GOST 31297-2005 Noise Engineering method of determination of sound power levels of multisource industrial plants for evaluation of sound pressure levels in the environment《噪声 环境声压级.pdf

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1、 ISO 8297:1994Acoustics Determination of sound power levelsof multisource industrial plants for evalution of sound pressure levelsin the environment Engineering method(MOD) , ()INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION(ISC)312972005( 8297:1994)62005/82, - 1.092 . - 1.297 .

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6、 Sm,2: , - .3.5 (measurement distance) d,: .3.6 (distance between measurement positions) Dm,:- .3.7 (characteristics height of the plant) H, : .3.8 (equivalent continuous sound pressure level)Leq, ,: , , , T, . Leq T, LTppdteq TtT,lg ,c61c233c235c234c234c249c251c250c250c2421012020 0 , 20 ;t , . 3125

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