hydra-synth/dist/hydra-synth.js

base synth for hydra-editor

(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Hydra = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// 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.

'use strict';

var R = typeof Reflect === 'object' ? Reflect : null
var ReflectApply = R && typeof R.apply === 'function'
  ? R.apply
  : function ReflectApply(target, receiver, args) {
    return Function.prototype.apply.call(target, receiver, args);
  }

var ReflectOwnKeys
if (R && typeof R.ownKeys === 'function') {
  ReflectOwnKeys = R.ownKeys
} else if (Object.getOwnPropertySymbols) {
  ReflectOwnKeys = function ReflectOwnKeys(target) {
    return Object.getOwnPropertyNames(target)
      .concat(Object.getOwnPropertySymbols(target));
  };
} else {
  ReflectOwnKeys = function ReflectOwnKeys(target) {
    return Object.getOwnPropertyNames(target);
  };
}

function ProcessEmitWarning(warning) {
  if (console && console.warn) console.warn(warning);
}

var NumberIsNaN = Number.isNaN || function NumberIsNaN(value) {
  return value !== value;
}

function EventEmitter() {
  EventEmitter.init.call(this);
}
module.exports = EventEmitter;
module.exports.once = once;

// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._eventsCount = 0;
EventEmitter.prototype._maxListeners = undefined;

// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
var defaultMaxListeners = 10;

function checkListener(listener) {
  if (typeof listener !== 'function') {
    throw new TypeError('The "listener" argument must be of type Function. Received type ' + typeof listener);
  }
}

Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
  enumerable: true,
  get: function() {
    return defaultMaxListeners;
  },
  set: function(arg) {
    if (typeof arg !== 'number' || arg < 0 || NumberIsNaN(arg)) {
      throw new RangeError('The value of "defaultMaxListeners" is out of range. It must be a non-negative number. Received ' + arg + '.');
    }
    defaultMaxListeners = arg;
  }
});

EventEmitter.init = function() {

  if (this._events === undefined ||
      this._events === Object.getPrototypeOf(this)._events) {
    this._events = Object.create(null);
    this._eventsCount = 0;
  }

  this._maxListeners = this._maxListeners || undefined;
};

// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
  if (typeof n !== 'number' || n < 0 || NumberIsNaN(n)) {
    throw new RangeError('The value of "n" is out of range. It must be a non-negative number. Received ' + n + '.');
  }
  this._maxListeners = n;
  return this;
};

function _getMaxListeners(that) {
  if (that._maxListeners === undefined)
    return EventEmitter.defaultMaxListeners;
  return that._maxListeners;
}

EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
  return _getMaxListeners(this);
};

EventEmitter.prototype.emit = function emit(type) {
  var args = [];
  for (var i = 1; i < arguments.length; i++) args.push(arguments[i]);
  var doError = (type === 'error');

  var events = this._events;
  if (events !== undefined)
    doError = (doError && events.error === undefined);
  else if (!doError)
    return false;

  // If there is no 'error' event listener then throw.
  if (doError) {
    var er;
    if (args.length > 0)
      er = args[0];
    if (er instanceof Error) {
      // Note: The comments on the `throw` lines are intentional, they show
      // up in Node's output if this results in an unhandled exception.
      throw er; // Unhandled 'error' event
    }
    // At least give some kind of context to the user
    var err = new Error('Unhandled error.' + (er ? ' (' + er.message + ')' : ''));
    err.context = er;
    throw err; // Unhandled 'error' event
  }

  var handler = events[type];

  if (handler === undefined)
    return false;

  if (typeof handler === 'function') {
    ReflectApply(handler, this, args);
  } else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      ReflectApply(listeners[i], this, args);
  }

  return true;
};

function _addListener(target, type, listener, prepend) {
  var m;
  var events;
  var existing;

  checkListener(listener);

  events = target._events;
  if (events === undefined) {
    events = target._events = Object.create(null);
    target._eventsCount = 0;
  } else {
    // To avoid recursion in the case that type === "newListener"! Before
    // adding it to the listeners, first emit "newListener".
    if (events.newListener !== undefined) {
      target.emit('newListener', type,
                  listener.listener ? listener.listener : listener);

      // Re-assign `events` because a newListener handler could have caused the
      // this._events to be assigned to a new object
      events = target._events;
    }
    existing = events[type];
  }

  if (existing === undefined) {
    // Optimize the case of one listener. Don't need the extra array object.
    existing = events[type] = listener;
    ++target._eventsCount;
  } else {
    if (typeof existing === 'function') {
      // Adding the second element, need to change to array.
      existing = events[type] =
        prepend ? [listener, existing] : [existing, listener];
      // If we've already got an array, just append.
    } else if (prepend) {
      existing.unshift(listener);
    } else {
      existing.push(listener);
    }

