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Sidewalls, ft²

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Floor/Ceiling, ft²

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	ft²	125	250	500	1000	2000	4000
α
Sidewalls
Front/Rear
Floor/Ceiling
Total

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Select an audience type...

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"," ",""," ","
Audience Area Dimensions
Width, ft
Length, ft
Height, ft
Occupancy, %

","

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	ft²	125	250	500	1000	2000	4000
α_UNOCCUPIED
α_INTERPOLATED
α_OCCUPIED
Sidewalls
Front/Rear
Floor/Ceiling
Total

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.text").first().setStyle({opacity:"inherit"});threedb.rt.callbacks.calcRTsCallback()}}},graphs:{objects:{rt:null,fitzroy:null,fitzroyE:null,rtBySabin:null},data:{rt:{goal:[],sabine:[],eyring:[],fitzroy:[],fitzroyE:[],arau:[],kuttruff:[]},rtBySabin:[]}},io:function(){if(data){$("roomName").setValue(data.roomName);$("roomNumber").setValue(data.roomNumber);if(data.units=="M"){window.onload=threedb.rt.callbacks.unitsCallback}$("roomLength").setValue(data.roomLength);$("roomWidth").setValue(data.roomWidth);$("roomHeight").setValue(data.roomHeight);$("rtGoal").setValue(data.rtGoal);$("roomCapacity").setValue(data.roomCapacity);$("modDate").innerHTML=data.modDate;data.rts.each(function(d){if(d.type=="Multiplier"){threedb.rt.freq.each(function(e){$("rtGoalMultiplier"+e).setValue(d["rt"+e])})}else{if(d.type=="Goal"){threedb.rt.freq.each(function(e){$("rtGoal"+e).setValue(d["rt"+e]) })}}});for(var c=0;c"+accounting.formatNumber((a[1]/a[2])*100)+"%"})},showRTGoals:function(){threedb.rt.freq.each(function(b,a){$("rtGoal"+b).setValue(accounting.formatNumber(parseFloat($F("rtGoal"))*parseFloat($F("rtGoalMultiplier"+b)),1))})},calcRTs:function(){threedb.rt.freq.each(function(b,a){threedb.user.data.room.sabine.delta[a]=threedb.user.data.room.sabinGoal(a)-threedb.user.data.room.sabinsSum(a);threedb.user.data.room.eyring.delta[a]=threedb.user.data.room.sabinGoal(a)-threedb.user.data.room.eyringSabins(a);[["sabine","calc","sabinsSum"],["sabine","rt","sabineRT"],["eyring","calc","eyringSabins"],["eyring","rt","eyringRT"]].each(function(c){threedb.user.data.room[c[0]][c[1]][a]=threedb.user.data.room[c[2]](a)=="Infinity"?0:threedb.user.data.room[c[2]](a) });[["fitzroy","rt","lr","fitzroyRTLR"],["fitzroy","rt","fr","fitzroyRTFR"],["fitzroy","rt","fc","fitzroyRTFC"],["fitzroy","rt","sum","fitzroyRT"],["fitzroy","calc","lr","sabinsLR"],["fitzroy","calc","fr","sabinsFR"],["fitzroy","calc","fc","sabinsFC"],["fitzroyE","rt","lr","fitzroyERTLR"],["fitzroyE","rt","fr","fitzroyERTFR"],["fitzroyE","rt","fc","fitzroyERTFC"],["fitzroyE","rt","sum","fitzroyERT"],["fitzroyE","calc","lr","sabinsELR"],["fitzroyE","calc","fr","sabinsEFR"],["fitzroyE","calc","fc","sabinsEFC"],["arau","rt","lr","arauRTLR"],["arau","rt","fr","arauRTFR"],["arau","rt","fc","arauRTFC"],["arau","rt","sum","arauRT"]].each(function(c){threedb.user.data.room[c[0]][c[1]][c[2]][a]=threedb.user.data.room[c[3]](a)=="Infinity"?0:threedb.user.data.room[c[3]](a)})})},showGraphs:function(){$w("goal