ENERGY CRITERIA IN ITALIAN HISTORICAL OPERA HOUSES: A SURVEY OVER 11 THEATRES

摘要

Sound energy distribution in enclosed space has been largely investigated both experimentally and theoretically. In this regard, the milestone is represented by the semi-reverberant field theory. Thanks to the availability of a significant set of measurements, Barron and Lee proposed a revision to this theory which could take into account the behavior emerging from the measurements they performed in northern Europe concert halls, a behavior differing from the classical predictions. This work is intended as a preliminary analysis in the definition of a revised theory for sound energy distribution specifically tailored for Italian historical opera houses. In fact, the concave shape of these halls and the early reflection pattern generated by a combination of acoustical/architectural features give rise to a spatial distribution of the early reflected sound field which calls for a customised analysis.