitZ
