text: /*
      Copyright (c) 2012 DinahMoe AB
  
      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.
      
      Bitcrusher & Moog Filter by Zach Denton
  */
  
  // https://developer.mozilla.org/en-US/docs/Web_Audio_API/Porting_webkitAudioContext_code_to_standards_based_AudioContext
  
  // Originally written by Alessandro Saccoia, Chris Coniglio and Oskar Eriksson
  
  (function (window) {
      var userContext;
      var userInstance;
      var Tuna = function (context) {
  			if (!window.AudioContext) {
  				window.AudioContext = window.webkitAudioContext;
  			}
              if (!context) {
                  console.log("tuna.js: Missing audio context! Creating a new context for you.");
                  context = window.AudioContext && (new window.AudioContext());
              }
              userContext = context;
              userInstance = this;
          },
          version = "0.1",
          set = "setValueAtTime",
          linear = "linearRampToValueAtTime",
          pipe = function (param, val) {
              param.value = val;
          },
          Super = Object.create(null, {
              activate: {
                  writable: true,
                  value: function (doActivate) {
                      if (doActivate) {
                          this.input.disconnect();
                          this.input.connect(this.activateNode);
                          if (this.activateCallback) {
                              this.activateCallback(doActivate);
                          }
                      } else {
                          this.input.disconnect();
                          this.input.connect(this.output);
                      }
                  }
              },
              bypass: {
                  get: function () {
                      return this._bypass;
                  },
                  set: function (value) {
                      if (this._lastBypassValue === value) {
                          return;
                      }
                      this._bypass = value;
                      this.activate(!value);
                      this._lastBypassValue = value;
                  }
              },
              connect: {
                  value: function (target) {
                      this.output.connect(target);
                  }
              },
              disconnect: {
                  value: function (target) {
                      this.output.disconnect(target);
                  }
              },
              connectInOrder: {
                  value: function (nodeArray) {
                      var i = nodeArray.length - 1;
                      while(i--) {
                          if (!nodeArray[i].connect) {
                              return console.error("AudioNode.connectInOrder: TypeError: Not an AudioNode.", nodeArray[i]);
                          }
                          if (nodeArray[i + 1].input) {
                              nodeArray[i].connect(nodeArray[i + 1].input);
                          } else {
                              nodeArray[i].connect(nodeArray[i + 1]);
                          }
                      }
                  }
              },
              getDefaults: {
                  value: function () {
                      var result = {};
                      for(var key in this.defaults) {
                          result[key] = this.defaults[key].value;
                      }
                      return result;
                  }
              },
              getValues: {
                  value: function () {
                      var result = {};
                      for(var key in this.defaults) {
                          result[key] = this[key];
                      }
                      return result;
                  }
              },
              automate: {
                  value: function (property, value, duration, startTime) {
                      var start = startTime ? ~~ (startTime / 1000) : userContext.currentTime,
                          dur = duration ? ~~ (duration / 1000) : 0,
                          _is = this.defaults[property],
                          param = this[property],
                          method;
  
                      if (param) {
                          if (_is.automatable) {
                              if (!duration) {
                                  method = set;
                              } else {
                                  method = linear;
                                  param.cancelScheduledValues(start);
                                  param.setValueAtTime(param.value, start);
                              }
                              param[method](value, dur + start);
                          } else {
                              param = value;
                          }
                      } else {
                          console.error("Invalid Property for " + this.name);
                      }
                  }
              }
          }),
          FLOAT = "float",
          BOOLEAN = "boolean",
          STRING = "string",
          INT = "int";
  
      function dbToWAVolume(db) {
          return Math.max(0, Math.round(100 * Math.pow(2, db / 6)) / 100);
      }
  
      function fmod(x, y) {
          // http://kevin.vanzonneveld.net
          // +   original by: Onno Marsman
          // +      input by: Brett Zamir (http://brett-zamir.me)
          // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
          // *     example 1: fmod(5.7, 1.3);
          // *     returns 1: 0.5
          var tmp, tmp2, p = 0,
              pY = 0,
              l = 0.0,
              l2 = 0.0;
  
          tmp = x.toExponential().match(/^.\.?(.*)e(.+)$/);
          p = parseInt(tmp[2], 10) - (tmp[1] + '').length;
          tmp = y.toExponential().match(/^.\.?(.*)e(.+)$/);
          pY = parseInt(tmp[2], 10) - (tmp[1] + '').length;
  
          if (pY > p) {
              p = pY;
          }
  
          tmp2 = (x % y);
  
          if (p < -100 || p > 20) {
              // toFixed will give an out of bound error so we fix it like this:
              l = Math.round(Math.log(tmp2) / Math.log(10));
              l2 = Math.pow(10, l);
  
              return(tmp2 / l2).toFixed(l - p) * l2;
          } else {
              return parseFloat(tmp2.toFixed(-p));
          }
      }
  
      function sign(x) {
          if (x === 0) {
              return 1;
          } else {
              return Math.abs(x) / x;
          }
      }
  
      function tanh(n) {
          return(Math.exp(n) - Math.exp(-n)) / (Math.exp(n) + Math.exp(-n));
      }
  
      Tuna.toString = Tuna.prototype.toString = function () {
          return "You are running Tuna version " + version + " by Dinahmoe!";
      };
      Tuna.prototype.Filter = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.input = userContext.createGain();
          this.activateNode = userContext.createGain();
          this.filter = userContext.createBiquadFilter();
          this.output = userContext.createGain();
  
          this.activateNode.connect(this.filter);
          this.filter.connect(this.output);
  
          this.frequency = properties.frequency || this.defaults.frequency.value;
          this.Q = properties.resonance || this.defaults.Q.value;
          this.filterType = properties.filterType || this.defaults.filterType.value;
          this.gain = properties.gain || this.defaults.gain.value;
          this.bypass = properties.bypass || false;
      };
      Tuna.prototype.Filter.prototype = Object.create(Super, {
          name: {
              value: "Filter"
          },
          defaults: {
              writable:true,
              value: {
                  frequency: {
                      value: 800,
                      min: 20,
                      max: 22050,
                      automatable: true
                  },
                  Q: {
                      value: 1,
                      min: 0.001,
                      max: 100,
                      automatable: true
                  },
                  gain: {
                      value: 0,
                      min: -40,
                      max: 40,
                      automatable: true
                  },
                  bypass: {
                      value: true,
                      automatable: false,
                      type: BOOLEAN
                  },
                  filterType: {
                      value: 1,
                      min: 0,
                      max: 7,
                      automatable: false,
                      type: INT
                  }
              }
          },
          filterType: {
              enumerable: true,
              get: function () {
                  return this.filter.type;
              },
              set: function (value) {
                  this.filter.type = value;
              }
          },
          Q: {
              enumerable: true,
              get: function () {
                  return this.filter.Q;
              },
              set: function (value) {
                  this.filter.Q.value = value;
              }
          },
          gain: {
              enumerable: true,
              get: function () {
                  return this.filter.gain;
              },
              set: function (value) {
                  this.filter.gain.value = value;
              }
          },
          frequency: {
              enumerable: true,
              get: function () {
                  return this.filter.frequency;
              },
              set: function (value) {
                  this.filter.frequency.value = value;
              }
          }
      });
      Tuna.prototype.Bitcrusher = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.bufferSize = properties.bufferSize || this.defaults.bufferSize.value;
  
