ISO 11203:1995/Amd 1:2020 is an International Standard from the International Organization for Standardization (ISO). It focuses on Acoustics - Noise emitted by machinery and equipment. Specifically, this standard provides a method for measuring and characterizing noise emitted by machinery under standardized conditions. The standard also includes an amendment (Amd 1:2020) that provides updates and clarifications to the original standard, according to the ISO website
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