Sound Suppression Drywall ?

QuietRock works better from a much larger company.

http://www.quietsolution.com

I have used it many times and many of their panels are available at local dealers.

What I tried was putting paneling back ontop over a 1" thick styrofoam insulation to replace paneling on a wall to try to reduce noise from a bathroom to a bedroom. It didn't work.

Glad to hear there is a new product for the application.

What frequencies are needing to abate?

www.acoustiblok.com

They can make it happen, I'll be outta town awhile

Tell more about the "unit" beyond the wall.

Double thich wall board on your side can't hurt...if more furring will be surface mounted on old wall board (in situ) the second air gap will help even more. But. better would be to add acoustic material to the opposite side of the wall...absorbs sound (including some in piping) before it's conducted into and to other side...or to other walls (on your side). If you can gain access to both sides, and get agreement by both parties (you and them or you and you), then mount accoustic material to unliven the wall for both units would probably be better and cheaper than nailing and finishing new boards.

The frequencies envolved are the most forgotten aspect of sound control. The high frequency sounds are easy. Its the lower frequency sounds that travel through most anything. I use to work with an architect. What we did for sound control for next to band rooms was to use an insulated wall with staggered studs and then put offsets in the ventilation system. The material on the walls was some kind of special sound board that had different depths to it to reflect the sound to certain places to keep down the dead spots.

We had this same discussion recently - here:

http://cr4.globalspec.com/thread/34035/Noise-Reducing-Drywall

with a few other tips and suggestions you will find useful.

*don'tcha just love these newfangled "search" functions? ;)