          this.input = userContext.createGain();
          this.activateNode = userContext.createGain();
          this.processor = userContext.createScriptProcessor(this.bufferSize, 1, 1);
          this.output = userContext.createGain();
  
          this.activateNode.connect(this.processor);
          this.processor.connect(this.output);
  
          var phaser = 0, last = 0;
          this.processor.onaudioprocess = function (e) {
              var input = e.inputBuffer.getChannelData(0),
                  output = e.outputBuffer.getChannelData(0),
                  step = Math.pow(1/2, this.bits);
              for(var i = 0; i < input.length; i++) {
                  phaser += this.normfreq;
                  if (phaser >= 1.0) {
                      phaser -= 1.0;
                      last = step * Math.floor(input[i] / step + 0.5);
                  }
                  output[i] = last;
              }
          };
  
          this.bits = properties.bits || this.defaults.bits.value;
          this.normfreq = properties.normfreq || this.defaults.normfreq.value;
          this.bypass = properties.bypass || false;
      };
      Tuna.prototype.Bitcrusher.prototype = Object.create(Super, {
          name: {
              value: "Bitcrusher"
          },
          defaults: {
              writable: true,
              value: {
                  bits: {
                      value: 4,
                      min: 1,
                      max: 16,
                      automatable: false,
                      type: INT
                  },
                  bufferSize: {
                      value: 4096,
                      min: 256,
                      max: 16384,
                      automatable: false,
                      type: INT
                  },
                  bypass: {
                      value: false,
                      automatable: false,
                      type: BOOLEAN
                  },
                  normfreq: {
                      value: 0.1,
                      min: 0.0001,
                      max: 1.0,
                      automatable: false,
                  }
              }
          },
          bits: {
              enumerable: true,
              get: function () {
                  return this.processor.bits;
              },
              set: function (value) {
                  this.processor.bits = value;
              }
          },
          normfreq: {
              enumerable: true,
              get: function () {
                  return this.processor.normfreq;
              },
              set: function (value) {
                  this.processor.normfreq = value;
              }
          }
      });
      Tuna.prototype.Cabinet = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.input = userContext.createGain();
          this.activateNode = userContext.createGain();
          this.convolver = this.newConvolver(properties.impulsePath || "../impulses/impulse_guitar.wav");
          this.makeupNode = userContext.createGain();
          this.output = userContext.createGain();
  
          this.activateNode.connect(this.convolver.input);
          this.convolver.output.connect(this.makeupNode);
          this.makeupNode.connect(this.output);
  
          this.makeupGain = properties.makeupGain || this.defaults.makeupGain;
          this.bypass = properties.bypass || false;
      };
      Tuna.prototype.Cabinet.prototype = Object.create(Super, {
          name: {
              value: "Cabinet"
          },
          defaults: {
              writable:true,
              value: {
                  makeupGain: {
                      value: 1,
                      min: 0,
                      max: 20,
                      automatable: true
                  },
                  bypass: {
                      value: false,
                      automatable: false,
                      type: BOOLEAN
                  }
              }
          },
          makeupGain: {
              enumerable: true,
              get: function () {
                  return this.makeupNode.gain;
              },
              set: function (value) {
                  this.makeupNode.gain.value = value;
              }
          },
          newConvolver: {
              value: function (impulsePath) {
                  return new userInstance.Convolver({
                      impulse: impulsePath,
                      dryLevel: 0,
                      wetLevel: 1
                  });
              }
          }
      });
      Tuna.prototype.Chorus = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.input = userContext.createGain();
          this.attenuator = this.activateNode = userContext.createGain();
          this.splitter = userContext.createChannelSplitter(2);
          this.delayL = userContext.createDelayNode();
          this.delayR = userContext.createDelayNode();
          this.feedbackGainNodeLR = userContext.createGain();
          this.feedbackGainNodeRL = userContext.createGain();
          this.merger = userContext.createChannelMerger(2);
          this.output = userContext.createGain();
  
          this.lfoL = new userInstance.LFO({
              target: this.delayL.delayTime,
              callback: pipe
          });
          this.lfoR = new userInstance.LFO({
              target: this.delayR.delayTime,
              callback: pipe
          });
  
          this.input.connect(this.attenuator);
          this.attenuator.connect(this.output);
          this.attenuator.connect(this.splitter);
          this.splitter.connect(this.delayL, 0);
          this.splitter.connect(this.delayR, 1);
          this.delayL.connect(this.feedbackGainNodeLR);
          this.delayR.connect(this.feedbackGainNodeRL);
          this.feedbackGainNodeLR.connect(this.delayR);
          this.feedbackGainNodeRL.connect(this.delayL);
          this.delayL.connect(this.merger, 0, 0);
          this.delayR.connect(this.merger, 0, 1);
          this.merger.connect(this.output);
  
          this.feedback = properties.feedback || this.defaults.feedback.value;
          this.rate = properties.rate || this.defaults.rate.value;
          this.delay = properties.delay || this.defaults.delay.value;
          this.depth = properties.depth || this.defaults.depth.value;
          this.lfoR.phase = Math.PI / 2;
          this.attenuator.gain.value = 0.6934; // 1 / (10 ^ (((20 * log10(3)) / 3) / 20))
          this.lfoL.activate(true);
          this.lfoR.activate(true);
          this.bypass = properties.bypass || false;
      };
      Tuna.prototype.Chorus.prototype = Object.create(Super, {
          name: {
              value: "Chorus"
          },
          defaults: {
              writable:true,
              value: {
                  feedback: {
                      value: 0.4,
                      min: 0,
                      max: 0.95,
                      automatable: false,
                  },
                  delay: {
                      value: 0.0045,
                      min: 0,
                      max: 1,
                      automatable: false,
                  },
                  depth: {
                      value: 0.7,
                      min: 0,
                      max: 1,
                      automatable: false,
                  },
                  rate: {
                      value: 1.5,
                      min: 0,
                      max: 8,
                      automatable: false,
                  },
                  bypass: {
                      value: true,
                      automatable: false,
                      type: BOOLEAN
                  }
              }
          },
          delay: {
              enumerable: true,
              get: function () {
                  return this._delay;
              },
              set: function (value) {
                  this._delay = 0.0002 * (Math.pow(10, value) * 2);
                  this.lfoL.offset = this._delay;
                  this.lfoR.offset = this._delay;
                  this._depth = this._depth;
              }
          },
          depth: {
              enumerable: true,
              get: function () {
                  return this._depth;
              },
              set: function (value) {
                  this._depth = value;
                  this.lfoL.oscillation = this._depth * this._delay;
                  this.lfoR.oscillation = this._depth * this._delay;
              }
          },
          feedback: {
              enumerable: true,
              get: function () {
                  return this._feedback;
              },
              set: function (value) {
                  this._feedback = value;
                  this.feedbackGainNodeLR.gain.value = this._feedback;
                  this.feedbackGainNodeRL.gain.value = this._feedback;
              }
          },
          rate: {
              enumerable: true,
              get: function () {
                  return this._rate;
              },
              set: function (value) {
                  this._rate = value;
                  this.lfoL.frequency = this._rate;
                  this.lfoR.frequency = this._rate;
              }
          }
      });
      Tuna.prototype.Compressor = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.input = userContext.createGain();
          this.compNode = this.activateNode = userContext.createDynamicsCompressor();
          this.makeupNode = userContext.createGain();
          this.output = userContext.createGain();
  
