ABSTRACT
The main means by which we achieve the necessary sound isolation in recording rooms is by
reflexion, because absorption, as a means of isolation, is rather disastrously inefficient. In
typical isolation shells, the sounds produced within the rooms are reflected back from the
boundaries, and thus contained within the space. Sounds emanating from without the room are
similarly reflected back whence they came, and thus little sound can penetrate the isolation
barrier from one side or the other.
