High performance audio rooms are so quiet inside and so acoustically fast in response that as the music plays, sounds and tones come and go quickly. When a tone slightly shakes the floating wall, which happens to be the same frequency as the resonance of the supporting stud, the stud is stimulated onto movement. When the musical moment stops, the listener continues to hear an odd sound, the sound of the stud vibrating behind the wall. This kind of sonic afterglow is unacceptable in high performance rooms.
Another circumstance where stud vibration becomes a problem is when the suspended wall is connected to a set of studs that has sheetrock on the other side. This sheetrock and stud wall also has a natural resonance which can be stimulated by the movement of the floating wall. The interior wall vibration can become so great that things attached to the wall will rattle, which even further degrades the results of the sound isolation project.
When freely vibrating studs are used to support a floating wall, either damping or a rigid connection can be used to keep the stud from vibrating. Sometimes it is possible to cross brace the middle of a stud, or to connect it to a nearby concrete wall, and keep it from vibrating. However, frequently the situation is that there is no way to support the free standing stud and damping its free vibration is the only option.
ASC has also developed inertial stabilizers for floor joists. The principles are the same except that a double pendulum system is used, with both being laid horizontal instead of a single unit hanging vertical.
Contact ASC engineering if you have other vibration management applications that might benefit from inertial damping. Inertial damping does not rely on being cross braced to other points in the structure, it depends only upon the acceleration of the point to which it is attached.
Stud Stabilizers have been designed to compliment and enhance the effectiveness or our Iso-Wall System. Use them to remove the resonant characteristics of any un-braced studs or framing in your walls.