ANSI-S12.12 Complete Document History
American National Standard Engineering Method for the Determination of Sound Power Levels of Noise Sources using Sound Intensity

Complete Current Edition:
   1992 R20 EDITION - REAFFIRMED IN 2020 - June 19, 2020

Obsolete Revision Information:
   1992 R17 EDITION - REAFFIRMED IN 2017 - Sept. 29, 2017
   1992 R12 EDITION - REAFFIRMED IN 2012 - Jan. 1, 2012
   1992 EDITION - Engineering Method for the Determination of Sound Power Leve - Jan. 1, 1992