2T Audiences CarpetsCeilings Chairs Curtains DoorsFloorsMiscNoneRPGWallsWindows AA_READMELD ,XG338Absorption per ASTM C423-90a. Scattering per ISO WG 25.RPG Diffusor Systems, Inc.ABFFUSOR_ALDh>A؄Fabric wrapped fiberglass RPG with soft board dividers (A MOUNT)RPG Diffusor Systems, Inc.ABFFUSOR_ELD4fh>0EFabric wrapped fiberglass RPG with soft board dividers (E-400 MOUNT)RPG Diffusor Systems, Inc.ABFLECTORLD,rs33|4\1" fabric wrapped angled fiberglass panel (A Mount)RPG Diffusor Systems, Inc.ABSORBOR_1LDP,d,,,,85Ȃ31" fabric wrapped 6 pcf fiberglass panel (A MOUNT)RPG Diffusor Systems, Inc,ABSORBOR_2LD`d,,,,35$#2" fabric wrapped fiberglass panelRPGAUDIENCE40RL3XpR,Xe>C x@h Floor with audience, orchestra and choir, including small ailes[Petersen]AUDIENCE50RL3RR,Xo?C  Ԁ100% occupied upholstered seats[Bies_Hansen]AUDIENCE51RL3Xz4D,X|LW H*4Unoccupied average well upholstered seats[Bies_Hansen]AUDIENCE52RL3DbDT,Xpy -Unoccupied leather-covered upholstered seats[Bies_Hansen]AUDIENCE70RL3 f ,XD? 0~ Seated audience on wooden chairs, ca. 2 pers/m2[Kuttruff]AUDIENCE71RL30* ,XlQ `~0P~ Seated audience on wooden chairs, ca. 1 pers/m2[Kuttruff]AUDIENCE72RL34f ,XU>@ }=} Audience on moderatelly upholstered chairs (0.85 m x 0.63 m)[Kuttruff]AUDIENCE73RL3&\>ffH*,X_IC }=| Audience on moderatelly upholstered chairs (0.90 m x 0.55 m)[Kuttruff]AUDIENCE74RL3XpR,Xe>C H|F8| Average occupoed audience, orchestra and chorus areas (max 1 m ailes)[Kuttruff]AUDIENCE_072L3dv,Xz[ {{ Audience area, 0.72 persons/m2[Karlen]AUDIENCE_104L3"& p\,Xd? ({{ Audience area, 1.04 persons/m2[Karlen]AUDIENCE_152L3|,XL3 zz Audience area, 1.52 persons/m2[Karlen]AUDIENCE_200L3f,X<3 zy Audience area, 2.0 persons/m2[Karlen]AUD_UPH_HEAVY3>pzfR,XQBA Xy@Hy 100% occupied heavily upholstered concert hall chairs, average.[Beranek]AUD_UPH_LIGHT30>\\\\,XlOG x@x 100% occupied lightly upholstered concert hall chairs, average.[Beranek]AUD_UPH_MEDT34R\\\\,X^KG w?w 100% occupied medium upholstered concert hall chairs, average.[Beranek]BADPANEL_1LD\>X&d,:^Hw?(w1" fabric wrapped fiberglass panel with BAD template (A MOUNT)RPG Diffusor Systems, Inc.BADPANEL_1ED>X&d,v@hv1" fabric wrapped fiberglass panel with BAD template (E MOUNT).RPG Diffusor Systems, Inc.BADPANEL_2D4>:d,@u?u2" fabric wrapped fiberglass panel with BAD template (A MOUNT)RPG Diffusor Systems, Inc.BADPANEL_3Db>&d,u@t3" fabric wrapped fiberglass panel with BAD template (A MOUNT).RPG Diffusor Systems, Inc.BADPANEL_4D>l&d,Ht@(t4" fabric wrapped fiberglass panel with BAD template (A MOUNT).RPG Diffusor Systems, Inc.BOARD_ONJOIST3dddddd,Xss Board on joist floor[Beranek]BRICK50JOIST3(2<F,X s2rHard surfaces (brick walls, plaster, hard floats)[Bies_Hansen]BRICKS40OIST3PP^,Xhr.Xr