          this.compNode.connect(this.makeupNode);
          this.makeupNode.connect(this.output);
  
          this.automakeup = properties.automakeup || this.defaults.automakeup.value;
          this.makeupGain = properties.makeupGain || this.defaults.makeupGain.value;
          this.threshold = properties.threshold || this.defaults.threshold.value;
          this.release = properties.release || this.defaults.release.value;
          this.attack = properties.attack || this.defaults.attack.value;
          this.ratio = properties.ratio || this.defaults.ratio.value;
          this.knee = properties.knee || this.defaults.knee.value;
          this.bypass = properties.bypass || false;
      };
      Tuna.prototype.Compressor.prototype = Object.create(Super, {
          name: {
              value: "Compressor"
          },
          defaults: {
              writable:true,
              value: {
                  threshold: {
                      value: -20,
                      min: -60,
                      max: 0,
                      automatable: true
                  },
                  release: {
                      value: 250,
                      min: 10,
                      max: 2000,
                      automatable: true
                  },
                  makeupGain: {
                      value: 1,
                      min: 1,
                      max: 100,
                      automatable: true
                  },
                  attack: {
                      value: 1,
                      min: 0,
                      max: 1000,
                      automatable: true
                  },
                  ratio: {
                      value: 4,
                      min: 1,
                      max: 50,
                      automatable: true
                  },
                  knee: {
                      value: 5,
                      min: 0,
                      max: 40,
                      automatable: true
                  },
                  automakeup: {
                      value: false,
                      automatable: false,
                      type: BOOLEAN
                  },
                  bypass: {
                      value: true,
                      automatable: false,
                      type: BOOLEAN
                  }
              }
          },
          computeMakeup: {
              value: function () {
                  var magicCoefficient = 4,
                      // raise me if the output is too hot
                      c = this.compNode;
                  return -(c.threshold.value - c.threshold.value / c.ratio.value) / magicCoefficient;
              }
          },
          automakeup: {
              enumerable: true,
              get: function () {
                  return this._automakeup;
              },
              set: function (value) {
                  this._automakeup = value;
                  if (this._automakeup) this.makeupGain = this.computeMakeup();
              }
          },
          threshold: {
              enumerable: true,
              get: function () {
                  return this.compNode.threshold;
              },
              set: function (value) {
                  this.compNode.threshold.value = value;
                  if (this._automakeup) this.makeupGain = this.computeMakeup();
              }
          },
          ratio: {
              enumerable: true,
              get: function () {
                  return this.compNode.ratio;
              },
              set: function (value) {
                  this.compNode.ratio.value = value;
                  if (this._automakeup) this.makeupGain = this.computeMakeup();
              }
          },
          knee: {
              enumerable: true,
              get: function () {
                  return this.compNode.knee;
              },
              set: function (value) {
                  this.compNode.knee.value = value;
                  if (this._automakeup) this.makeupGain = this.computeMakeup();
              }
          },
          attack: {
              enumerable: true,
              get: function () {
                  return this.compNode.attack;
              },
              set: function (value) {
                  this.compNode.attack.value = value / 1000;
              }
          },
          release: {
              enumerable: true,
              get: function () {
                  return this.compNode.release;
              },
              set: function (value) {
                  this.compNode.release = value / 1000;
              }
          },
          makeupGain: {
              enumerable: true,
              get: function () {
                  return this.makeupNode.gain;
              },
              set: function (value) {
                  this.makeupNode.gain.value = dbToWAVolume(value);
              }
          }
      });
      Tuna.prototype.Convolver = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.input = userContext.createGain();
          this.activateNode = userContext.createGain();
          this.convolver = userContext.createConvolver();
          this.dry = userContext.createGain();
          this.filterLow = userContext.createBiquadFilter();
          this.filterHigh = userContext.createBiquadFilter();
          this.wet = userContext.createGain();
          this.output = userContext.createGain();
  
          this.activateNode.connect(this.filterLow);
          this.activateNode.connect(this.dry);
          this.filterLow.connect(this.filterHigh);
          this.filterHigh.connect(this.convolver);
          this.convolver.connect(this.wet);
          this.wet.connect(this.output);
          this.dry.connect(this.output);
  
          this.dryLevel = properties.dryLevel || this.defaults.dryLevel.value;
          this.wetLevel = properties.wetLevel || this.defaults.wetLevel.value;
          this.highCut = properties.highCut || this.defaults.highCut.value;
          this.buffer = properties.impulse || "../impulses/ir_rev_short.wav";
          this.lowCut = properties.lowCut || this.defaults.lowCut.value;
          this.level = properties.level || this.defaults.level.value;
          this.filterHigh.type = this.filterHigh.LOWPASS;
          this.filterLow.type = this.filterHigh.HIGHPASS;
          this.bypass = properties.bypass || false;
      };
      Tuna.prototype.Convolver.prototype = Object.create(Super, {
          name: {
              value: "Convolver"
          },
          defaults: {
              writable:true,
              value: {
                  highCut: {
                      value: 22050,
                      min: 20,
                      max: 22050,
                      automatable: true
                  },
                  lowCut: {
                      value: 20,
                      min: 20,
                      max: 22050,
                      automatable: true
                  },
                  dryLevel: {
                      value: 1,
                      min: 0,
                      max: 1,
                      automatable: true
                  },
                  wetLevel: {
                      value: 1,
                      min: 0,
                      max: 1,
                      automatable: true
                  },
                  level: {
                      value: 1,
                      min: 0,
                      max: 1,
                      automatable: true
                  }
              }
          },
          lowCut: {
              get: function () {
                  return this.filterLow.frequency;
              },
              set: function (value) {
                  this.filterLow.frequency.value = value;
              }
          },
          highCut: {
              get: function () {
                  return this.filterHigh.frequency;
              },
              set: function (value) {
                  this.filterHigh.frequency.value = value;
              }
          },
          level: {
              get: function () {
                  return this.output.gain;
              },
              set: function (value) {
                  this.output.gain.value = value;
              }
          },
          dryLevel: {
              get: function () {
                  return this.dry.gain
              },
              set: function (value) {
                  this.dry.gain.value = value;
              }
          },
          wetLevel: {
              get: function () {
                  return this.wet.gain;
              },
              set: function (value) {
                  this.wet.gain.value = value;
              }
          },
          buffer: {
              enumerable: false,
              get: function () {
                  return this.convolver.buffer;
              },
              set: function (impulse) {
                  var convolver = this.convolver,
                      xhr = new XMLHttpRequest();
                  if (!impulse) {
                      console.log("Tuna.Convolver.setBuffer: Missing impulse path!");
                      return;
                  }
                  xhr.open("GET", impulse, true);
                  xhr.responseType = "arraybuffer";
                  xhr.onreadystatechange = function () {
                      if (xhr.readyState === 4) {
                          if (xhr.status < 300 && xhr.status > 199 || xhr.status === 302) {
                              userContext.decodeAudioData(xhr.response, function (buffer) {
                                  convolver.buffer = buffer;
                              }, function (e) {
                                  if (e) console.log("Tuna.Convolver.setBuffer: Error decoding data" + e);
                              });
                          }
                      }
                  };
                  xhr.send(null);
              }
          }
      });
      Tuna.prototype.Delay = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.input = userContext.createGain();
          this.activateNode = userContext.createGain();
          this.dry = userContext.createGain();
          this.wet = userContext.createGain();
          this.filter = userContext.createBiquadFilter();
          this.delay = userContext.createDelayNode();
          this.feedbackNode = userContext.createGain();
          this.output = userContext.createGain();
  
