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Document History

  1. ASA S12.9-2013/Part 1 (R2023)


    American National Standard Qualities and Procedures for Description and Measurement of Environmental Sound - Part 1: Basic Quantities and Definitions

    • Most Recent
  2. ASA S12.9-1988 (R2003)

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    American National Standard Qualities and Procedures for Description and Measurement of Environmental Sound - Part 1

    • Historical Version