sabine eyring fitzroy fitzroyE arau kuttruff").each(function(c){threedb.rt.graphs.data.rt[c].clear()});var b=[];threedb.rt.freq.each(function(d,c){b.push(parseFloat($F("rtGoal"+d))||0)});threedb.debug.log("Updating RT Goal in main graph");threedb.rt.graphs.objects.rt.series[0].setData(b);var a=[];[[threedb.user.data.room.sabine.rt,1],[threedb.user.data.room.eyring.rt,2],[threedb.user.data.room.fitzroy.rt.sum,3],[threedb.user.data.room.fitzroyE.rt.sum,4],[threedb.user.data.room.arau.rt.sum,5]].each(function(c){a.clear();threedb.rt.freq.each(function(e,d){a.push(c[0][d]||0)});threedb.debug.log("Updating 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});return true},suggestRT:function(){var 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Math.sqrt(Math.pow(d+b,2)+Math.pow(a-c,2))},difference:function(){if(threedb.barrier.barrier.elevation()<((threedb.barrier.source.distance()/(threedb.barrier.source.distance()+threedb.barrier.receiver.distance()))*(threedb.barrier.receiver.elevation()-threedb.barrier.source.elevation())+threedb.barrier.source.elevation())){$("warning").innerHTML="No obstruction: barrier provides no attenuation";$("pld").innerHTML="0 ft";return 0}else{$("warning").innerHTML="";var a=threedb.barrier.pathLength.barrier()-threedb.barrier.pathLength.direct();$("pld").innerHTML=accounting.formatNumber(a,2)+" ft";return a}}},sum:function(b){var a;b.each(function(c){a+=c});return a}},graph:{google:{progressBar:function(){var a="http://chart.apis.google.com/chart?"}}},util:{loadHeader:function(b){for(var a=0;a>>(32-y));return j}function s(A){var z="";var j;var B;var y;for(j=0;j<=6;j+=2){B=(A>>>(j*4+4))&15;y=(A>>>(j*4))&15;z+=B.toString(16)+y.toString(16)}return z}function u(A){var z="";var y;var j;for(y=7;y>=0;y--){j=(A>>>(y*4))&15;z+=j.toString(16)}return z}function b(y){y=y.replace(/\r\n/g,"\n");var j="";for(var A=0;A127)&&(z<2048)){j+=String.fromCharCode((z>>6)|192);j+=String.fromCharCode((z&63)|128)}else{j+=String.fromCharCode((z>>12)|224);j+=String.fromCharCode(((z>>6)&63)|128);j+=String.fromCharCode((z&63)|128)}}}return j}var h;var w,v;var c=new Array(80);var n=1732584193;var l=4023233417;var k=2562383102;var g=271733878;var f=3285377520;var t,r,q,p,o;var x;e=b(e);var a=e.length;var m=new Array();for(w=0;w>>29);m.push((a<<3)&4294967295);for(h=0;h";return b+a},surfaceSparkline:function(c){var b="http://chart.apis.google.com/chart?chf=bg,s,EBEFF9&chs=80x18&cht=ls&chds=0,1&chco=89A9E4&chm=B,89A9E4,0,0,0&chd=t:";var a=c[0]+","+c[1]+","+c[2]+","+c[3]+","+c[4]+","+c[5];return b+a},showToolTip:function(e,h,g,d){var c=e;var b=h;var a=b.cumulativeOffset().left+g;var f=b.cumulativeOffset().top+d;c.style.top=f+"px";c.style.left=a+"px";c.show()}},weighting:{a:function(a){return 2+(20*threedb.math.log10((Math.pow(12200,2)*Math.pow(a,4))/((Math.pow(a,2)+Math.pow(20.6,2))*(Math.sqrt((Math.pow(a,2)+Math.pow(107.7,2))*(Math.pow(a,2)+Math.pow(737.9,2))))*(Math.pow(a,2)+Math.pow(12200,2)))))},dBASum:function(d){var c=0;var a;for(var b=0;b0){c=10*threedb.math.log10(Math.pow(10,c/10)+Math.pow(10,(a+threedb.weighting.a(threedb.bands.f1[b]))/10))}}return