As more architects and interior designers make acoustic attenuation a regular part of the building design process, sound absorption tends to get all the focus. However, absorption is not always the goal. Performance spaces, lecture halls, recording studios, and other commercial applications often require more sophisticated acoustic management.
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Acoustic issues as to the richness and functionality of sound in a space manifest themselves in many ways, and from many different causes.
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While many design options exist (e.g. baffles, banners, islands, and clouds), the use of NRC rating as a performance metric does not. The sound-absorbing performance of these individual, hanging acoustic objects is not quantified using NRC. Instead, their absorption is characterized using sabins, the unit of sound absorption.
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