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ANSI/ASA S12.2-2019

Criteria for Evaluating Room Noise

This Standard provides three primary methods for evaluating room noise: a survey method that employs the A-weighted sound level; an engineering method that employs expanded noise criteria (NC) curves; and a method for evaluating low-frequency fluctuating noise using room noise criterion (RNC) curves.

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Acoustical Society of America [ASA]


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