c},dBZSum:function(d){var c,a;for(var b=0;b0){c=10*threedb.math.log10(Math.pow(10,c/10)+Math.pow(10,(a/10)))}}return c}},barrier:{version:"20090805",author:"Rob Miller",website:"http://threedb.com",title:"Barrier Calculation",source:{elevation:function(){return parseFloat($F("sourceElevation"))},distance:function(){return parseFloat($F("sourceDistance"))},q:function(){return parseFloat($F("sourceQ"))}},receiver:{elevation:function(){return parseFloat($F("receiverElevation"))},distance:function(){return parseFloat($F("receiverDistance"))}},barrier:{elevation:function(){return parseFloat($F("barrierElevation"))}},pathLength:{direct:function(){var d=threedb.barrier.source.distance();var b=threedb.barrier.receiver.distance();var c=threedb.barrier.source.elevation();var a=threedb.barrier.receiver.distance();return Math.sqrt(Math.pow(d+b,2)+Math.pow(a-c,2))},barrier:function(){var e=threedb.barrier.source.distance();var c=threedb.barrier.receiver.distance();var d=threedb.barrier.source.elevation();var a=threedb.barrier.receiver.distance();var b=threedb.barrier.barrier.elevation();return Math.sqrt(Math.pow(e,2)+Math.pow(b-d,2))+Math.sqrt(Math.pow(c,2)+Math.pow(b-a,2))},difference:function(){if(threedb.barrier.barrier.elevation()<((threedb.barrier.source.distance()/(threedb.barrier.source.distance()+threedb.barrier.receiver.distance()))*(threedb.barrier.receiver.elevation()-threedb.barrier.source.elevation())+threedb.barrier.source.elevation())){$("warning").innerHTML="No obstruction: barrier provides no attenuation";$("pld").innerHTML="0 ft";return 0}else{$("warning").innerHTML="";var a=threedb.barrier.pathLength.barrier()-threedb.barrier.pathLength.direct();$("pld").innerHTML=accounting.formatNumber(a,2)+" ft";return a}}},fresnelNo:function(a){return(2/threedb.calc.wavelength(a))*threedb.barrier.pathLength.difference()},distanceAtten:{lw:{point:function(){var b=Math.sqrt(Math.pow(threedb.barrier.source.distance()+threedb.barrier.receiver.distance(),2)+Math.pow(threedb.barrier.source.elevation()-threedb.barrier.receiver.elevation(),2));var a=threedb.barrier.source.q();return(20*threedb.math.log10(b))+0.5-(10*threedb.math.log10(a))},line:function(){var b=Math.sqrt(Math.pow(threedb.barrier.source.distance()+threedb.barrier.receiver.distance(),2)+Math.pow(threedb.barrier.source.elevation()-threedb.barrier.receiver.elevation(),2));var a=threedb.barrier.source.q();return(10*threedb.math.log10(b))+2.8-(10*threedb.math.log10(a))}},lp:{point:function(){var c=$F("measDistance");var a=Math.sqrt(Math.pow(threedb.barrier.source.distance()+threedb.barrier.receiver.distance(),2)+Math.pow(threedb.barrier.source.elevation()-threedb.barrier.receiver.elevation(),2));var b=threedb.barrier.source.q();return(20*threedb.math.log10(a/c))+0.5-(10*threedb.math.log10(b))},line:function(){var c=$F("measDistance");var a=Math.sqrt(Math.pow(threedb.barrier.source.distance()+threedb.barrier.receiver.distance(),2)+Math.pow(threedb.barrier.source.elevation()-threedb.barrier.receiver.elevation(),2));var