Suppose we have an insulated and nicely decoupled a room in room construction. The walls of the outher room are build up of stone and the inner room walls (room in room box) are gypsum board on studs. What dimensions do we need to use to calculate room modes? The outher room or inner room dimensions?
what dimensions to use to calculate room modes?
Originally posted at johnlsayers.com, topic 13041.
Inner. Ratios are always calculated from the inner surface of the finished inner-leaf, prior to installing any kind of acoustic treatment. - Stuart -The outher room or inner room dimensions?
to make it easier: they're calculated between "hard" surfaces. so yes, your innerleave is the hard surface.