          this.activateNode.connect(this.delay);
          this.activateNode.connect(this.dry);
          this.delay.connect(this.filter);
          this.filter.connect(this.feedbackNode);
          this.feedbackNode.connect(this.delay);
          this.feedbackNode.connect(this.wet);
          this.wet.connect(this.output);
          this.dry.connect(this.output);
  
          this.delayTime = properties.delayTime || this.defaults.delayTime.value;
          this.feedback = properties.feedback || this.defaults.feedback.value;
          this.wetLevel = properties.wetLevel || this.defaults.wetLevel.value;
          this.dryLevel = properties.dryLevel || this.defaults.dryLevel.value;
          this.cutoff = properties.cutoff || this.defaults.cutoff.value;
          this.filter.type = this.filter.LOWPASS;
          this.bypass = properties.bypass || false;
      };
      
      Tuna.prototype.Delay.prototype = Object.create(Super, {
          name: {
              value: "Delay"
          },
          defaults: {
              writable:true,
              value: {
                  delayTime: {
                      value: 100,
                      min: 20,
                      max: 1000,
                      automatable: false,
                  },
                  feedback: {
                      value: 0.45,
                      min: 0,
                      max: 0.9,
                      automatable: true
                  },
                  cutoff: {
                      value: 20000,
                      min: 20,
                      max: 20000,
                      automatable: true
                  },
                  wetLevel: {
                      value: 0.5,
                      min: 0,
                      max: 1,
                      automatable: true
                  },
                  dryLevel: {
                      value: 1,
                      min: 0,
                      max: 1,
                      automatable: true
                  }
              }
          },
          delayTime: {
              enumerable: true,
              get: function () {
                  return this.delay.delayTime;
              },
              set: function (value) {
                  this.delay.delayTime.value = value / 1000;
              }
          },
          wetLevel: {
              enumerable: true,
              get: function () {
                  return this.wet.gain;
              },
              set: function (value) {
                  this.wet.gain.value = value;
              }
          },
          dryLevel: {
              enumerable: true,
              get: function () {
                  return this.dry.gain;
              },
              set: function (value) {
                  this.dry.gain.value = value;
              }
          },
          feedback: {
              enumerable: true,
              get: function () {
                  return this.feedbackNode.gain;
              },
              set: function (value) {
                  this.feedbackNode.gain.value = value;
              }
          },
          cutoff: {
              enumerable: true,
              get: function () {
                  return this.filter.frequency;
              },
              set: function (value) {
                  this.filter.frequency.value = value;
              }
          }
      });
      Tuna.prototype.MoogFilter = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.bufferSize = properties.bufferSize || this.defaults.bufferSize.value;
  
          this.input = userContext.createGain();
          this.activateNode = userContext.createGain();
          this.processor = userContext.createScriptProcessor(this.bufferSize, 1, 1);
          this.output = userContext.createGain();
  
          this.activateNode.connect(this.processor);
          this.processor.connect(this.output);
  
          var in1, in2, in3, in4, out1, out2, out3, out4;
          in1 = in2 = in3 = in4 = out1 = out2 = out3 = out4 = 0.0;
          this.processor.onaudioprocess = function (e) {
              var input = e.inputBuffer.getChannelData(0),
                  output = e.outputBuffer.getChannelData(0),
                  f = this.cutoff * 1.16,
                  fb = this.resonance * (1.0 - 0.15 * f * f);
              for(var i = 0; i < input.length; i++) {
                  input[i] -= out4 * fb;
                  input[i] *= 0.35013 * (f*f)*(f*f);
                  out1 = input[i] + 0.3 * in1 + (1 - f) * out1; // Pole 1
                  in1 = input[i];
                  out2 = out1 + 0.3 * in2 + (1 - f) * out2; // Pole 2
                  in2 = out1;
                  out3 = out2 + 0.3 * in3 + (1 - f) * out3; // Pole 3
                  in3 = out2;
                  out4 = out3 + 0.3 * in4 + (1 - f) * out4; // Pole 4
                  in4 = out3;
                  output[i] = out4;
              }
          };
  
          this.cutoff = properties.cutoff || this.defaults.cutoff.value;
          this.resonance = properties.resonance || this.defaults.resonance.value;
          this.bypass = properties.bypass || false;
      };
      Tuna.prototype.MoogFilter.prototype = Object.create(Super, {
          name: {
              value: "MoogFilter"
          },
          defaults: {
              writable: true,
              value: {
                  bufferSize: {
                      value: 4096,
                      min: 256,
                      max: 16384,
                      automatable: false,
                      type: INT
                  },
                  bypass: {
                      value: false,
                      automatable: false,
                      type: BOOLEAN
                  },
                  cutoff: {
                      value: 0.065,
                      min: 0.0001,
                      max: 1.0,
                      automatable: false,
                  },
                  resonance: {
                      value: 3.5,
                      min: 0.0,
                      max: 4.0,
                      automatable: false,
                  }
              }
          },
          cutoff: {
              enumerable: true,
              get: function () {
                  return this.processor.cutoff;
              },
              set: function (value) {
                  this.processor.cutoff = value;
              }
          },
          resonance: {
              enumerable: true,
              get: function () {
                  return this.processor.resonance;
              },
              set: function (value) {
                  this.processor.resonance = value;
              }
          }
      });
      Tuna.prototype.Overdrive = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.input = userContext.createGain();
          this.activateNode = userContext.createGain();
          this.inputDrive = userContext.createGain();
          this.waveshaper = userContext.createWaveShaper();
          this.outputDrive = userContext.createGain();
          this.output = userContext.createGain();
  
          this.activateNode.connect(this.inputDrive);
          this.inputDrive.connect(this.waveshaper);
          this.waveshaper.connect(this.outputDrive);
          this.outputDrive.connect(this.output);
  
