wall soundproofing, part 1
there will be about 3 or 4 different wall situations in the studio design, and i'll need to tackle each one separately. the most solidified one right now is the wall between the main studio and the vocal booth:
this follows the typical mass-air-mass (M-A-M) design for soundproofing which has become the prominent model the past 10 years or so. the wall side in each room is on its own frame to provide maximum decoupling between the rooms. M-A-M dictates that both frames be open-faced, otherwise you'd have mass-air-mass-air-mass-air-mass, which is actually *less* effective, particularly for lower frequencies.
the only change i might make to this plan is to remove the resilient channel in the rooms. it's not really necessary when using 2 open-faced frames like this, at least not for sound transmission between the rooms. the main reason i have it in there is that the frames will be attached to the floor joists above, and this *may* provide a useful decoupling for that. i'm also hoping to add some sort of material between the frame and the joists and the frame and the floor in order to better decouple those connections.
UPDATE: the RC is now gone from this plan. it's not going to offer any real benefit in this scenario and is just another layer of stuff to have to worry about.