OT: Question on Lesson Studios

[Ron Nossaman]

>  I've been in the construction trades for 30 years and
>only a few times have I ever seen the top and bottom plates split. This is
>because they are nailed solid and any sound transmission is through them and
>not due to the outside surfaces of the wall acting as one unit. It does have
>some effect but when the rest of the wall is built properly it is
>negligible. I think that is the same argument Del and Ron use for not gluing
>the bridge on the soundboard in the crowned position.


I'm not sure where this connects. Splitting a wall with sheetrock attached 
to every other stud from each side works by de-coupling the two sides of 
the wall, so the movement from one side doesn't directly move the other. 
Sound deadening panels do essentially the same thing. The movement of the 
surface picking up sound vibrations is absorbed and dissipated within the 
non-rigid interior of the panel instead of mechanically moving the opposite 
surface along with it. If the perimeter of the wall is anchored in 
something either massive or absorptive, instead of another elastic membrane 
like the wall surface, it shouldn't be a big problem. You lost me on the 
bridge, soundboard analogy. Where's the connection (as it were) there?

Trying to keep up.

Ron N