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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.
 

Document History

  1. ASA S12.2-2019


    American National Standard for Criteria for Evaluating Room Noise.

    • Most Recent
  2. ASA S12.2-2008

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    American National Standard Criteria for Evaluating Room Noise

    • Historical Version