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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<!-- Made with ❤️ by Carter Feldman (https://github.com/cf) -->
<!--
MIT License
Copyright (c) 2020 Carter Feldman
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
-->
<title>◢ ◤ AVICII Guitar - Turn up the sound</title>
<link rel="shortcut icon" href="/favicon.ico">
<style type="text/css">
body,html{font-weight:200;text-align:center;padding:0;margin:0;height:100%;width:100%;display:flex;justify-content:center;flex-direction:column;background:#fff;color:#000}*{box-sizing:border-box;font-family:-apple-system,'Segoe UI',Roboto,Ubuntu,'Helvetica Neue',sans-serif}#title{font-size:54px;margin-bottom:12px}#sub{font-size:16px;margin-bottom:20px}button{padding:12px 24px;background:#fff;border:1px solid #000;color:#000;cursor:pointer;outline:0;transition:all ease .5s}button:hover{background:#000;color:#fff}button:active{background:#000;color:red}
</style>
</head>
<body>
<div id=main>
<div id=title>AVICII</div>
<div id=sub>Turn up the volume</div>
</div>
<script>
(function(){
var startAudioMain=(function(){
var tickMultiplier = 800.0013333355556;
window.AudioContext = window.AudioContext || window.webkitAudioContext;
var aCtx=new AudioContext();
var Notes={C0:16.35,CS0:17.32,D0:18.35,Eb0:19.45,E0:20.60,F0:21.83,FS0:23.12,G0:24.50,GS0:25.96,A0:27.50,Bb0:29.14,B0:30.87,C1:32.70,CS1:34.65,D1:36.71,Eb1:38.89,E1:41.20,F1:43.65,FS1:46.25,G1:49.00,GS1:51.91,A1:55.00,Bb1:58.27,B1:61.74,C2:65.41,CS2:69.30,D2:73.42,Eb2:77.78,E2:82.41,F2:87.31,FS2:92.50,G2:98.00,GS2:103.8,A2:110.0,Bb2:116.5,B2:123.5,C3:130.8,CS3:138.6,D3:146.8,Eb3:155.6,E3:164.8,F3:174.6,FS3:185.0,G3:196.0,GS3:207.7,A3:220.0,Bb3:233.1,B3:246.9,C4:261.6,CS4:277.2,D4:293.7,Eb4:311.1,E4:329.6,F4:349.2,FS4:370.0,G4:392.0,GS4:415.3,A4:440.0,Bb4:466.2,B4:493.9,C5:523.3,CS5:554.4,D5:587.3,Eb5:622.3,E5:659.3,F5:698.5,FS5:740.0,G5:784.0,GS5:830.6,A5:880.0,Bb5:932.3,B5:987.8,C6:1047,CS6:1109,D6:1175,Eb6:1245,E6:1319,F6:1397,FS6:1480,G6:1568,GS6:1661,A6:1760,Bb6:1865,B6:1976,C7:2093,CS7:2217,D7:2349,Eb7:2489,E7:2637,F7:2794,FS7:2960,G7:3136,GS7:3322,A7:3520,Bb7:3729,B7:3951,C8:4186,CS8:4435,D8:4699,Eb8:4978,E8:5274,F8:5588,FS8:5920,G8:6272,GS8:6645,A8:7040,Bb8:7459,B8:7902,DS0:19.45,AS0:29.14,DS1:38.89,AS1:58.27,DS2:77.78,AS2:116.5,DS3:155.6,AS3:233.1,DS4:311.1,AS4:466.2,DS5:622.3,AS5:932.3,DS6:1245,AS6:1865,DS7:2489,AS7:3729,DS8:4978,AS8:7459};
function cfn2(o){
return {
time: o[1]/tickMultiplier,
noteName: o[2],
duration: o[0]/tickMultiplier,
end: (o[1]+o[0])/tickMultiplier,
freq: Notes[o[2]],
}
}
var tracks = (function(){
var A = "DS5", B = "F5", C = "C4", D = "GS5", E = "C5", F = "G3", G = "AS4", H = "GS3", I = "GS4", J = "F4", K = "AS3", L = "DS4", M = "CS4", N = "F3", O = "DS3", P = "CS3", Q = "F2", R = "C3", S = "C2", T = "CS2", U = "DS2", V = "CS5", W = "AS5", X = "C6", Y = 113, Z = 227;
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return [mainTrackI, bgTrackI];
})();
var mainTrack = tracks[0], bgTrack = tracks[1];
var song=mainTrack;
var lastK=0,timeConstant=1/aCtx.sampleRate,lastF=0,lastT=0,curInd=0;
var noteBuf=[];
function GuitarString(frequency)
{
//frequency*=0.666666;
this.capacity=Math.round(aCtx.sampleRate/frequency)|0;
this.buffer=new Float32Array(this.capacity);
this.ticCount=0;
this.curInd=0;
this.freq=frequency;
this.activeUntil = 0;
this.fadeAmt = 1;
}
