Sound Advice
To the Editor:
The article "Details for Damping
Household Noise" (10/99) was excellent,
but I disagree on a few points. I
would not hang drywall from resilient
channels on a ceiling, even if they
were on 16-inch centers. The channels
are designed to disconnect the drywall
from the framing, so the drywall will
definitely sag. The article also states
that airborne sound can only travel
through air pathways, but sound is
actually transmitted more efficiently
through solid objects.
If you are trying to solve an existing
sound problem, you should first
determine if it is a high-frequency or
low-frequency sound. High-frequency
waves are measured in thousandths of
an inch, have little energy, and can
be effectively controlled by caulking
and