Journal Article
Physical and Perceptual Comparison of Real and Focused Sound Sources in a Concert Hall
Journal of the Audio Engineering Society · Volume 64 · Issue 12 · pp. 1014–1025 · December 2016
Abstract
Concert hall acoustics have been traditionally evaluated by means of room acoustic measurements and perceptual studies, which requires an available concert hall, orchestra, and audience. This article presents a physical and perceptual comparison of room acoustics between arrays of real loudspeakers and virtual loudspeakers implemented with Wave Field Synthesis in a concert hall. The physical comparison comprises time-frequency and spatiotemporal analyses of the spatial room impulse responses measured through the two reproduction methods. Perceptual comparisons are based on formal listening tests performed both in-situ and in laboratory conditions, using anechoic classical music recordings as excitation signals. The results indicate that Wave Field Synthesis yields a slower build-up and a spatially more distributed direct sound than real loudspeakers. Perceptually, Wave Field Synthesis presents brighter sound and a wider and more enveloping spatial sound image, as well as higher preference in the studied concert hall.