          this.ws_table = new Float32Array(this.k_nSamples);
          this.drive = properties.drive || this.defaults.drive.value;
          this.outputGain = properties.outputGain || this.defaults.outputGain.value;
          this.curveAmount = properties.curveAmount || this.defaults.curveAmount.value;
          this.algorithmIndex = properties.algorithmIndex || this.defaults.algorithmIndex.value;
          this.bypass = properties.bypass || false;
      };
      Tuna.prototype.Overdrive.prototype = Object.create(Super, {
          name: {
              value: "Overdrive"
          },
          defaults: {
              writable:true,
              value: {
                  drive: {
                      value: 1,
                      min: 0,
                      max: 1,
                      automatable: true,
                      type: FLOAT,
                      scaled: true
                  },
                  outputGain: {
                      value: 1,
                      min: 0,
                      max: 1,
                      automatable: true,
                      type: FLOAT,
                      scaled: true
                  },
                  curveAmount: {
                      value: 0.725,
                      min: 0,
                      max: 1,
                      automatable: false,
                  },
                  algorithmIndex: {
                      value: 0,
                      min: 0,
                      max: 5,
                      automatable: false,
                      type: INT
                  }
              }
          },
          k_nSamples: {
              value: 8192
          },
          drive: {
              get: function () {
                  return this.inputDrive.gain;
              },
              set: function (value) {
                  this._drive = value;
              }
          },
          curveAmount: {
              get: function () {
                  return this._curveAmount;
              },
              set: function (value) {
                  this._curveAmount = value;
                  if (this._algorithmIndex === undefined) {
                      this._algorithmIndex = 0;
                  }
                  this.waveshaperAlgorithms[this._algorithmIndex](this._curveAmount, this.k_nSamples, this.ws_table);
                  this.waveshaper.curve = this.ws_table;
              }
          },
          outputGain: {
              get: function () {
                  return this.outputDrive.gain;
              },
              set: function (value) {
                  this._outputGain = dbToWAVolume(value);
              }
          },
          algorithmIndex: {
              get: function () {
                  return this._algorithmIndex;
              },
              set: function (value) {
                  this._algorithmIndex = value>>0;
                  this.curveAmount = this._curveAmount;
              }
          },
          waveshaperAlgorithms: {
              value: [
  
              function (amount, n_samples, ws_table) {
                  amount = Math.min(amount, 0.9999);
                  var k = 2 * amount / (1 - amount),
                      i, x;
                  for(i = 0; i < n_samples; i++) {
                      x = i * 2 / n_samples - 1;
                      ws_table[i] = (1 + k) * x / (1 + k * Math.abs(x));
                  }
              }, function (amount, n_samples, ws_table) {
                  var i, x, y;
                  for(i = 0; i < n_samples; i++) {
                      x = i * 2 / n_samples - 1;
                      y = ((0.5 * Math.pow((x + 1.4), 2)) - 1) * y >= 0 ? 5.8 : 1.2;
                      ws_table[i] = tanh(y);
                  }
              }, function (amount, n_samples, ws_table) {
                  var i, x, y, a = 1 - amount;
                  for(i = 0; i < n_samples; i++) {
                      x = i * 2 / n_samples - 1;
                      y = x < 0 ? -Math.pow(Math.abs(x), a + 0.04) : Math.pow(x, a);
                      ws_table[i] = tanh(y * 2);
                  }
              }, function (amount, n_samples, ws_table) {
                  var i, x, y, abx, a = 1 - amount > 0.99 ? 0.99 : 1 - amount;
                  for(i = 0; i < n_samples; i++) {
                      x = i * 2 / n_samples - 1;
                      abx = Math.abs(x);
                      if (abx < a) y = abx;
                      else if (abx > a) y = a + (abx - a) / (1 + Math.pow((abx - a) / (1 - a), 2));
                      else if (abx > 1) y = abx;
                      ws_table[i] = sign(x) * y * (1 / ((a + 1) / 2));
                  }
              }, function (amount, n_samples, ws_table) { // fixed curve, amount doesn't do anything, the distortion is just from the drive
                  var i, x;
                  for(i = 0; i < n_samples; i++) {
                      x = i * 2 / n_samples - 1;
                      if (x < -0.08905) {
                          ws_table[i] = (-3 / 4) * (1 - (Math.pow((1 - (Math.abs(x) - 0.032857)), 12)) + (1 / 3) * (Math.abs(x) - 0.032847)) + 0.01;
                      } else if (x >= -0.08905 && x < 0.320018) {
                          ws_table[i] = (-6.153 * (x * x)) + 3.9375 * x;
                      } else {
                          ws_table[i] = 0.630035;
                      }
                  }
              }, function (amount, n_samples, ws_table) {
                  var a = 2 + Math.round(amount * 14),
                      // we go from 2 to 16 bits, keep in mind for the UI
                      bits = Math.round(Math.pow(2, a - 1)),
                      // real number of quantization steps divided by 2
                      i, x;
                  for(i = 0; i < n_samples; i++) {
                      x = i * 2 / n_samples - 1;
                      ws_table[i] = Math.round(x * bits) / bits;
                  }
              }]
          }
      });
      Tuna.prototype.Phaser = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.input = userContext.createGain();
          this.splitter = this.activateNode = userContext.createChannelSplitter(2);
          this.filtersL = [];
          this.filtersR = [];
          this.feedbackGainNodeL = userContext.createGain();
          this.feedbackGainNodeR = userContext.createGain();
          this.merger = userContext.createChannelMerger(2);
          this.filteredSignal = userContext.createGain();
          this.output = userContext.createGain();
          this.lfoL = new userInstance.LFO({
              target: this.filtersL,
              callback: this.callback
          });
          this.lfoR = new userInstance.LFO({
              target: this.filtersR,
              callback: this.callback
          });
  
          var i = this.stage;
          while(i--) {
              this.filtersL[i] = userContext.createBiquadFilter();
              this.filtersR[i] = userContext.createBiquadFilter();
              this.filtersL[i].type = this.filtersL[i].ALLPASS;
              this.filtersR[i].type = this.filtersR[i].ALLPASS;
          }
          this.input.connect(this.splitter);
          this.input.connect(this.output);
          this.splitter.connect(this.filtersL[0], 0, 0);
          this.splitter.connect(this.filtersR[0], 1, 0);
          this.connectInOrder(this.filtersL);
          this.connectInOrder(this.filtersR);
          this.filtersL[this.stage - 1].connect(this.feedbackGainNodeL);
          this.filtersL[this.stage - 1].connect(this.merger, 0, 0);
          this.filtersR[this.stage - 1].connect(this.feedbackGainNodeR);
          this.filtersR[this.stage - 1].connect(this.merger, 0, 1);
          this.feedbackGainNodeL.connect(this.filtersL[0]);
          this.feedbackGainNodeR.connect(this.filtersR[0]);
          this.merger.connect(this.output);
  
          this.rate = properties.rate || this.defaults.rate.value;
          this.baseModulationFrequency = properties.baseModulationFrequency || this.defaults.baseModulationFrequency.value;
          this.depth = properties.depth || this.defaults.depth.value;
          this.feedback = properties.feedback || this.defaults.feedback.value;
          this.stereoPhase = properties.stereoPhase || this.defaults.stereoPhase.value;
  
