So in simpy terms, if a double seperate wall cavity depth is such that it resonates at say 40hz, would it attenuate all frequencies above 40hz and any frequenices below would be heard on the otherside of the wall?
I would suspect that it would all depend on: (a) just exactly what the construction of wall one is; (b) what is inside the cavity; and, (c) more to the point, what the construction and design of wall two is.
Actually, I don't really suspect that, I rather know that plays a very significant role in the overall performance of a low TL structure.
Now, in the interest of courtesy to Mr. KBLAW, perhaps you should start a thread specifically on this topic. Make sense?