I've done a lot of research regarding what needs to be done to achieve sound transmission reduction for a dedicated home theater, but I haven't run across a lot of answers regarding this problem when attempting to do it for only part of a full basement. If there is something out there, please direct me so I can look at the information. I understand the basic concepts of decoupling, absorption, adding mass, and damping. My question is, if I just do these in part of a basement, is it even worthwhile? Are there too many flanking paths that would defeat the purpose?
My main goals are to damp sound going into the adjacent bedroom and into the main floor. Here is the basement layout.
The south wall is the one with the couch against it. The room in the lower right hand corner of the diagram is a utility room.
Here is what I am planning to do with the main area of the basement:
1. Glue 2 inches of XPS insulation to the south and east foundation walls.
2. Put in steel studs on the south and east walls, leaving the stud cavities open.
3. Put up resilient clips and hat channel on the ceiling (will think about doing GG and second layer of drywall depending on expense, but headroom is also a concern).
4. Do resilient clips and hat channel along with double layer of drywall and GG on the bedroom wall adjacent to the main area.
5. Put up canister lights with backer boxes.
6. Put up R-13 or R-19 insulation in the ceiling joists and R-13 insulation in the bedroom wall adjacent to the main area.
7. Put in a recessed screen for use with a projector (any suggestions on how to damp sound with one of these?).
8. Install a solid-core interior door for the bedroom.
I would theoretically like to wall off the area where I will have the screen, but my wife is extremely hesitant to do this because it takes away the openness of the basement.
Any insights, including any changes to my plans to help with sound transmission reduction, would be greatly appreciated.