b=threedb.barrier.source.q();return(10*threedb.math.log10(a/c))+2.8-(10*threedb.math.log10(b))}},result:{lw:{point:[],line:[]},lp:{point:[],line:[]}}},simple:{point:function(a){return 10*threedb.math.log10(3+(20*threedb.barrier.fresnelNo(a)))},result:{point:[]}},beranek:{point:function(a){return 20*threedb.math.log10(Math.sqrt(2*Math.PI*threedb.barrier.fresnelNo(a))/threedb.math.tanh(Math.sqrt(2*Math.PI*threedb.barrier.fresnelNo(a))))+5 },line:function(a){return 20*threedb.math.log10(Math.sqrt(2*Math.PI*threedb.barrier.fresnelNo(a))/threedb.math.tanh(Math.sqrt(2*Math.PI*threedb.barrier.fresnelNo(a))))+5},result:{point:[],line:[]}},harris:{point:function(a){return 10*threedb.math.log10(3+(10*threedb.barrier.fresnelNo(a)))},pointThick:function(a){return 10*threedb.math.log10(3+(30*threedb.barrier.fresnelNo(a)))},result:{point:[],pointThick:[],line:[]}},calcBarrier:function(){for(var a=0;aGoogle Chrome for snappy calculating (available on the PC only for now)";a[a.length]="Turn off chart autoupdating to speed up your calculation";$("tip").innerhtml="Tip: "+a[accounting.formatNumber(Math.random()*(a.length-1))]},drawChart:function(){var e;var a=[];function c(){function f(h){return((threedb.barrier.barrier.elevation()-threedb.barrier.source.elevation())/(threedb.barrier.source.distance())*h)+threedb.barrier.barrier.elevation()}if(!(isNaN(threedb.barrier.pathLength.difference()))){for(var g=threedb.barrier.source.distance()*-1;g0;--n){threedb.reflector.rearline.push([(n-g.b)/g.m||null,n||null])}threedb.reflector.frontline=[];var h=[];g.clear();h.m=threedb.math.slope(K.x,K.y,B.x,B.y);h.b=K.y-(K.x*h.m);for(n=B.y;n>0;--n){threedb.reflector.frontline.push([(n-h.b)/h.m||null,n||null])}var e=[];e.clear();e.m=h.m;e.b=K.y-(K.x*e.m);var t=[];t.clear();t.m=g.m;t.b=K.y-(K.x*t.m);threedb.reflector.sectionViewChartSeries[threedb.reflector.sectionViewChartSeries.length]={data:[[u.x,u.y||null],[z.x,z.y||null]],color:"#D3D3D3",lines:{show:true,lineWidth:1},xaxis:1,yaxis:1};threedb.reflector.sectionViewChartSeries[threedb.reflector.sectionViewChartSeries.length]={data:[[B.x||null,B.y||null],[z.x||null,z.y||null]],color:"#D22D2D",lines:{show:true,lineWidth:4},xaxis:1,yaxis:1};threedb.reflector.sectionViewChartSeries[threedb.reflector.sectionViewChartSeries.length]={data:[[u.x,u.y||null],[B.x,B.y||null]],color:"#D3D3D3",lines:{show:true,lineWidth:1},xaxis:1,yaxis:1};threedb.reflector.sectionViewChartSeries[threedb.reflector.sectionViewChartSeries.length]={label:"Virtual Source",data:[[K.x||null,K.y||null]],points:{show:true,radius:3},xaxis:1,yaxis:1};threedb.reflector.sectionViewChartSeries[threedb.reflector.sectionViewChartSeries.length]={data:threedb.reflector.frontline,color:"#808080",lines:{show:true,lineWidth:1},xaxis:1,yaxis:1};threedb.reflector.sectionViewChartSeries[threedb.reflector.sectionViewChartSeries.length]={data:threedb.reflector.rearline,color:"#808080",lines:{show:true,lineWidth:1},xaxis:1,yaxis:1};for(var