What Defines a Sound Level Meter in the US has Changed. ANSI/ASA S1.4 equals IEC 61672. Understanding the Differences
What had been previously described as "The Atlantic Divide" in sound level meters (SLM) is gone. With the adoption of ANSI/ASA S1.4 (all three parts) from IEC 61672 (all three parts) in July 2014, the harmonization of the US and European Sound Level Meter standards is complete.
Users of SLMs do not need to be expert in the details. However, a good understanding of the new regulation is needed if measurement results are ever challenged. We will review the new regulation from an end-user's view. Describing what documentation proves that your device is a Class 1 sound
level meter fulfilling ANSI/ASA S1.4 in good working order. has its intended audience from the SLM designer/manufacturer, accreditation body, to the calibration laboratory.
Document Type: Research Article
Affiliations: 1: NTi Audio 2: NTi Audio AG
Publication date: 12 October 2020
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