ANSI/ASA S12.55:2012 (R2023)

ANSI/ASA S12.55:2012 (R2023)

American National Standard Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision methods for anechoic and hemi-anechoic rooms

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Details

This American National Standard specifies methods for measuring the sound pressure levels on a
measurement surface enveloping a noise source (machinery or equipment) in an anechoic room or a
hemi-anechoic room. The sound power level (or, in the case of impulsive or transient noise emission,
the sound energy level) produced by the noise source, in frequency bands of width one-third octave or
with frequency weighting A applied, is calculated using those measurements, including corrections to
allow for any differences between the meteorological conditions at the time and place of the test and
those corresponding to a reference characteristic acoustic impedance.

Additional Info

Author Acoustical Society of America (ASA)
Published by ASA
Document type Standard
Theme /subgroups/2399
Confirmation date 2023-01-01
Number of pages 88
Replace ASA S12.55-2006 / ISO 3745:2003
Keyword ASA S12.55-2012 / ISO 3745:2012 (R2019)
ANSI Approved