Abstract
In Beraneks evaluation of concert halls, he attributed 40% of the rating to his own discovery initial time delay gap, 30% to factors associated with reverberation time, and 16% to factors associated with loudness. Multipurpose halls following this design philosophy have emphasized the use of clouds to provide early reflections and moveable curtains behind partially open panels to vary the reverberation time at the expense of loudness, side reflections, and bass. Recent listener preference space sludies have attributed 47% of hall preference to factors associated with sound force, and 28% to factors associated with sensation definition and clearness (i.e., side and front reflections). The direction of this research points overwhelmingly to a return to smaller volume halls with strong side reflections even for multipurpose uses.
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