ThePracticalPeasant
Member
I have [a lot] of experience regarding residential building construction [in North America]. Though my experience isn't specific to audio rooms, I can offer plenty of suggestions regarding sound insulation/isolation given specific information about the space.
1) Of the self-installable off-the-shelf insulating materials; mineral fibre > glass fibre > solid/sprayed foam as far as sound insulation goes.
2) don't stack drywall, space it off the substrate. Wall coverings are rigid, they vibrate sound to the next layer (the joists) which vibrate the house. The best possible solution is to use a spacer so the sound waves aren't transferred to the structure.
TLDR: Stand off your finishing materials and stuff the air cavities. Best bang for your buck.
1) Of the self-installable off-the-shelf insulating materials; mineral fibre > glass fibre > solid/sprayed foam as far as sound insulation goes.
2) don't stack drywall, space it off the substrate. Wall coverings are rigid, they vibrate sound to the next layer (the joists) which vibrate the house. The best possible solution is to use a spacer so the sound waves aren't transferred to the structure.
TLDR: Stand off your finishing materials and stuff the air cavities. Best bang for your buck.