Abstract
Acoustical consultants and designers rely on sound data published by manufacturers to make informed design decisions. Even when manufacturers make efforts to communicate these data clearly, acoustical test values can be misinterpreted or misapplied. Nuanced sample mounting methods, specific test system configurations, and variability inherent in laboratory test methods are all factors that can affect test results and how or what data are published in manufacturer literature. Since at least the early 1950s, United States Gypsum (USG) has tested and published sound data for its products and systems. A brief history of USG’s acoustical testing and sound-related publications will be presented, along with examples of variability of results, influencing factors, and how this information is communicated to different audiences.
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