GOST R 54579-2011 Acoustics Application of new measurement methods in building and room acoustics《声学 建筑物和房间声学新测量方法的应用》.pdf

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6、) S L1= 10lgWChtdt0120ref()c165c242c233c235c234c234c249c251c250c250.(3), - R, L2 (2) h2(t) R L2= 10lgWChtdt0220ref()c165c242c233c235c234c234c249c251c250c250.(4) D - - D = L1 L2= 10lghtdthtdt120220()()c165c165c242c242c233c235c234c234c234c234c234c249c251c250c250c250c250c250.(5)4 545792011 W0 Cref. . - .5.4 - . -, . ( ) , , ., - , . - , , . - . (2) Whtdt020()c165c242=W02c112Hd()c119c1192c45c165c165c242,(6) c119 ,H(c119) , h(t) 5 545792011L ;h ;t Lm(t) - L1(t), L2(t), , LN(t) . L(t) h(t). 2 H(c119)=F h(t) = hte dtjt()c45c45c165c165c242c119,(7) j . (6) , h(t)=0t 0, - () . (6) , . , . (5) (6),