Audio reproduction quality depends on system qualities as well as on acoustic properties of the room, which can be controlled by appropriate acoustic treatment. Most of rooms not initially intended for audio purposes are shoe-box shaped, what determines their acoustic drawbacks and modal behaviour. The goal of our project was to adapt a 9 x 6 x 3 m shoe box shaped room so that it can be used as a reference listening room. Initially the room was too reverberant for audio purposes and produced intolerable flutter echo. Finally, we obtained Reverberation Time of 0.45 s in 63 Hz third octave band and a nearly flat Reverberation Time curve above 125 Hz, at the value of 0.2 s
http://www.aes.org/e-lib/browse.cfm?elib=21710