    // Check for listener leak
    m = _getMaxListeners(target);
    if (m > 0 && existing.length > m && !existing.warned) {
      existing.warned = true;
      // No error code for this since it is a Warning
      // eslint-disable-next-line no-restricted-syntax
      var w = new Error('Possible EventEmitter memory leak detected. ' +
                          existing.length + ' ' + String(type) + ' listeners ' +
                          'added. Use emitter.setMaxListeners() to ' +
                          'increase limit');
      w.name = 'MaxListenersExceededWarning';
      w.emitter = target;
      w.type = type;
      w.count = existing.length;
      ProcessEmitWarning(w);
    }
  }

  return target;
}

EventEmitter.prototype.addListener = function addListener(type, listener) {
  return _addListener(this, type, listener, false);
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.prependListener =
    function prependListener(type, listener) {
      return _addListener(this, type, listener, true);
    };

function onceWrapper() {
  if (!this.fired) {
    this.target.removeListener(this.type, this.wrapFn);
    this.fired = true;
    if (arguments.length === 0)
      return this.listener.call(this.target);
    return this.listener.apply(this.target, arguments);
  }
}

function _onceWrap(target, type, listener) {
  var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };
  var wrapped = onceWrapper.bind(state);
  wrapped.listener = listener;
  state.wrapFn = wrapped;
  return wrapped;
}

EventEmitter.prototype.once = function once(type, listener) {
  checkListener(listener);
  this.on(type, _onceWrap(this, type, listener));
  return this;
};

EventEmitter.prototype.prependOnceListener =
    function prependOnceListener(type, listener) {
      checkListener(listener);
      this.prependListener(type, _onceWrap(this, type, listener));
      return this;
    };

// Emits a 'removeListener' event if and only if the listener was removed.
EventEmitter.prototype.removeListener =
    function removeListener(type, listener) {
      var list, events, position, i, originalListener;

      checkListener(listener);

      events = this._events;
      if (events === undefined)
        return this;

      list = events[type];
      if (list === undefined)
        return this;

      if (list === listener || list.listener === listener) {
        if (--this._eventsCount === 0)
          this._events = Object.create(null);
        else {
          delete events[type];
          if (events.removeListener)
            this.emit('removeListener', type, list.listener || listener);
        }
      } else if (typeof list !== 'function') {
        position = -1;

        for (i = list.length - 1; i >= 0; i--) {
          if (list[i] === listener || list[i].listener === listener) {
            originalListener = list[i].listener;
            position = i;
            break;
          }
        }

        if (position < 0)
          return this;

        if (position === 0)
          list.shift();
        else {
          spliceOne(list, position);
        }

        if (list.length === 1)
          events[type] = list[0];

        if (events.removeListener !== undefined)
          this.emit('removeListener', type, originalListener || listener);
      }

      return this;
    };

EventEmitter.prototype.off = EventEmitter.prototype.removeListener;

EventEmitter.prototype.removeAllListeners =
    function removeAllListeners(type) {
      var listeners, events, i;

      events = this._events;
      if (events === undefined)
        return this;

      // not listening for removeListener, no need to emit
      if (events.removeListener === undefined) {
        if (arguments.length === 0) {
          this._events = Object.create(null);
          this._eventsCount = 0;
        } else if (events[type] !== undefined) {
          if (--this._eventsCount === 0)
            this._events = Object.create(null);
          else
            delete events[type];
        }
        return this;
      }

      // emit removeListener for all listeners on all events
      if (arguments.length === 0) {
        var keys = Object.keys(events);
        var key;
        for (i = 0; i < keys.length; ++i) {
          key = keys[i];
          if (key === 'removeListener') continue;
          this.removeAllListeners(key);
        }
        this.removeAllListeners('removeListener');
        this._events = Object.create(null);
        this._eventsCount = 0;
        return this;
      }

      listeners = events[type];

      if (typeof listeners === 'function') {
        this.removeListener(type, listeners);
      } else if (listeners !== undefined) {
        // LIFO order
        for (i = listeners.length - 1; i >= 0; i--) {
          this.removeListener(type, listeners[i]);
        }
      }

      return this;
    };

function _listeners(target, type, unwrap) {
  var events = target._events;

  if (events === undefined)
    return [];

  var evlistener = events[type];
  if (evlistener === undefined)
    return [];

  if (typeof evlistener === 'function')
    return unwrap ? [evlistener.listener || evlistener] : [evlistener];

  return unwrap ?
    unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
}

EventEmitter.prototype.listeners = function listeners(type) {
  return _listeners(this, type, true);
};

