Abstract
Laboratory mockup measurements of interzone attenuation and subjective judgments of speech privacy can be coordinated through the structure of speech-intelligibility theory to evolve a method of ceiling characterization that offers a sensitive scale for performance evaluation with respect to office landscaping. When the results of such characterizations are interpreted in terms of specular reflection losses incurred during interzone transmission, the sufficient conditions for adequate interzone speech privacy beneath flat ceilings can be stated concisely in terms of material properties and the characteristics of a synthetic background-noise distribution system. Certain of the practical ramifications and logical extensions of this treatment of landscape acoustics are also discussed.
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