Tough, but you know that obviously
You mean independent ceiling joists as in the article? That's better than clips if you can do this.
Clips on stone = 1 5/8" air cavity. That small air space with clips and drywall will improve your high frequency performance but your low frequency isolation will worsen. I have the data on that if anyone's interested. There are other issues with that air cavity and the resonance point of that stone wall, but that's another post
This is for comfort? Getting the carpet and pad off the concrete?
When these two doors are closed, are they side by side or is there an airlock created?
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