Thanks, y'all. I'm so fricken glad to be nearly done.
Soundproofing is applicable for two things; keeping sound in (so as to not disturb housemates, neighbors, etc), and keeping sound out (so as to not record unwanted sounds, ie., a lawnmower, dogs barking, trucks rumbling by). This room is in the basement, so to speak, with two of the walls (where the console is; and where the guitars are) almost totally underground. The wall that the couch sits on is a wall I built about three feet out from the existing concrete block outside wall. It faces off the side of the mountain over my 1 acre and beyond that; wilderness. The fourth wall is an interior wall with the rest of the basement on the other side. So as it turns out; I didn't need to add any soundproofing at all. It's all physical layout; and situation (I'm single and live alone- no one to bother upstairs; or to record their footsteps). I can beat the hell outta those drums much harder and louder than I ever actually would; and it's barely audible upstairs. My neighbors are each well over 1/3 of an acre away, so they'd never heard anything.
Now; I'm assuming you meant "sound proofing"; which is the above. If you meant "sound
treatment"; such as what am I putting on the walls (
Auralex foam, for example); well, most of the sound treament is actually physical layout as well. None of the walls, floor, ceiling, surfaces are parallel; thereby addressing some of the room comb filtering issues (standing waves, dead spots, etc). I've even built in a diffuser in the ceiling over the mix postion. The ceiling over the couch area may look flat; but it's actually convex to keep from being parallel to the floor (and to be able to sheetrock over the drain from the washing machine upstairs! lol). Beyond that, I have thick rugs on the floor (yep; those are 1k and 2k $$ rugs there- compliments of The Greenville News
), and anything I find I'm needing to address on the walls I'll address with Auralex foam, most likely. That should actually be a rather slight adjustment. Contrary to popular belief; recording in a totally dead room is not really desirable, except for something such as vocals. You dont want it to sound unreal; you want it to sound natural - like they're all there together in the same room playing. So it needs to sound like a real room. The best way to do that is to have a ...real room, lol.
**edit- drums are another issue, however. I have another room to put those drums in; but it's not finished yet. They wont actually be in there when I record a band, for example.