Brick wall, tooled rough mortar (12 mm depth)[Petersen]BRICKS41OIST3 &,X]ilq7q 55 mm thick with 33 holes/brick, 70 mm air, 50 mm wool[Petersen]BRICK_PLASTERED (2<,XC XeDeWooden chairs, 100% occupied[Bies_Hansen]CHAIRS51TER0D,X}`b ddWooden chairs, 75% occupied[Bies_Hansen]CHAIRS70TER0>f,X_I d<d Unoccupied moderatelly upholstered chairs (0.90 m x 0.55 m)[Kuttruff]CHAIRS71TER p4D,XsJW LcY````````oh pY/`Y Cotton (500 g/m2), 75% cover, 130 mm from wall[Petersen]CURTAIN_PLUSH50````````?9 XXPlush curtain, deeply folded[Bies_Hansen]DBLOX_PBER_400b^^ :EWIWDiffusor Block, Non-Slotted, Painted, (A MOUNT) paint is a pore sealant.RPG Diffusor Systems, Inc.DBLOX_SBER_400>f  ^ :EV/VDiffusor Block, Slotted, Unpainted, (A MOUNT).RPG Diffusor Systems, Inc.DBLOX_SPER_400>^^ :E(VEVDiffusor Block, Slotted, Painted, (A MOUNT) paint is a pore sealant.RPG Diffusor Systems, Inc.DBLOX_S_UUSH50*f  ,: *UUSlotted, UnfinishedNoneDIFFRACTAL_400J R  T1TDiffractal Diffusor, 2nd Order Fractal (A MOUNT)RPG Diffusor Systems, Inc.DIFFRACTAL_300J4\zf(TITDiffractal Diffusor, 3rd Order Fractal (A MOUNT) Built as a Fractal WallRPG Diffusor Systems, Inc.FIBERGLASS5050R,: *V3xS0dS25 mm fiberglass or Rockwool (60 kg/m3) typical[Bies_Hansen]FIBERGLASS5150>,: *y33R0R50 mm fiberglass or Rockwool (60 kg/m3) typical[Bies_Hansen]FIBRERIGIDBACKP@f ,: *GKDRR"Fibre against rigid backingLawrence: Architectural AcousticsFIBRE_FISS10KP@f ,: *GKQ2xQ Fissured mineral fibre tile against rigid backing[Lawrence]FIBRE_FISS11K:4>,: *}aFP2P Fissured mineral fibre tile over 410 mm air space[Lawrence]FIBRE_PERF1Kd\l|,: *MZ4P>$P Perforated mineral fibre tile on battens over 20 mm air space[Lawrence]FLATFFUSOR300\>X&d,:^O?dO1" fabric wrapped fiberglass panel with BAD template (A MOUNT)RPG Diffusor Systems, Inc.FLUTTERFREE00xddddd",XXN.NFlutterFree, No Slit, Non Slotted, (A MOUNT).RPG Diffusor Systems, Inc.FLUTTERFREE_HH1T",XXNDMFlutterFree, Helmholtz Mount 1/16" Slit, 1" cavity w/ 6pcf f/glass.RPG Diffusor Systems, Inc.FLUTTERFREE_HH3l",XXHMF(MFlutterFree, Helmholtz Mount 1/16" Slit, 3.5" cavity w/ 6pcf f/glass.RPG Diffusor Systems, Inc.FLUTTERFREE_SL1d|b^",XXL3tLFlutterFree, Slotted, 1" cavity with 6pcf f/glass.RPG Diffusor Systems, Inc.FLUTTERFREE_SL3 l",XXK5KFlutterFree, Slotted, 3.5" cavity with 6pcf f/glass.RPG Diffusor Systems, Inc.FOAM50ERF1KP&R&,: *lP0K)KPolyurethane foam, 27 kg/m3, 15 mm thick[Bies_Hansen]FOAMPLASTIC1Kd4,: *eAJJ Porous foamplastic 50 mm[Karlen]FOAMPLASTIC2KF^R ,: *z=JJ Porous foamplastic 20 mm[Karlen]FORMEDFFUSORL3Jr\XIJ8I2'x 2' x 4" deep lay-in Ceiling or Wall Diffusor, Kydex plastic (E MOUNT)RPG Diffusor Systems, Inc.GLASS_HEAVYK<(dddx H H Heavy glass[Beranek]GLASS_HEAVY50<(,: * HH4HGlass, heavy plate[Bies_Hansen]GRAVEL1AVY50X R,: *dTGG Gravel, 100 mm thickness[Karlen]GYPSUM_DBL50xdZ2 ````````$G#G Gypsum board, 2 layers total 32 mm[Beranek]HARDBOARDS10,dP<(````````|F7lF Hardboard or plywood on battens fixed to solid backing[Lawrence]HARDSURF700(2<F````````E?E Hard surfaces average (brick walls, plaster, hard floors etc.)