ANSI/ASA S12.55:2012/AMD 1:2021
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AMERICAN NATIONAL STANDARD ACOUSTICS - DETERMINATION OF SOUND POWER LEVELS AND SOUND ENERGY LEVELS OF NOISE SOURCES USING SOUND PRESSURE - PRECISION METHODS FOR ANECHOIC ROOMS AND HEMI-ANECHOIC ROOMS (A NATIONALLY ADOPTED INTERNATIONAL STANDARD)
Amendment of
Available format(s)
Hardcopy , PDF
Language(s)
English
Published date
30-08-2021
Publisher
The performance of an anechoic or hemi-anechoic room is tested by comparing the spatial decrease of sound pressure emitted from a test sound source with the decrease of sound pressure that would occur in an ideal free sound field.
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