EventEmitter.prototype.rawListeners = function rawListeners(type) {
  return _listeners(this, type, false);
};

EventEmitter.listenerCount = function(emitter, type) {
  if (typeof emitter.listenerCount === 'function') {
    return emitter.listenerCount(type);
  } else {
    return listenerCount.call(emitter, type);
  }
};

EventEmitter.prototype.listenerCount = listenerCount;
function listenerCount(type) {
  var events = this._events;

  if (events !== undefined) {
    var evlistener = events[type];

    if (typeof evlistener === 'function') {
      return 1;
    } else if (evlistener !== undefined) {
      return evlistener.length;
    }
  }

  return 0;
}

EventEmitter.prototype.eventNames = function eventNames() {
  return this._eventsCount > 0 ? ReflectOwnKeys(this._events) : [];
};

function arrayClone(arr, n) {
  var copy = new Array(n);
  for (var i = 0; i < n; ++i)
    copy[i] = arr[i];
  return copy;
}

function spliceOne(list, index) {
  for (; index + 1 < list.length; index++)
    list[index] = list[index + 1];
  list.pop();
}

function unwrapListeners(arr) {
  var ret = new Array(arr.length);
  for (var i = 0; i < ret.length; ++i) {
    ret[i] = arr[i].listener || arr[i];
  }
  return ret;
}

function once(emitter, name) {
  return new Promise(function (resolve, reject) {
    function errorListener(err) {
      emitter.removeListener(name, resolver);
      reject(err);
    }

    function resolver() {
      if (typeof emitter.removeListener === 'function') {
        emitter.removeListener('error', errorListener);
      }
      resolve([].slice.call(arguments));
    };

    eventTargetAgnosticAddListener(emitter, name, resolver, { once: true });
    if (name !== 'error') {
      addErrorHandlerIfEventEmitter(emitter, errorListener, { once: true });
    }
  });
}

function addErrorHandlerIfEventEmitter(emitter, handler, flags) {
  if (typeof emitter.on === 'function') {
    eventTargetAgnosticAddListener(emitter, 'error', handler, flags);
  }
}

function eventTargetAgnosticAddListener(emitter, name, listener, flags) {
  if (typeof emitter.on === 'function') {
    if (flags.once) {
      emitter.once(name, listener);
    } else {
      emitter.on(name, listener);
    }
  } else if (typeof emitter.addEventListener === 'function') {
    // EventTarget does not have `error` event semantics like Node
    // EventEmitters, we do not listen for `error` events here.
    emitter.addEventListener(name, function wrapListener(arg) {
      // IE does not have builtin `{ once: true }` support so we
      // have to do it manually.
      if (flags.once) {
        emitter.removeEventListener(name, wrapListener);
      }
      listener(arg);
    });
  } else {
    throw new TypeError('The "emitter" argument must be of type EventEmitter. Received type ' + typeof emitter);
  }
}

},{}],2:[function(require,module,exports){
if (typeof Object.create === 'function') {
  // implementation from standard node.js 'util' module
  module.exports = function inherits(ctor, superCtor) {
    if (superCtor) {
      ctor.super_ = superCtor
      ctor.prototype = Object.create(superCtor.prototype, {
        constructor: {
          value: ctor,
          enumerable: false,
          writable: true,
          configurable: true
        }
      })
    }
  };
} else {
  // old school shim for old browsers
  module.exports = function inherits(ctor, superCtor) {
    if (superCtor) {
      ctor.super_ = superCtor
      var TempCtor = function () {}
      TempCtor.prototype = superCtor.prototype
      ctor.prototype = new TempCtor()
      ctor.prototype.constructor = ctor
    }
  }
}