[Kuttruff]LINOLEUM10((((````````f````````^C 0? ? 25 mm thick, against ceiling[Karlen]MINERALWOOL20pf````````<6 >> 50 mm thick, against ceiling[Karlen]MINERALWOOL3D>````````j79 >> 100 mm thick, against ceiling[Karlen]MINERALWOOL4 ````````Z< |=!l= 25 mm thick, 200 mm from ceiling[Karlen]MINERALWOOL5v>````````vA5 <!< 50 mm thick, 200 mm from ceiling[Karlen]MINERALWOOL6z````````u<5 T<"D< 100 mm thick, 200 mm from ceiling[Karlen]MINERALWOOL7v>@````````6Y;7; 50 mm thick, directly against wall, w. 0.05 mm PE-foil[Karlen]MINERAL_WOOLRf\RH````````UF ;0: 25 mm mineral wool (70 kg/m3) glued to concrete[Petersen]MOD875FUSORL3Jhff:`:MOD-875 Diffusor (A MOUNT).RPG Diffusor Systems, IncNEEDLEFELTL(Fb````````Ǹ969 5 mm needlefelt (stiff/dense pile carpet) on concrete[Petersen]NEEDLEFELT12P,^````````¦@909 Needle-felt on concrete[Karlen]OMNIFFUSORRL3xZxxxdz\88Omniffusor FRG (A MOUNT)RPG Diffusor Systems, Inc.PANEL1ELT1@x< ````````767 Panel w. slot= 0 mm, on 25 mm studs with mineral wool[Karlen]PANEL2ELT1Z,x<2(````````T76D7 Panel w. slot= 1 mm, on 25 mm studs with mineral wool[Karlen]PANEL3ELT1ZZF2````````666 Panel w. slot= 2 mm, on 25 mm studs with mineral wool[Karlen]PANEL4ELT1P:````````v665 Panel w. slot= 4 mm, on 25 mm studs with mineral wool[Karlen]PANEL5ELT1ZXX^,````````W\56L5 Panel w. slot= 8 mm, on 25 mm studs with mineral wool[Karlen]PANEL6ELT1f,````````S474 Panel w. slot= 16 mm, on 25 mm studs with mineral wool[Karlen]PANEL7ELT1<>&r````````Di 473 Panel w. slot= 49 mm, on 25 mm studs with mineral wool[Karlen]PANEL8ELT1D````````I[d38T3 Panel w. slot= 102 mm, on 25 mm studs with mineral wool[Karlen]PANEL9ELT1JzRb````````OO282 Panel w. slot= 270 mm, on 25 mm studs with mineral wool[Karlen]PARQUET301((F<<FPZ````````02 2 Wood parquet on concrete[Beranek]PARQUET401((F<<FPZ````````11 Parquet in asphalt on concrete[Petersen]PEWS50401:b\\*,XqPC 11Wooden pews, 100% occupied[Bies_Hansen]PLASTER11xdP<<<<<,X0 0 Plaster wall[Karlen]PLASTER101dP( ,X /;/ Plasterboard ceiling on battens with large air space above[Lawrence]PLASTER21"d2(FZn,XT/D/ 13 mm plaster on 100 mm studs[Karlen]PLASTER31FP2<FP,X./. 13 mm plaster on 25 mm studs (no mineral wool)[Karlen]PLASTER301d<2( ,X(.. 