ASA S12.55-2012/Amd.1-2021/ISO 3745:2012/Amd 1:2017
Amendment 1 to American National Standard Acoustics – Determination of sound power levels of noise sources using sound pressure – Precision methods for anechoic and hemi-anechoic rooms
Amendment by American National Standards of the Acoustical Society of America, 09/01/2021