An onsite reverberation chamber tuned with fiberglass panels for the specific acoustical configuration was combined with the first commercial use of a digital delay line, the Lexicon DD1, then fed to the side and overhead speakers.
12.
A "'reverberation chamber "'or "'room "'is a room designed to create a diffuse or random incidence sound field ( i . e . one with a uniform distribution of acoustic energy and random direction of sound incidence over a short time period ).