30 mm plaster on metal lath[Beranek]PLASTER41dF(Fd,X-1t- 13 mm plaster on 25 mm studs (with mineral wool)[Karlen]PLASTER51F<(Px,X,0, 9 mm plaster on 25 mm studs (with mineral wool)[Karlen]PLASTER61P<2<FP,XD,.4, 9 mm plaster on 25 mm studs (no mineral wool)[Karlen]PLASTER71&",XI+F|+ Slotted 13 mm gypsumboard (12%) 106 x 3 mm2 on studs and mineral wool[Karlen]PLASTER81@"P ,XI*B* Perf. 13 mm gypsumboard (11%), d= 5 mm, on studs and mineral wool[Karlen]PLASTER91&X\,XXP (*=* Perf. 27 mm gypsumboard (16%), d= 4.5 mm 300 mm from ceiling[Karlen]PLASTERED1 (<P,X),|) Plastered brick or concrete wall, unpainted[Petersen]PLASTER_AC50P,X ,Xh(5(Acoustic plaster, 10 mm thick, sprayed on solid wall[Bies_Hansen]PLATFORM500,d2 ,XH('4(Wood platform with large space beneath[Bies_Hansen]PLYWOOD500,dP<(@T'*'"Plywood on battens fixed to solid backingLawrence: Architectural AcousticsPLYWOOD_THINdP<<<<,X'& Thin plywood paneling[Beranek]QRD734SORRL3J@XpR |&\&QRD-734 Diffusor (A MOUNT).RPG Diffusor Systems, IncQRD734FORRL36@6,,,@XpR %B%QRD-734 Diffusor (A MOUNT) with fabric 2" from the face of wells.RPG Diffusor Systems, Inc.RESIDUAL30RxdZPF<2<p$.p$ Average total residual absorption of 15 halls[Beranek]RUBBER_FLOOR((Pxdddd<pƽ## 5 mm rubber carpet on concrete[Karlen]SAND1DIFFUSOR^& ,: *d"" Sand, 100 mm thickness[Karlen]SKYLINEFFUSORxd<xddX  l"L"2'x2' skylineRPG DIFFUSOR SYSTEMS INC.SOUNDBOARD1OR<Z^0XddX y!7! 30 mm "Soundboard" (pressed wood curles with air gaps)[Karlen]SOUNDBOARD2ORdvddX w !7  50 mm "Soundboard" (pressed wood curles with air gaps)[Karlen]SOUNDBOARD3OR ddX {hd 7T  70 mm "Soundboard" (pressed wood curles with air gaps)[Karlen]SOUNDBOARD4OR4ddX }X8 100 mm "Soundboard" (pressed wood curles with air gaps)[Karlen]SOUNDBOARD5ORRddX XD 8 150 mm "Soundboard" (pressed wood curles with air gaps)[Karlen]SOUNDBOARD6ORP&bN:&ddX o \FL 50 mm "Soundboard" (pressed wood curles with air gaps) on 25 mm studs[Karlen]TAPESTRY80OR\H4  ddX TL !Tapestries 50 mm from rigid wall[Cremer_Mueller]TILE_FLOORORddX <, Tiles on concrete[Karlen]TIMBERFLOORORnnxndP<(ddX "Timber floor on timber jointsLawrence: Architectural AcousticsTIMBER_FLOORRnnxndP<(ddX  Timber floor on timber joists[Lawrence]TOPAK12_4M_CMEl vddddddddֈ X:<Topakustik 12/4M C-50 mount (12%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK12_4M_EME,zHvDddddddddֈ ;Topakustik 12/4M E-200 mount (12%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK13_3M_CMENdddddddd :Topakustik 13/3M C-50 mount (12%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK13_3M_EMET4Xdddddddd 0;Topakustik 13/3M E-200 mount (12%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK13_3T_CME,dddddddd 4dTopakustik 13/3T C-50 mount (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK13_3T_EME&,dddddddd 5Topakustik 13/3T E-200 mount (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK14_2M_CMEbX^dddddddd 9Topakustik 14/2M C-50 mount (7%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK14_2M_EMEff>X,dddddddd \:@Topakustik 14/2M E-200 mount (7%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK28_4M_CMEz^"dddddddd ;Topakustik 28/4M C-50 mount (7.5%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK28_4M_EMEr6dddddddd <Topakustik 28/4M E-200 mount (7.5%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK4_4M_C2MEZ4ldddddddd 49Topakustik 4/4M C-50 mount (25%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK4_4M_E2MEJ Hdddddddd |:`Topakustik 4/4M E-200 mount (25%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK5_3M_C2MEbRdddddddd 9Topakustik 5/3M C-50 mount (12%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK5_3M_E2ME6 ldddddddd :Topakustik 5/3M E-200 mount (12%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK5_3T_C2MEx:r6dddddddd \3@Topakustik 5/3T C-50 mount (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK5_3T_E2ME&dddddddd 4Topakustik 5/3T E-200 mount (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK6_2M_C2MEf\ dddddddd 8Topakustik 6/2M C-50 mount (7%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK6_2M_E2MEFT@dddddddd @9$Topakustik 6/2M E-200 mount (7%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK6_2T_C2ME ,dddddddd 3tTopakustik 6/2T C-50 mount (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK6_2T_E2ME,J"dddddddd 4 Topakustik 6/2T E-200 mount (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK9_2M_C2MENdddddddd , 8 Topakustik 9/2M C-50 mount (6%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPAK9_2M_E2MEJpNdddddddd t 9X Topakustik 9/2M E-200 mount (6%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPERC20_8_C_CndVdddddddd 1 Topperfo Clou C-50 mount (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPERC20_8_E_Cn<+dddddddd  2 Topperfo Clou E-200 mount (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPERM16_6_C_Cn|,dddddddd \ <@ Topperfo-M 16/16/6 C-50 mount (11%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPERM16_6_E_C|,dddddddd = Topperfo-M 16/16/6 E-200 mount (11%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPERM20_8_C_CXz&r,dddddddd <Topperfo-M 20/20/8 C-50 mount (13%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPERM20_8_E_C| &Tdddddddd ,=Topperfo-M 20/20/8 E-200 mount (13%) (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPERT16_12_3_C@Ndddddddd t9XTopperfo-T 16/16/12-3 C-50 mount (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPERT16_12_3_Efrdddddddd :Topperfo-T 16/16/12-3 E-200 mount (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPERT16_12_5_CNJdddddddd 9Topperfo-T 16/16/12-5 C-50 mount (w/ 30 mm mineral wool)RPG Diffusor SystemsTOPERT16_12_5_E|\"dddddddd L:0Topperfo-T 16/16/12-5 E-200 mount (w/ 30 mm mineral wool)RPG Diffusor SystemsUPHOLST_HEAVR>H>,XWKO 2 Heavily upholstered concert hall chairs, average.