At 02:55 AM 9/18/2002 -0600, Mark J Bradakis wrote:
>Right now there is just a sheet of plywood between the compressor and
>one of the work benches. What would be a good material to put on the
>compressor side of the plywood to help cut down on noise - standard
>fiberglass mat insulation, or rigid foam board or open cell foam sheets
>or ???
The insulation absorbs noise but an air gap prevents transmission.
In a standard stud wall faced on both sides with sheet rock, the
stud transmits sound from one side to the other.
One technique to stop transmission in a sheet rock/stud wall is to
frame with twice the number of studs. The studs are offset to
create the air gap.
Instead of sheet rock on both faces of a stud, you attach the sheet rock
on one face of a set of studs, and the other face is attached to the
extra set of studs.
Don't know if this applies to a small enclosure, but I hope you get
the idea.
Oh yeah, and the enclosure has to be tight. Sound gets through
small holes. I heard this discussed on the Lotus Europa list. Even
a cable going though a firewall without a tight seal lets a lot of noise
through.
Steve Shipley
Seattle, WA.
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