          this.lfoL.activate(true);
          this.lfoR.activate(true);
          this.bypass = properties.bypass || false;
      };
      Tuna.prototype.Phaser.prototype = Object.create(Super, {
          name: {
              value: "Phaser"
          },
          stage: {
              value: 4
          },
          defaults: {
              writable:true,
              value: {
                  rate: {
                      value: 0.1,
                      min: 0,
                      max: 8,
                      automatable: false,
                  },
                  depth: {
                      value: 0.6,
                      min: 0,
                      max: 1,
                      automatable: false,
                  },
                  feedback: {
                      value: 0.7,
                      min: 0,
                      max: 1,
                      automatable: false,
                  },
                  stereoPhase: {
                      value: 40,
                      min: 0,
                      max: 180,
                      automatable: false,
                  },
                  baseModulationFrequency: {
                      value: 700,
                      min: 500,
                      max: 1500,
                      automatable: false,
                  }
              }
          },
          callback: {
              value: function (filters, value) {
                  for(var stage = 0; stage < 4; stage++) {
                      filters[stage].frequency.value = value;
                  }
              }
          },
          depth: {
              get: function () {
                  return this._depth;
              },
              set: function (value) {
                  this._depth = value;
                  this.lfoL.oscillation = this._baseModulationFrequency * this._depth;
                  this.lfoR.oscillation = this._baseModulationFrequency * this._depth;
              }
          },
          rate: {
              get: function () {
                  return this._rate;
              },
              set: function (value) {
                  this._rate = value;
                  this.lfoL.frequency = this._rate;
                  this.lfoR.frequency = this._rate;
              }
          },
          baseModulationFrequency: {
              enumerable: true,
              get: function () {
                  return this._baseModulationFrequency;
              },
              set: function (value) {
                  this._baseModulationFrequency = value;
                  this.lfoL.offset = this._baseModulationFrequency;
                  this.lfoR.offset = this._baseModulationFrequency;
                  this._depth = this._depth;
              }
          },
          feedback: {
              get: function () {
                  return this._feedback;
              },
              set: function (value) {
                  this._feedback = value;
                  this.feedbackGainNodeL.gain.value = this._feedback;
                  this.feedbackGainNodeR.gain.value = this._feedback;
              }
          },
          stereoPhase: {
              get: function () {
                  return this._stereoPhase;
              },
              set: function (value) {
                  this._stereoPhase = value;
                  var newPhase = this.lfoL._phase + this._stereoPhase * Math.PI / 180;
                  newPhase = fmod(newPhase, 2 * Math.PI);
                  this.lfoR._phase = newPhase;
              }
          }
      });
      Tuna.prototype.Tremolo = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.input = userContext.createGain();
          this.splitter = this.activateNode = userContext.createChannelSplitter(2), this.amplitudeL = userContext.createGain(), this.amplitudeR = userContext.createGain(), this.merger = userContext.createChannelMerger(2), this.output = userContext.createGain();
          this.lfoL = new userInstance.LFO({
              target: this.amplitudeL.gain,
              callback: pipe
          });
          this.lfoR = new userInstance.LFO({
              target: this.amplitudeR.gain,
              callback: pipe
          });
  
          this.input.connect(this.splitter);
          this.splitter.connect(this.amplitudeL, 0);
          this.splitter.connect(this.amplitudeR, 1);
          this.amplitudeL.connect(this.merger, 0, 0);
          this.amplitudeR.connect(this.merger, 0, 1);
          this.merger.connect(this.output);
  
          this.rate = properties.rate || this.defaults.rate.value;
          this.intensity = properties.intensity || this.defaults.intensity.value;
          this.stereoPhase = properties.stereoPhase || this.defaults.stereoPhase.value;
  
          this.lfoL.offset = 1 - (this.intensity / 2);
          this.lfoR.offset = 1 - (this.intensity / 2);
          this.lfoL.phase = this.stereoPhase * Math.PI / 180;
  
          this.lfoL.activate(true);
          this.lfoR.activate(true);
          this.bypass = properties.bypass || false;
      };
      Tuna.prototype.Tremolo.prototype = Object.create(Super, {
          name: {
              value: "Tremolo"
          },
          defaults: {
              writable:true,
              value: {
                  intensity: {
                      value: 0.3,
                      min: 0,
                      max: 1,
                      automatable: false,
                  },
                  stereoPhase: {
                      value: 0,
                      min: 0,
                      max: 180,
                      automatable: false,
                  },
                  rate: {
                      value: 5,
                      min: 0.1,
                      max: 11,
                      automatable: false,
                  }
              }
          },
          intensity: {
              enumerable: true,
              get: function () {
                  return this._intensity;
              },
              set: function (value) {
                  this._intensity = value;
                  this.lfoL.offset = 1 - this._intensity / 2;
                  this.lfoR.offset = 1 - this._intensity / 2;
                  this.lfoL.oscillation = this._intensity;
                  this.lfoR.oscillation = this._intensity;
              }
          },
          rate: {
              enumerable: true,
              get: function () {
                  return this._rate;
              },
              set: function (value) {
                  this._rate = value;
                  this.lfoL.frequency = this._rate;
                  this.lfoR.frequency = this._rate;
              }
          },
          stereoPhase: {
              enumerable: true,
              get: function () {
                  return this._rate;
              },
              set: function (value) {
                  this._stereoPhase = value;
                  var newPhase = this.lfoL._phase + this._stereoPhase * Math.PI / 180;
                  newPhase = fmod(newPhase, 2 * Math.PI);
                  this.lfoR.phase = newPhase;
              }
          }
      });
      Tuna.prototype.WahWah = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.input = userContext.createGain();
          this.activateNode = userContext.createGain();
          this.envelopeFollower = new userInstance.EnvelopeFollower({
              target: this,
              callback: function (context, value) {
                  context.sweep = value;
              }
          });
          this.filterBp = userContext.createBiquadFilter();
          this.filterPeaking = userContext.createBiquadFilter();
          this.output = userContext.createGain();
  
          //Connect AudioNodes
          this.activateNode.connect(this.filterBp);
          this.filterBp.connect(this.filterPeaking);
          this.filterPeaking.connect(this.output);
  
          //Set Properties
          this.init();
          this.automode = properties.enableAutoMode || this.defaults.automode.value;
          this.resonance = properties.resonance || this.defaults.resonance.value;
          this.sensitivity = properties.sensitivity || this.defaults.sensitivity.value;
          this.baseFrequency = properties.baseFrequency || this.defaults.baseFrequency.value;
          this.excursionOctaves = properties.excursionOctaves || this.defaults.excursionOctaves.value;
          this.sweep = properties.sweep || this.defaults.sweep.value;
  
