Craig,
What I said was blankets won’t help with noise abatement. Noise abatement is keeping outside sounds from getting in to your recording. The same is true for foam. If someone’s outside with a lawn mower, blankets or foam won’t stop that.
There are two aspects; noise abatement and acoustical treatment. Using acoustical treatment to try and fix noise abatement problems won’t work.
Blankets and foam are for acoustical treatment.
You need D-I-D (Density-Isolation-Density) to block outside noise. Two walls (or other dense barriers) that are isolated from each other and do not touch each other in any way. e.g. nails and screws.
I floated 1 inch slabs of slate on my window well rims and isolated them from the rims with silicon caulk. I used the same caulk to keep the slabs from touching the exterior wall of the house. So, Density-Isolation-Denisty. It keeps the outside noise from getting in to my studio. It does nothing for in studio acoustics.
Make sense now?
Regards,
Ty Ford
Cow Audio Forum Leader
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