GuitarString.prototype.pluck=function(amt)
{
this.fadeAmt = typeof amt==='number'?amt:1;
var c=this.buffer.length|0;
for(var i=0;i<c;i++)
{
this.buffer[i]=(Math.random()-0.5)*0.9;
}
}
GuitarString.prototype.tic2=function(ts)
{
var i=this.curInd%this.buffer.length;
this.buffer[i]=(ts<=this.activeUntil?0.996:0.9)*(this.buffer[i]+this.buffer[(++this.curInd)%this.buffer.length])/2;
return this.buffer[i]/this.fadeAmt;
};
var DS5 = new GuitarString(Notes.DS5), F5 = new GuitarString(Notes.F5), C4 = new GuitarString(Notes.C4), GS5 = new GuitarString(Notes.GS5), C5 = new GuitarString(Notes.C5), G3 = new GuitarString(Notes.G3), AS4 = new GuitarString(Notes.AS4), GS3 = new GuitarString(Notes.GS3), GS4 = new GuitarString(Notes.GS4), F4 = new GuitarString(Notes.F4), AS3 = new GuitarString(Notes.AS3), DS4 = new GuitarString(Notes.DS4), CS4 = new GuitarString(Notes.CS4), F3 = new GuitarString(Notes.F3), DS3 = new GuitarString(Notes.DS3), CS3 = new GuitarString(Notes.CS3), F2 = new GuitarString(Notes.F2), C3 = new GuitarString(Notes.C3), C2 = new GuitarString(Notes.C2), CS2 = new GuitarString(Notes.CS2), DS2 = new GuitarString(Notes.DS2), CS5 = new GuitarString(Notes.CS5), AS5 = new GuitarString(Notes.AS5), C6 = new GuitarString(Notes.C6);
var guitarStringMap = {
DS5: DS5,
F5: F5,
C4: C4,
GS5: GS5,
C5: C5,
G3: G3,
AS4: AS4,
GS3: GS3,
GS4: GS4,
F4: F4,
AS3: AS3,
DS4: DS4,
CS4: CS4,
F3: F3,
DS3: DS3,
CS3: CS3,
F2: F2,
C3: C3,
C2: C2,
CS2: CS2,
DS2: DS2,
CS5: CS5,
AS5: AS5,
C6: C6
}
function SampleSin(t, pct){
return (Math.cos(pct*Math.PI/2))*Math.sin(440*t*(Math.PI*2))/2
}
var curIndBg = 0;
var curBgNoteBuf = [];
function accProc3(e)
{
var o=e.outputBuffer.getChannelData(0);
var t=(lastK/aCtx.sampleRate);
var ik=0,dt=0;
for(var i=0;i<o.length;i++)
{
while(curInd<mainTrack.length&&t>=mainTrack[curInd].time)
{
var gsmi = guitarStringMap[mainTrack[curInd].noteName];
gsmi.activeUntil = Math.max(gsmi.activeUntil, mainTrack[curInd].end);
gsmi.pluck(1);
curInd++;
}
while(curIndBg<bgTrack.length&&t>=bgTrack[curIndBg].time)
{
var gsmi = guitarStringMap[bgTrack[curIndBg].noteName];
gsmi.activeUntil = Math.max(gsmi.activeUntil, bgTrack[curIndBg].end);
gsmi.pluck(bgTrack[curIndBg].freq<100?3:1.5);
curBgNoteBuf.push(bgTrack[curIndBg]);
curIndBg++;
}
o[i]=(DS5.tic2(t) + F5.tic2(t) + C4.tic2(t) + GS5.tic2(t) + C5.tic2(t) + G3.tic2(t) + AS4.tic2(t) + GS3.tic2(t) + GS4.tic2(t) + F4.tic2(t) + AS3.tic2(t) + DS4.tic2(t) + CS4.tic2(t) + F3.tic2(t) + DS3.tic2(t) + CS3.tic2(t) + F2.tic2(t) + C3.tic2(t) + C2.tic2(t) + CS2.tic2(t) + DS2.tic2(t) + CS5.tic2(t) + AS5.tic2(t) + C6.tic2(t));
for(var x=0;x<curBgNoteBuf.length;x++)
{
if(t>curBgNoteBuf[x].time+curBgNoteBuf[x].duration)
{
curBgNoteBuf.splice(x,1);
x--;
continue;
}else{
curBgNoteBuf[x].noteName
o[i]+=SampleSin((t-curBgNoteBuf[x].time)*curBgNoteBuf[x].freq/440, (t-curBgNoteBuf[x].time)/curBgNoteBuf[x].duration)/6;
}
}
t+=timeConstant;
if(curInd>=mainTrack.length)
{
t=0;
curInd=0;
curIndBg=0;
lastK=0;
return;
}
}
lastK+=o.length;
}
function startSynth()
{
var scrNode=aCtx.createScriptProcessor(2048, 1, 1);
scrNode.onaudioprocess=accProc3;
scrNode.connect(aCtx.destination);
}
startSynth();
})
var btn=document.createElement("button")
btn.innerHTML="Start";
btn.onclick=function(){
startAudioMain();
this.parentElement.removeChild(this);
};
document.getElementById("main").appendChild(btn);
})();
</script>
</body>
</html>