D=0;D=h.m*o+h.b)&&(n<=g.m*o+g.b)){threedb.reflector.data[o][I][F][D].reflectedDistance=threedb.math.distance(K.x,K.y,o,n);threedb.reflector.data[o][I][F][D].reflectedLevel=u.level-threedb.calc.lp.loss(threedb.reflector.data[o][I][F][D].reflectedDistance);if(threedb.reflector.data[o][I][F][D].delay>0){threedb.reflector.data[o][I][F][D].delay=(threedb.reflector.data[o][I][F][D].reflectedDistance-threedb.reflector.data[o][I][F][D].directDistance)/1130*1000}}}threedb.reflector.minX=Math.min(u.x,Math.min(K.x,Math.min(B.x,Math.min(z.x,Math.min(M,L)))));threedb.reflector.maxX=Math.max(u.x,Math.max(K.x,Math.max(B.x,Math.max(z.x,Math.max(M,L)))));threedb.reflector.minY=Math.min(u.y,Math.min(K.y,Math.min(B.y,Math.min(z.y,Math.min(d,c)))));threedb.reflector.maxY=Math.max(u.y,Math.max(K.y,Math.max(B.y,Math.max(z.y,Math.max(d,c)))))}}}for(o=0;o0){R=threedb.calc.lp.sum(threedb.reflector.data[o][I][F][D].directLevel,R)}if(threedb.reflector.data[o][I][F][D].reflectedLevel>0){O=threedb.calc.lp.sum(threedb.reflector.data[o][I][F][D].reflectedLevel,O);f=threedb.calc.lp.sum(R,O);a=f-R;Q=threedb.reflector.data[o][I][F][D].delay;if(a===0){a=null}if(Q===0){Q=null}}}}}threedb.reflector.directLevel.push([o,R]);threedb.reflector.reflectedLevel.push([o,O]);threedb.reflector.totalLevel.push([o,f]);threedb.reflector.totalDelta.push([o,a]);threedb.reflector.delay.push([o,Q])}}threedb.reflector.sectionViewChartSeries[threedb.reflector.sectionViewChartSeries.length]={data:threedb.reflector.aud,color:"#00A8F0",lines:{show:true,lineWidth:2},xaxis:1,yaxis:1};threedb.reflector.levelChartSeries[threedb.reflector.levelChartSeries.length]={label:"Direct",data:threedb.reflector.directLevel,bars:{show:true,stacked:true,barWidth:0.5,fillOpacity:0.01},xaxis:1,yaxis:1};threedb.reflector.levelChartSeries[threedb.reflector.levelChartSeries.length]={label:"Total Delta",data:threedb.reflector.totalDelta,bars:{show:true,stacked:true,barWidth:0.5,lineWidth:1,fillOpacity:0.01},xaxis:1,yaxis:1};threedb.reflector.delayChartSeries[threedb.reflector.delayChartSeries.length]={data:threedb.reflector.delay,points:{show:true,radius:1},xaxis:1,yaxis:1};var A=threedb.reflector.maxX-threedb.reflector.minX;var w=threedb.reflector.maxY-threedb.reflector.minY;threedb.reflector.minX=threedb.reflector.minX-A*0.2; threedb.reflector.maxX=threedb.reflector.maxX+A*0.2;threedb.reflector.minY=threedb.reflector.minY-w*0.2;threedb.reflector.maxY=threedb.reflector.maxY+w*0.2},getInputs:function(){for(var a=0;aHide Name Distance from Origin, ft Elevation, ft Sound Level, dB ",active:true}));sourceTabs.addListener("change",threedb.reflector.inputCallback);sourceTabs.appendTo("sources")};Source.prototype.hidden=function(){return $F("sourceHide"+this.index)};Source.prototype.drawSource=function(){threedb.reflector.sectionViewChartSeries[threedb.reflector.sectionViewChartSeries.length]={label:"Source",data:[[this.distance||null,this.elevation||null]],points:{show:true,radius:3},xaxis:1,yaxis:1}};var Reflector=function(a){this.index=a;this.distance=null;this.elevation=null;this.length=null;this.rotation=null;this.p=[];this.q=[];this.pq=[];this.sq=[];this.angle=[];this.sr=[];this.r=[];this.i=[];this.iq=[];this.ip=[];this.ipa=[];this.iqa=[]};Reflector.prototype.render=function(){reflectorTabs.addTab(new YAHOO.widget.Tab({label:"Reflector "+(this.index+1),content:"",active:true})); reflectorTabs.addListener("change",threedb.reflector.inputCallback);reflectorTabs.appendTo("reflectors")};Reflector.prototype.hidden=function(){return $F("reflectorHide"+this.index)};threedb.AudienceArea=function(a){this.index=a;this.expanded=false;this.active=true;this.startElevation=null;this.startDistance=null;this.endElevation=null;this.endDistance=null;this.areaLR=0;this.areaFR=0;this.areaFC=0;this.areaSum=0;this.pctOcc=0;this.alpha=[];this.alphaOcc=[];this.alphaUnocc=[];this.rtOcc=[];this.rtUnocc=[];this.rtInterp=[];this.graphData=[];this.graph=null;for(i=0;i",active:true}));audienceAreaTabs.addListener("change",threedb.reflector.inputCallback);audienceAreaTabs.appendTo("audienceAreas")};threedb.AudienceArea.prototype.hidden=function(){return $F("audienceHide"+this.index)};threedb.Room=function(){this.length=0;this.width=0;this.height=0;this.capacity=0;this.rtGoal=0;this.surface=[];this.audience=[];this.sabine=[];this.sabine.calc=[];this.sabine.delta=[];this.sabine.rt=[];this.sabine.formula="\\[ RT_{60} = \\frac{c V}{S\\overline{\\alpha} } \\]";this.sabine.definitions=[["\\( RT_{60} \\)","Reverberation time, seconds (s)"],["\\( c \\)","Constant, 0.161 metric, 0.049 imperial"],["\\( V \\)","Room geometric volume, cubic meters (m³) or cubic feet (ft³)"],["\\( S \\)","Total surface area of room, square meters (m²) or square feet (ft²)"],["\\( \\overline{\\alpha} \\)","Average absorption coefficient of room surface areas"]];this.sabineRTSolution=function(e){var a=accounting.formatNumber(this.sabineRT(e),1);var h=threedb.rt.rtConstant();var b=this.volume();var d=accounting.formatNumber(this.areaSum());var g=accounting.formatNumber(this.avgAlpha(e),2);return"\\[ "+a+" = \\frac{"+h+" \\cdot "+b+"}{"+d+" \\cdot "+g+"} \\]"};this.eyring=[];this.eyring.calc=[];this.eyring.delta=[];this.eyring.rt=[];this.eyring.formula="\\[ RT_{60} = \\frac{c V}{ -S \\cdot ln(1 - \\overline{\\alpha}) } \\]";this.eyring.definitions=[["\\( RT_{60} \\)","Reverberation time, seconds (s)"],["\\( c \\)","Constant, 0.161 metric, 0.049 imperial"],["\\( V \\)","Room geometric volume, cubic meters (m³) or cubic feet (ft³)"],["\\( S \\)","Total surface area of room, square meters (m²) or square feet (ft²)"],["\\( \\overline{\\alpha} \\)","Average absorption coefficient of room surface areas"]];this.eyringRTSolution=function(e){var a=accounting.formatNumber(this.eyringRT(e),1);var h=threedb.rt.rtConstant();var b=this.volume();var d=accounting.formatNumber(this.areaSum());var g=accounting.formatNumber(this.avgAlpha(e),2);return"\\[ "+a+" = \\frac{"+h+" \\cdot "+b+"}{ -"+d+" \\cdot ln( 1 - "+g+")} \\]"};this.fitzroy=[];this.fitzroy.calc=[];this.fitzroy.calc.lr=[];this.fitzroy.calc.fr=[];this.fitzroy.calc.fc=[];this.fitzroy.calc.sum=[];this.fitzroy.rt=[];this.fitzroy.rt.lr=[];this.fitzroy.rt.fr=[];this.fitzroy.rt.fc=[];this.fitzroy.rt.sum=[];this.fitzroy.formula="\\[ RT_{60} = \\left( \\frac{S_x}{S} \\cdot \\frac{cV}{S\\overline{\\alpha}_x} \\right) + \\left( \\frac{S_y}{S} \\cdot \\frac{cV}{S\\overline{\\alpha}_y} \\right) + \\left( \\frac{S_z}{S} \\cdot \\frac{cV}{S\\overline{\\alpha}_z} \\right) \\]";this.fitzroy.definitions=[["\\( RT_{60} \\)","Reverberation time, seconds (s)"],["\\( c \\)","Constant, 0.161 metric, 0.049 imperial"],["\\( V \\)","Room geometric volume, cubic meters (m³) or cubic feet (ft³)"],["\\( S \\)","Total surface area of room, square meters (m²) or square feet (ft²)"],["\\( S_{x,y,z} \\)","Surface area of x, y, or z plane, square meters (m²) or square feet (ft²)"],["\\( \\overline{\\alpha}_{x,y,z} \\)","Average absorption coefficient of room surface x, y, or z plane"]]; this.fitzroyRTSolution=function(b){var a=accounting.formatNumber(this.fitzroyRT(b),1);var d=threedb.rt.rtConstant();var m=this.volume();var n=accounting.formatNumber(this.areaSum());var k=accounting.formatNumber(this.areaFR());var h=accounting.formatNumber(this.areaLR());var e=accounting.formatNumber(this.areaFC());var l=accounting.formatNumber(this.sabinsLR(b)/this.areaFR(),2);var j=accounting.formatNumber(this.sabinsFR(b)/this.areaLR(),2);var g=accounting.formatNumber(this.sabinsFC(b)/this.areaFC(),2);return"\\["+a+"= \\left( \\frac{"+k+"}{"+n+"} \\cdot \\frac{"+d+" \\cdot "+m+"}{"+n+"\\cdot"+l+"} \\right) + \\left( \\frac{"+h+"}{"+n+"} \\cdot \\frac{"+d+" \\cdot "+m+"}{"+n+"\\cdot"+j+"} \\right) + \\left( \\frac{"+e+"}{"+n+"} \\cdot \\frac{"+d+" \\cdot "+m+"}{"+n+"\\cdot"+g+"} \\right) \\]"};this.fitzroyE=[];this.fitzroyE.calc=[];this.fitzroyE.calc.lr=[];this.fitzroyE.calc.fr=[];this.fitzroyE.calc.fc=[];this.fitzroyE.calc.sum=[];this.fitzroyE.rt=[];this.fitzroyE.rt.lr=[];this.fitzroyE.rt.fr=[];this.fitzroyE.rt.fc=[];this.fitzroyE.rt.sum=[];this.fitzroyE.formula="\\[ RT_{60} = \\left( \\frac{S_x}{S} \\cdot \\frac{cV}{-S \\cdot ln(1-\\overline{\\alpha}_x)} \\right) + \\left( \\frac{S_y}{S} \\cdot \\frac{cV}{-S \\cdot ln(1-\\overline{\\alpha}_y)} \\right) + \\left( \\frac{S_z}{S} \\cdot \\frac{cV}{-S \\cdot ln(1-\\overline{\\alpha}_z)} \\right) \\]";this.fitzroyE.definitions=[["\\( RT_{60} \\)","Reverberation time, seconds (s)"],["\\( c \\)","Constant, 0.161 metric, 0.049 imperial"],["\\( V \\)","Room geometric volume, cubic meters (m³) or cubic feet (ft³)"],["\\( S \\)","Total surface area of room, square meters (m²) or square feet (ft²)"],["\\( S_{x,y,z} \\)","Surface area of x, y, or z plane, square meters (m²) or square feet (ft²)"],["\\( \\overline{\\alpha}_{x,y,z} \\)","Average absorption coefficient of room surface x, y, or z plane"]];this.fitzroyERTSolution=function(b){var a=accounting.formatNumber(this.fitzroyRT(b),1);var d=threedb.rt.rtConstant();var m=this.volume();var n=accounting.formatNumber(this.areaSum());var k=accounting.formatNumber(this.areaFR());var h=accounting.formatNumber(this.areaLR());var e=accounting.formatNumber(this.areaFC());var l=accounting.formatNumber(this.sabinsLR(b)/this.areaFR(),2);var j=accounting.formatNumber(this.sabinsFR(b)/this.areaLR(),2);var g=accounting.formatNumber(this.sabinsFC(b)/this.areaFC(),2);return"\\["+a+"= \\left( \\frac{"+k+"}{"+n+"} \\cdot \\frac{"+d+" \\cdot "+m+"}{-"+n+"\\cdot ln(1-"+l+")} \\right) + \\left( \\frac{"+h+"}{"+n+"} \\cdot \\frac{"+d+" \\cdot "+m+"}{-"+n+"\\cdot