[Beranek]UPHOLST_LIGHT^:bN&,Xqt 2 Lightly upholstered concert hall chairs, average.[Beranek]UPHOLST_MEDT0l0,Xo^h T1D Medium upholstered concert hall chairs, average.[Beranek]VARISCREENT>XrbJ?6^!non absorptive - diffusive siteRPG DIFFUSOR SYSTEMS INC.VARISCREENABSzB63 absorptive non diffusive siteRPG DIFFUSOR SYSTEMS INC.VELOUR_HEAVY^&X&jd p-\Medium velour, 18 oz/yd2, draped to 50% area[Bies_Hansen]VELOUR_LIGHT(n^:Ƿ Light velour, 10 oz/yd2, hung[Bies_Hansen]VELOUR_MEDIUMF6Xlh 8-$Medium velour, 14 oz/yd2, draped to 50% area[Bies_Hansen]VIBRATING50MdF2((2<F2|Slightly vibrating walls (suspened ceilings etc.)[Bies_Hansen]VIBRATING51MxF2222<Strongly vibrating walls (wooden panel. over airspace etc.)[Bies_Hansen]VIBRATING70MdF2((2<F82( Slightly vibrating walls (suspened ceilings etc.)[Kuttruff]VIBRATING71MxF2222@x Strongly vibrating walls (e.g. wooden panelling over air space)[Kuttruff]VIBRATING80MrP<PdxBVibrating gypsum plasterboards, 50 mm wool in front of rigid wall[Cremer_Mueller]WALL_LIGHTMd<((2<F$6 Light 2x13 mm gypsum, 50 mm distance w. wool, painted[Petersen]WATER_SURF50 (2Water (surface of pool)[Bies_Hansen]WATER_SURFACE (2 Water surface[Karlen]WINDOW1RFACE^xF(    Window glass[Karlen]WINDOW10FACEdP<(    Window glass[Lawrence]WINDOW50FACE^xF(  Ordinary window[Bies_Hansen]WINDOWGLASSE@dP<(  "aaLawrence: Architectural AcousticsWINDOW_DBL_10< p"` Double 3 mm glass/ 10 mm distance[Karlen]WINDOW_DBL_302 " Double 3 mm glass/ 30 mm distance[Karlen]WINDOW_THERMOdF22 H#8 Windows with 3-4 mm "thermo" glass[Petersen]WINDOW_THICK<(  Window glass, big thick panes[Karlen]WOOD30THICKZ<<2(, Wood, 25 mm with airspace[Beranek]WOODEN_DOORd<Pdddd½ Massive wooden door[Petersen]WOOD_FLOOR1((F<<FPZ$ Wooden floor in asphalt on concrete[Karlen]WOOD_FLOOR2ndF<FPZ| Wooden floor on joists[Karlen]WOOD_FLOOR40ndF<FPZ! Varnished wooden floor on joists[Petersen]WOOD_FLOOR50xdF<FPZlXVarnished wood joist floor[Bies_Hansen]WOOD_PANEL2xdZPF<2 16 mm wood on 40 mm studs[Karlen]WOOD_PANEL40J6}83( 25x100 mm raw wood panel, 5 mm gaps, on wool 50 mm[Petersen]WOOD_PANEL41ndF2 =x 25x100 mm raw wood panel, 5 mm gaps, AL-paper, on wool 50 mm[Petersen]WOOD_PANEL42DP(2 3 4 mm crossband plywood, 75 mm distance, 25 mm wool[Petersen]WOOD_PANEL43Ji~ S 4 mm crossband plywood, d=4 mm holes, cc 10 mm, 75 mm distance, 25 mm mineral wool[Petersen]WOOD_PODIUM,d2  Hollow wooden podium[Karlen]WOOD_VENEER1Zdnx  8 mm wood veneer on 50 mm studs[Karlen]WOOD_VENEER2ZxndZx h 3 mm wood veneer on 50 mm studs[Karlen]WOOD_WALL80nF ((P-PThick wood-chip board in from of air cushion[Cremer_Mueller]