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ANSI S12.34-1988 (R1997)被替代
Engineering Methods For The Determination Of Sound Power Levels Of Noise Sources For Essentially Free-Field Conditions Over A Reflecting Plane
出版：Acoustical Society of America
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基本信息
標(biāo)準(zhǔn)編號： ANSI S12.34-1988 (R1997)
標(biāo)準(zhǔn)類別：Standard
出版單位：Acoustical Society of America
標(biāo)準(zhǔn)頁數(shù)：40
標(biāo)準(zhǔn)簡介
Describes engineering procedures to measure sound pressure levels for calculation of octave or one-third octave band and A-weighted sound power levels. Deals with the specification of the basic acoustical requirements for the measurement of noise under free field conditions over a reflecting plane. Coverage includes: the microphone and its associated cable, frequency response of the instrumentation system; weighting network, frequency analyser; calculation of surface sound pressure level; directivity index and directivity factor.
標(biāo)準(zhǔn)備注
Revision of ANSI S1.34-1980
本標(biāo)準(zhǔn)替代的舊標(biāo)準(zhǔn)
替代本標(biāo)準(zhǔn)的新標(biāo)準(zhǔn)
