Historical
ANSI/ASA S1.4-2014/Part 3 / IEC 61672:3-2013
American National Standard Electroacoustics - Sound Level Meters - Part 3: Periodic Tests (a nationally adopted international standard)
ANSI/ASA S1.4-2014/Part 3 / IEC 61672-3:2013 describes procedures for periodic testing of time-weighting, integrating-averaging, and integrating sound level meters that were designed to conform to the class 1 or class 2 specifications of ANSI/ASA S1.4-2014/Part 1 / IEC 61672-1. The aim of the standard is to ensure that periodic testing is performed in a consistent manner by all laboratories
Acoustical Society of America [asa]