          this.activateNode.gain.value = 2;
          this.envelopeFollower.activate(true);
          this.bypass = properties.bypass || false;
      };
      Tuna.prototype.WahWah.prototype = Object.create(Super, {
          name: {
              value: "WahWah"
          },
          defaults: {
              writable:true,
              value: {
                  automode: {
                      value: true,
                      automatable: false,
                      type: BOOLEAN
                  },
                  baseFrequency: {
                      value: 0.5,
                      min: 0,
                      max: 1,
                      automatable: false,
                  },
                  excursionOctaves: {
                      value: 2,
                      min: 1,
                      max: 6,
                      automatable: false,
                  },
                  sweep: {
                      value: 0.2,
                      min: 0,
                      max: 1,
                      automatable: false,
                  },
                  resonance: {
                      value: 10,
                      min: 1,
                      max: 100,
                      automatable: false,
                  },
                  sensitivity: {
                      value: 0.5,
                      min: -1,
                      max: 1,
                      automatable: false,
                  }
              }
          },
          activateCallback: {
              value: function (value) {
                  this.automode = value;
              }
          },
          automode: {
              get: function () {
                  return this._automode;
              },
              set: function (value) {
                  this._automode = value;
                  if (value) {
                      this.activateNode.connect(this.envelopeFollower.input);
                      this.envelopeFollower.activate(true);
                  } else {
                      this.envelopeFollower.activate(false);
                      this.activateNode.disconnect();
                      this.activateNode.connect(this.filterBp);
                  }
              }
          },
          sweep: {
              enumerable: true,
              get: function () {
                  return this._sweep.value;
              },
              set: function (value) {
                  this._sweep = Math.pow(value > 1 ? 1 : value < 0 ? 0 : value, this._sensitivity);
                  this.filterBp.frequency.value = this._baseFrequency + this._excursionFrequency * this._sweep;
                  this.filterPeaking.frequency.value = this._baseFrequency + this._excursionFrequency * this._sweep;
              }
          },
          baseFrequency: {
              enumerable: true,
              get: function () {
                  return this._baseFrequency;
              },
              set: function (value) {
                  this._baseFrequency = 50 * Math.pow(10, value * 2);
                  this._excursionFrequency = Math.min(this.sampleRate / 2, this.baseFrequency * Math.pow(2, this._excursionOctaves));
                  this.filterBp.frequency.value = this._baseFrequency + this._excursionFrequency * this._sweep;
                  this.filterPeaking.frequency.value = this._baseFrequency + this._excursionFrequency * this._sweep;
              }
          },
          excursionOctaves: {
              enumerable: true,
              get: function () {
                  return this._excursionOctaves;
              },
              set: function (value) {
                  this._excursionOctaves = value;
                  this._excursionFrequency = Math.min(this.sampleRate / 2, this.baseFrequency * Math.pow(2, this._excursionOctaves));
                  this.filterBp.frequency.value = this._baseFrequency + this._excursionFrequency * this._sweep;
                  this.filterPeaking.frequency.value = this._baseFrequency + this._excursionFrequency * this._sweep;
              }
          },
          sensitivity: {
              enumerable: true,
              get: function () {
                  return this._sensitivity;
              },
              set: function (value) {
                  this._sensitivity = Math.pow(10, value);
              }
          },
          resonance: {
              enumerable: true,
              get: function () {
                  return this._resonance;
              },
              set: function (value) {
                  this._resonance = value;
                  this.filterPeaking.Q = this._resonance;
              }
          },
          init: {
              value: function () {
                  this.output.gain.value = 1;
                  this.filterPeaking.type = 5;
                  this.filterBp.type = 2;
                  this.filterPeaking.frequency.value = 100;
                  this.filterPeaking.gain.value = 20;
                  this.filterPeaking.Q.value = 5;
                  this.filterBp.frequency.value = 100;
                  this.filterBp.Q.value = 1;
                  this.sampleRate = userContext.sampleRate;
              }
          }
      });
      Tuna.prototype.EnvelopeFollower = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.input = userContext.createGain();
          this.jsNode = this.output = userContext.createScriptProcessor(this.buffersize, 1, 1);
  
          this.input.connect(this.output);
  
          this.attackTime = properties.attackTime || this.defaults.attackTime.value;
          this.releaseTime = properties.releaseTime || this.defaults.releaseTime.value;
          this._envelope = 0;
          this.target = properties.target || {};
          this.callback = properties.callback || function () {};
      };
      Tuna.prototype.EnvelopeFollower.prototype = Object.create(Super, {
          name: {
              value: "EnvelopeFollower"
          },
          defaults: {
              value: {
                  attackTime: {
                      value: 0.003,
                      min: 0,
                      max: 0.5,
                      automatable: false,
                  },
                  releaseTime: {
                      value: 0.5,
                      min: 0,
                      max: 0.5,
                      automatable: false,
                  }
              }
          },
          buffersize: {
              value: 256
          },
          envelope: {
              value: 0
          },
          sampleRate: {
              value: 44100
          },
          attackTime: {
              enumerable: true,
              get: function () {
                  return this._attackTime;
              },
              set: function (value) {
                  this._attackTime = value;
                  this._attackC = Math.exp(-1 / this._attackTime * this.sampleRate / this.buffersize);
              }
          },
          releaseTime: {
              enumerable: true,
              get: function () {
                  return this._releaseTime;
              },
              set: function (value) {
                  this._releaseTime = value;
                  this._releaseC = Math.exp(-1 / this._releaseTime * this.sampleRate / this.buffersize);
              }
          },
          callback: {
              get: function () {
                  return this._callback;
              },
              set: function (value) {
                  if (typeof value === "function") {
                      this._callback = value;
                  } else {
                      console.error("tuna.js: " + this.name + ": Callback must be a function!");
                  }
              }
          },
          target: {
              get: function () {
                  return this._target;
              },
              set: function (value) {
                  this._target = value;
              }
          },
          activate: {
              value: function (doActivate) {
                  this.activated = doActivate;
                  if (doActivate) {
                      this.jsNode.connect(userContext.destination);
                      this.jsNode.onaudioprocess = this.returnCompute(this);
                  } else {
                      this.jsNode.disconnect();
                      this.jsNode.onaudioprocess = null;
                  }
              }
          },
          returnCompute: {
              value: function (instance) {
                  return function (event) {
                      instance.compute(event);
                  };
              }
          },
          compute: {
              value: function (event) {
                  var count = event.inputBuffer.getChannelData(0).length,
                      channels = event.inputBuffer.numberOfChannels,
                      current, chan, rms, i;
                  chan = rms = i = 0;
                  if (channels > 1) { //need to mixdown
                      for(i = 0; i < count; ++i) {
                          for(; chan < channels; ++chan) {
                              current = event.inputBuffer.getChannelData(chan)[i];
                              rms += (current * current) / channels;
                          }
                      }
                  } else {
                      for(i = 0; i < count; ++i) {
                          current = event.inputBuffer.getChannelData(0)[i];
                          rms += (current * current);
                      }
                  }
                  rms = Math.sqrt(rms);
  
                  if (this._envelope < rms) {
                      this._envelope *= this._attackC;
                      this._envelope += (1 - this._attackC) * rms;
                  } else {
                      this._envelope *= this._releaseC;
                      this._envelope += (1 - this._releaseC) * rms;
                  }
                  this._callback(this._target, this._envelope);
              }
          }
      });
      
      // Low-frequency oscillation
      Tuna.prototype.LFO = function (properties) {
          //Instantiate AudioNode
          this.output = userContext.createScriptProcessor(256, 1, 1);
          this.activateNode = userContext.destination;
  
