[Scott Dorsey]

Terry C wrote:
I've been checking into ways to bolster sound-proofing in an existing
wall, and it occurred to me that the recording gurus on r.a.p. may
have experience doing this.

Basically, it's one large, long wall that was built by artists in an
NYC loft, so it's probably standard cheap sheetrock over studs. The
current wall is acoustically transparent, even to mid and high
frequencies.

Is there any effective way to provide better soundproofing by
installing a second layer of sheetrock with better sound blocking
qualities?

Walls don't really block sounds, they just diffract them. Adding more and
more mass by putting sheetrock on will reduce high frequencies by making the
wall heavier and more rigid so that sound does not make it vibrate so much.
However, this doesn't do much at low frequencies until you start getting into
very very thick concrete.

At low frequencies the solution is to float a room inside the room, which
is expensive but remarkably effective.

May I recommend the F. Alton Everest book on small studio acoustics?
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."