Acoustical measurements in lecture halls, theaters, and multi-use rooms

Abstract

A series of monaural and binaural acoustical measurements were taken at several source locations and multiple receiver locations in lecture halls, theaters, and multi-use rooms using the acoustical research instrumentation for architectural spaces (ARIAS) system. The rooms studied included a fire stair, small class rooms, lecture halls, theaters, and large, multi-use auditoria among others. Measurements of reverberation time, early decay time, early to late temporal energy ratios at various time periods, center time, lateral energy fractions, loudness, and interaural cross correlations were made. Reflectograms for locations within each room were also made. Summary graphs showing ranges of each measurement within each of the rooms and discussion of similarities and differences among the groups of rooms will be presented. [Work supported by the National Science Foundation.]