ANSI/ASA S1.4 Part 2:2014

This part provides details of the tests necessary to verify conformance to all mandatory specifications given in Part 1 for time-weighting, integrating-averaging, and integrating sound level meters. Pattern-evaluation tests apply for each channel of a multi-channel sound level meter as necessary. Tests and test methods are applicable to class 1 and 2 sound level meters. The aim is to ensure that all laboratories use consistent methods to perform pattern-evaluation tests.