ASME PTC 36-2004 (R2013)

This Code provides measurement procedures in a variety of acoustical environments, including outdoor settings influenced by background noise. Generally, sound pressure levels and/or sound power levels in prescribed frequency bands are used to quantify the sound emission of industrial equipment and facilities. Sound pressure level measurements or sound intensity measurements obtained using the procedures of this Code may be used to calculate sound power level. The Code also includes supplementary information on (a) Background noise and distance corrections for far-field measurements; (b) Guidance on the use of sound-intensity methodology; and (c) General guidance for sound-level measurements.