ln(1-"+j+")} \\right) + \\left( \\frac{"+e+"}{"+n+"} \\cdot \\frac{"+d+" \\cdot "+m+"}{-"+n+"\\cdot ln(1-"+g+")} \\right) \\]"};this.arau=[];this.arau.rt=[];this.arau.rt.lr=[];this.arau.rt.fr=[];this.arau.rt.fc=[];this.arau.rt.sum=[];this.arau.formula="\\[ RT_{60} = \\left( \\frac{cV}{-S \\cdot ln(1-\\overline{\\alpha}_x)} \\right)^{\\frac{S_x}{S}} + \\left( \\frac{cV}{-S \\cdot ln(1-\\overline{\\alpha}_y)} \\right)^{\\frac{S_y}{S}} + \\left( \\frac{cV}{-S \\cdot ln(1-\\overline{\\alpha}_z)} \\right)^{\\frac{S_z}{S}} \\]";this.arau.definitions=[["\\( RT_{60} \\)","Reverberation time, seconds (s)"],["\\( c \\)","Constant, 0.161 metric, 0.049 imperial"],["\\( V \\)","Room geometric volume, cubic meters (m³) or cubic feet (ft³)"],["\\( S \\)","Total surface area of room, square meters (m²) or square feet (ft²)"],["\\( S_{x,y,z} \\)","Surface area of x, y, or z plane, square meters (m²) or square feet (ft²)"],["\\( \\overline{\\alpha}_{x,y,z} \\)","Average absorption coefficient of room surface x, y, or z plane"]];this.arauRTSolution=function(b){var a=accounting.formatNumber(this.fitzroyRT(b),1);var d=threedb.rt.rtConstant();var m=this.volume();var n=accounting.formatNumber(this.areaSum());var k=accounting.formatNumber(this.areaFR());var h=accounting.formatNumber(this.areaLR());var e=accounting.formatNumber(this.areaFC());var l=accounting.formatNumber(this.sabinsLR(b)/this.areaFR(),2);var j=accounting.formatNumber(this.sabinsFR(b)/this.areaLR(),2);var g=accounting.formatNumber(this.sabinsFC(b)/this.areaFC(),2);return"\\["+a+"= \\left( \\frac{"+d+"\\cdot"+m+"}{-"+n+"\\cdot ln(1-"+l+")} \\right)^{\\frac{"+k+"}{"+n+"}} + \\left( \\frac{"+d+"\\cdot"+m+"}{-"+n+"\\cdot ln(1-"+j+")} \\right)^{\\frac{"+h+"}{"+n+"}} + \\left( \\frac{"+d+"\\cdot"+m+"}{-"+n+"\\cdot ln(1-"+g+")} \\right)^{\\frac{"+e+"}{"+n+"}} \\]"}};threedb.Room.prototype.lr=function(){return 2*this.length*this.height};threedb.Room.prototype.fr=function(){return 2*this.width*this.height};threedb.Room.prototype.fc=function(){return 2*this.length*this.width};threedb.Room.prototype.totalsa=function(){return this.lr()+this.fr()+this.fc()};threedb.Room.prototype.volume=function(){return this.length*this.width*this.height };threedb.Room.prototype.mfp=function(){return 4*this.volume()/this.totalsa()};threedb.Room.prototype.vpp=function(){return this.volume()/this.capacity};threedb.Room.prototype.rtGoalSpectrum=function(c){var b=[];b[0]=this.rtGoal*1.2;b[1]=this.rtGoal*1.05;b[2]=this.rtGoal*1.01;b[3]=this.rtGoal*1;b[4]=this.rtGoal*1;b[5]=this.rtGoal*1;return b[c]};threedb.Room.prototype.rtBySabins=function(a){return threedb.rt.rtConstant()*this.volume()/(this.totalsa()*a)};threedb.Room.prototype.sabinGoal=function(a){return threedb.rt.rtConstant()*this.volume()/$F("rtGoal"+threedb.freq[a])};threedb.Room.prototype.areaLR=function(){var a=0;for(i=0;i

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Distance from Origin, ft

Elevation, ft

Length, ft

Rotation, degrees

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Starting Elevation, ft

Starting Distance from Origin, ft

Ending Elevation, ft

Ending Distance from Origin, ft