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The use of Statistical Energy Analysis (SEA) for the prediction of the sound reduction index of double systems with large cavity

Journal Contribution - Journal Article Conference Contribution

Over the last ten years, a high amount of (high-rise) double façades buildings, consisting of two façades with glass and aluminum separated by a large cavity, have been built. The usefulness of acoustic prediction models has become evident, especially at the tendering phase of a project. A double façade combines mostly a double glazing with a single glazing, yielding three different glass panes in the system (figures 1 and 2). Statistical energy analysis (SEA) will be used in this paper to study the transmission of diffuseincidence sound waves through a double system consisting of two independent glass panels, separated by a large air space. The analytical SEA model consists of seven linearly coupled subsystems. Both non-resonant and resonant transmissions for the glass panels are included. The prediction using SEA was compared to the acoustic measurements, which were conducted for this study at the Catholic University of Leuven in Belgium (K.U.Leuven), of sixteen different double façade systems. The agreement with the experimental data revealed to be good to very good.
Journal: Proceedings of the Institute of Acoustics
ISSN: 1478-6095
Issue: PART 3
Volume: 32
Pages: 544 - 563
Publication year:2010