Acoustical Performance of Landscaped Office Ceilings

Abstract

Data is presented on a number of ceiling materials and assemblies tested in the open office mockup at the Geiger and Hamme Acoustical Laboratories. The tests include flat ceilings, baffle configurations, three-dimensional ceilings, and lighting troffers. Performance is rated in terms of speech attenuation over a 5-ft high screen, and by subjective listening tests. Relations between attenuation, specular reflection loss, and reverberation room absorption coefficients for flat ceiling materials are discussed.