scope:

This Technical Report specifies methods for measuring, evaluating and documenting sound pressure levels emitted by a machine or machine production system(s) during normal operation and when running at idle. This technical report provides guidance for measuring and recording machine sound pressure levels that are the most compatible with the actual conditions encountered in industry, and allows the user to select equipment using 'buy-quiet purchase specifications' or to estimate the effect particular machinery will have on existing sound pressure levels once it is installed in the user's facility.

Sound pressure levels emitted by machines or machine production systems is frequently referred to as "noise." This Technical Report considers the terms "Noise" and "Sound" as synonymous.