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混响时间计算表项目名称:103590.161āSāāSāāSāāSāāSāāSā顶棚扩散体薄板共振吸声结构775.10.292250.177.50.0538.80.04310.0754.30.0969.76顶棚后调节面薄板共振吸声结构1000.29290.1100.0550.0440.0770.099穿孔板吸声结构66.70.51340.6543.40.63420.5335.40.2818.70.149.338顶棚后斜面薄板共振吸声结构30.10.298.730.13.010.051.510.041.20.072.110.092.709楼座下顶棚薄板共振吸声结构255.40.2974.10.125.50.0512.80.0410.20.0717.90.0922.99侧面扩散体薄板共振吸声结构398.60.261040.1351.80.0831.90.0623.90.0623.90.0623.92侧墙面常用材料371.20.013.710.013.710.013.710.027.420.027.420.027.424侧后斜面声博士材料29.20.4914.31.0229.80.926.30.6719.60.4513.10.4312.56楼座后墙声博士材料63.30.4830.41.0163.90.8956.30.79500.5736.10.5031.65无机纤维多孔材料63.30.021.270.2817.70.850.60.9570.531.70.5031.65地座后墙声博士材料200.489.61.0120.20.8917.80.7915.80.5711.40.5010无机纤维多孔材料28.50.020.570.287.980.822.80.925.70.514.30.5014.25地座后斜面无机纤维多孔材料38.20.622.90.830.60.8532.50.9937.80.830.60.6022.92舞台木地板常用材料119.10.1517.90.111.90.111.90.078.340.067.150.078.337地面常用材料283.90.012.840.012.840.012.840.025.680.025.680.025.678挑台内侧常用材料26.70.010.270.010.270.020.530.020.530.020.530.030.801挑台外侧薄板共振吸声结构50.50.2613.10.136.570.084.040.063.030.063.030.063.03舞台口常用材料196.80.3590.3590.478.70.478.70.598.40.5098.4空调回风口常用材料60.84.80.84.80.84.80.84.80.84.80.804.8顶音箱口常用材料90.10.90.21.80.32.70.353.150.292.610.312.79侧音箱口常用材料20.10.20.20.40.30.60.350.70.290.580.310.62耳光口常用材料180.11.80.152.70.23.60.223.960.254.50.305.4面光口常用材料360.2590.414.40.5180.5519.80.621.60.6021.6侧木门常用材料17.80.162.850.152.670.11.780.11.780.11.780.101.78地后木门常用材料15.20.162.430.152.280.11.520.11.520.11.520.101.52观众其他物体14000.182520.344760.385320.375180.425880.52728观众面积修正-5283892某文化中心大剧场位置容积m³室内表面积m²3892.3满场观众数1400类别各材料名称面积m²吸音系数和吸音单位m²125Hz250Hz500Hz1000Hz2000Hz4000Hz35/15木格栅,后空20mmmm填玻璃棉石膏板厚12.5mm龙骨50mm×100mm中心间距(空)400mm石膏板厚12.5mm龙骨50mm×100mm中心间距(空)400mmGRG板4mm厚，穿孔板，穿孔率3.14%,孔径3mm后附吸声毡，50mm玻璃棉，后空腔346mm石膏板厚12.5mm龙骨50mm×100mm中心间距(空)400mm石膏板厚12.5mm龙骨50mm×100mm中心间距(空)400mm石膏板厚9-12mm空45mm水磨石、贴墙瓷板槽孔吸声板SBX-14/2(50mm厚32kg/m3玻璃棉+50mm空腔)槽孔吸声板SBX-13/3(50mm厚32kg/m3玻璃棉+50mm空腔)35/15木格栅,后空20mmmm填玻璃棉槽孔吸声板SBX-13/3(50mm厚32kg/m3玻璃棉+50mm空腔)木门35/15木格栅,后空400mmmm填50mm玻璃棉混凝土上木龙骨木地板光面大理石、花岗石混凝土水泥砂浆抹光石膏板厚9-12mm空45mm舞台开口送、回风口通风口、孔通风口、孔灯光口（内部具反射性）灯光口（内部具吸音性）木门剧场座椅（毛面织物）空椅室内表面积(m²)空气中声衰减系数4mv92.1951271.4058∑Sā924.108970.7971005.021968.9331008.5171150.914室内平均吸音系数ā0.240.250.260.250.260.300.35混响时间T60(s)1.581.491.431.501.321.02-ln(1-ā)0.270.290.300.290.30☆吸声量和混响时间的计算根据混响时间T60的计算公式：T60=0.161V/（－Sln(1－α)+4mV）室内平均吸声系数：α=（∑Siαi+∑Njαj）/S 吸声量A=∑Siαi=Sα混响时间计算表Si——室内各部分的表面积，m²；αi——与表面Si对应的吸声系数；式中：V——房间容积，m³；S——室内总表面积，m²；α——室内平均吸声系数；m——空气中声衰减系数（M－1）；Nj——人或物体的数量，m²；αj——与Nj对应的吸声系数。室内背景噪声限值≤NR－35