ANSI/ASA S12.55:2012/AMD 1:2021现行
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)
出版：Acoustical Society of America
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基本信息
标准编号： ANSI/ASA S12.55:2012/AMD 1:2021
标准类别：Amendment
出版单位：Acoustical Society of America
标准页数：0
标准简介
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.