          //Set Properties
          this.frequency = properties.frequency || this.defaults.frequency.value;
          this.offset = properties.offset || this.defaults.offset.value;
          this.oscillation = properties.oscillation || this.defaults.oscillation.value;
          this.phase = properties.phase || this.defaults.phase.value;
          this.target = properties.target || {};
          this.output.onaudioprocess = this.callback(properties.callback || function () {});
          this.bypass = properties.bypass || false;
      };
      Tuna.prototype.LFO.prototype = Object.create(Super, {
          name: {
              value: "LFO"
          },
          bufferSize: {
              value: 256
          },
          sampleRate: {
              value: 44100
          },
          defaults: {
              value: {
                  frequency: {
                      value: 1,
                      min: 0,
                      max: 20,
                      automatable: false,
                  },
                  offset: {
                      value: 0.85,
                      min: 0,
                      max: 22049,
                      automatable: false,
                  },
                  oscillation: {
                      value: 0.3,
                      min: -22050,
                      max: 22050,
                      automatable: false,
                  },
                  phase: {
                      value: 0,
                      min: 0,
                      max: 2 * Math.PI,
                      automatable: false,
                  }
              }
          },
          frequency: {
              get: function () {
                  return this._frequency;
              },
              set: function (value) {
                  this._frequency = value;
                  this._phaseInc = 2 * Math.PI * this._frequency * this.bufferSize / this.sampleRate;
              }
          },
          offset: {
              get: function () {
                  return this._offset;
              },
              set: function (value) {
                  this._offset = value;
              }
          },
          oscillation: {
              get: function () {
                  return this._oscillation;
              },
              set: function (value) {
                  this._oscillation = value;
              }
          },
          phase: {
              get: function () {
                  return this._phase;
              },
              set: function (value) {
                  this._phase = value;
              }
          },
          target: {
              get: function () {
                  return this._target;
              },
              set: function (value) {
                  this._target = value;
              }
          },
          activate: {
              value: function (doActivate) {
                  if (!doActivate) {
                      this.output.disconnect(userContext.destination);
                  } else {
                      this.output.connect(userContext.destination);
                  }
              }
          },
          callback: {
              value: function (callback) {
                  var that = this;
                  return function () {
                      that._phase += that._phaseInc;
                      if (that._phase > 2 * Math.PI) {
                          that._phase = 0;
                      }
                      callback(that._target, that._offset + that._oscillation * Math.sin(that._phase));
                  };
              }
          }
      });
  
  	/* Panner 
  	------------------------------------------------*/
      Tuna.prototype.Panner = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
          this.input = userContext.createGain();
          this.activateNode = userContext.createGain();
          this.output = userContext.createGain();
  		this.panner = userContext.createPanner();
  
          this.activateNode.connect(this.panner);
  		this.panner.connect(this.output);
  
          this.bypass = properties.bypass || false;
          this.x = properties.x || 0;
          this.y = properties.y || 1;
          this.z = properties.z || 1;
          this.panningModel = properties.panningModel || 0;
          this.distanceModel = properties.distanceModel || 0;
      };
  
  	var PannerPosition = function(type) {
  		return {
              enumerable: true,
              get: function () {
                  return this["_" + type];
              },
              set: function (value) {
                  this["_" + type] = value;
  				this.panner.setPosition(this._x || 0, this._y || 0, this._z || 0);
              }
          }
  	};
  	
  	var PannerModel = function(type) {
  		return {
              enumerable: true,
              get: function () {
                  return this["_" + type];
              },
              set: function (value) {
                  this["_" + type] = value;
  				this.panner[type] = value;
              }
          }
  	};
  	
  	var Clamp = function(value, min, max, automatable) {
  		return {
  			value: value,
  			min: min,
  			max: max,
  			automatable: automatable
  		};
  	};
  	
      Tuna.prototype.Panner.prototype = Object.create(Super, {
          name: {
              value: "Panner"
          },
          defaults: {
              writable:true,
              value: {
                  x: Clamp(0, -20, 20, false),
                  y: Clamp(0, -20, 20, false),
                  z: Clamp(0, -20, 20, false),
                  distanceModel: Clamp(0, 0, 2, false),
                  panningModel: Clamp(0, 0, 2, false)
              }
          },
          x: PannerPosition("x"),
          y: PannerPosition("y"),
          z: PannerPosition("z"),
          panningModel: PannerModel("panningModel"),
          distanceModel: PannerModel("distanceModel")
      });
  
  	/* Volume 
  	------------------------------------------------*/
      Tuna.prototype.Volume = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
  
          this.input = userContext.createGain();
          this.activateNode = userContext.createGain();
          this.output = userContext.createGain();
  
          this.activateNode.connect(this.output);
  
          this.bypass = properties.bypass || false;
          this.amount = properties.amount || this.defaults.amount.value;
      };
  
      Tuna.prototype.Volume.prototype = Object.create(Super, {
          name: {
              value: "Volume"
          },
          defaults: {
              writable:true,
              value: {
                  amount: Clamp(0, 0, 2, false)
              }
          },
          amount: {
              enumerable: true,
              get: function () {
                  return this._volume;
              },
              set: function (value) {
                  this._volume = value;
                  this.activateNode.gain.value = value;
              }
          }
      });
  
  	/* Frequency 
  	------------------------------------------------*/
      Tuna.prototype.Frequency = function (properties) {
          if (!properties) {
              properties = this.getDefaults();
          }
  
  		this.trebleFilter = userContext.createBiquadFilter();
  		this.trebleFilter.type = this.trebleFilter.HIGHSHELF;
  		this.trebleFilter.frequency.value = 8000; // 1k+
  		this.trebleFilter.Q.value = 0;
  		this.midtoneFilter = userContext.createBiquadFilter();
  		this.midtoneFilter.type = this.midtoneFilter.PEAKING;
  		this.midtoneFilter.frequency.value = 1000; // 200-1k
  		this.midtoneFilter.Q.value = 0;
  		this.bassFilter = userContext.createBiquadFilter();
  		this.bassFilter.type = this.bassFilter.LOWSHELF;
  		this.bassFilter.frequency.value = 200; // 60-200k
  		this.bassFilter.Q.value = 0;
  		
          this.input = userContext.createGain();
          this.activateNode = userContext.createGain();
          this.output = userContext.createGain();
  
  		this.activateNode.connect(this.bassFilter);
  		this.bassFilter.connect(this.midtoneFilter);
  		this.midtoneFilter.connect(this.trebleFilter);
          this.trebleFilter.connect(this.output);
  
          this.bypass = properties.bypass || false;
          this.volume = properties.volume || false;
          this.treble = properties.treble || false;
          this.midtone = properties.midtone || false;
          this.bass = properties.bass || false;
      };
  
      var GainValue = function(type, nodeId) {
      	return {
              enumerable: true,
              get: function () {
                  return this["_" + type];
              },
              set: function (value) {
                  this["_" + type] = value;
                  this[nodeId || type + "Filter"].gain.value = value;
              }
          };
      };
  
      Tuna.prototype.Frequency.prototype = Object.create(Super, {
          name: {
              value: "Frequency"
          },
          defaults: {
              writable:true,
              value: {
              	volume: Clamp(1, 0, 2, false),
                  treble: Clamp(0, -20, 20, false),
                  midtone: Clamp(0, -20, 20, false),
                  bass: Clamp(0, -20, 20, false)
              }
          },
          volume: GainValue("volume", "activateNode"),
          treble: GainValue("treble"),
          midtone: GainValue("midtone"),
          bass: GainValue("bass")
      });
  
      if (typeof define === "function") {
          define("Tuna", [], function () {
              return Tuna;
          });
      } else {
          window.Tuna = Tuna;
      }
  })(this);