I'm building a music studio in my basement, and my goal is to isolate it as much as possible (at reasonable cost) acoustically, both to keep sound from leaking in during recording, and (more importantly) to keep loud instruments (like drums) from seriously bothering the rest of the house.
I already have a rough idea of how to deal with the walls: staggered
2x4 studs on a 2x6 baseplate, so that the outer and inner drywall aren't acoustically coupled via the studs, cavities filled with a heavy insulating material of some kind (suggestions?)The ceiling is another story -- I could imagine suspending some kind of false ceiling slightly below the joists and packing some kind of loose and relatively dense material above that, but what? And how should the false ceiling be constructed and suspended in order to give me the best bang for the buck? Things I ideally want to avoid, by the way, are insulating materials that are flammable or that contain nasty rock or glass fibers. Maybe some kind of flame-retardant cellulose pulp?
Also, there are heater ducts all over the basement ceiling, and it would be nice to figure out a way to keep these from piping sound between the studio and the rest of the house, without actually having to relocate them. I'm guessing that if there is no actual opening from a duct into the studio itself, then packing insulation around a duct will help keep it from transmitting much sound out of the studio. Comments?
Last but not least, cost *is* an object -- I'd rather have 90% sound reduction for $1000 extra than 99% for $5K extra.
thanks,
Grant