},{}],3:[function(require,module,exports){
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r.slice(0,f)}))}function l(r,t){for(var e=0,a=0,n=0;n<t.length;n++)e+=Math.pow(n,r)*Math.abs(t[n]),a+=t[n];return e/a}function s(r){var t=r.ampSpectrum,e=r.barkScale,a=r.numberOfBarkBands,n=void 0===a?24:a;if("object"!=typeof t||"object"!=typeof e)throw new TypeError;var o=n,i=new Float32Array(o),u=0,f=t,c=new Int32Array(o+1);c[0]=0;for(var l=e[f.length-1]/o,s=1,m=0;m<f.length;m++)for(;e[m]>l;)c[s++]=m,l=s*e[f.length-1]/o;c[o]=f.length-1;for(m=0;m<o;m++){for(var p=0,h=c[m];h<c[m+1];h++)p+=f[h];i[m]=Math.pow(p,.23)}for(m=0;m<i.length;m++)u+=i[m];return{specific:i,total:u}}function m(r){var t=r.ampSpectrum;if("object"!=typeof t)throw new TypeError;for(var e=new Float32Array(t.length),a=0;a<e.length;a++)e[a]=Math.pow(t[a],2);return e}function p(r){var t=r.ampSpectrum,e=r.melFilterBank,a=r.bufferSize;if("object"!=typeof t)throw new TypeError("Valid ampSpectrum is required to generate melBands");if("object"!=typeof e)throw new TypeError("Valid melFilterBank is required to generate 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t=r.signal,e=r.previousSignal,a=r.bufferSize;if("object"!=typeof t||"object"!=typeof e)throw new TypeError;for(var n=0,o=-a/2;o<t.length/2-1;o++)x=Math.abs(t[o])-Math.abs(e[o]),n+=(x+Math.abs(x))/2;return n},spectralCrest:function(r){var t=r.ampSpectrum;if("object"!=typeof t)throw new TypeError;var e=0,a=-1/0;return t.forEach((function(r){e+=Math.pow(r,2),a=r>a?r:a})),e/=t.length,e=Math.sqrt(e),a/e},melBands:p});function S(r){if(Array.isArray(r)){for(var t=0,e=Array(r.length);t<r.length;t++)e[t]=r[t];return e}return Array.from(r)}var _={},b={},M={bitReverseArray:function(r){if(void 0===_[r]){for(var t=(r-1).toString(2).length,e="0".repeat(t),a={},n=0;n<r;n++){var o=n.toString(2);o=e.substr(o.length)+o,o=[].concat(S(o)).reverse().join(""),a[n]=parseInt(o,2)}_[r]=a}return 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n=M.bitReverseArray(e),o={real:[],imag:[]},i=0;i<e;i++)o.real[n[i]]=t.real[i],o.imag[n[i]]=t.imag[i];for(var u=0;u<e;u++)t.real[u]=o.real[u],t.imag[u]=o.imag[u];for(var f=1;f<=a;f++)for(var c=Math.pow(2,f),l=0;l<c/2;l++)for(var s=M.euler(l,c),m=0;m<e/c;m++){var p=c*m+l,h=c*m+l+c/2,g={real:t.real[p],imag:t.imag[p]},w={real:t.real[h],imag:t.imag[h]},v=M.multiply(s,w),d=M.subtract(g,v);t.real[h]=d.real,t.imag[h]=d.imag;var y=M.add(v,g);t.real[p]=y.real,t.imag[p]=y.imag}return t},A=F,E=function(){function r(r,t){var e=this;if(this._m=t,!r.audioContext)throw this._m.errors.noAC;if(r.bufferSize&&!a(r.bufferSize))throw this._m._errors.notPow2;if(!r.source)throw this._m._errors.noSource;this._m.audioContext=r.audioContext,this._m.bufferSize=r.bufferSize||this._m.bufferSize||256,this._m.hopSize=r.hopSize||this._m.hopSize||this._m.bufferSize,this._m.sampleRate=r.sampleRate||this._m.audioContext.sampleRate||44100,this._m.callback=r.callback,this._m.windowingFunction=r.windowingFunction||"hanning",this._m.featureExtractors=y,this._m.EXTRACTION_STARTED=r.startImmediately||!1,this._m.channel="number"==typeof r.channel?r.channel:0,this._m.inputs=r.inputs||1,this._m.outputs=r.outputs||1,this._m.numberOfMFCCCoefficients=r.numberOfMFCCCoefficients||this._m.numberOfMFCCCoefficients||13,this._m.numberOfBarkBands=r.numberOfBarkBands||this._m.numberOfBarkBands||24,this._m.spn=this._m.audioContext.createScriptProcessor(this._m.bufferSize,this._m.inputs,this._m.outputs),this._m.spn.connect(this._m.audioContext.destination),this._m._featuresToExtract=r.featureExtractors||[],this._m.barkScale=o(this._m.bufferSize,this._m.sampleRate,this._m.bufferSize),this._m.melFilterBank=f(Math.max(this._m.melBands,this._m.numberOfMFCCCoefficients),this._m.sampleRate,this._m.bufferSize),this._m.inputData=null,this._m.previousInputData=null,this._m.frame=null,this._m.previousFrame=null,this.setSource(r.source),this._m.spn.onaudioprocess=function(r){var t;null!==e._m.inputData&&(e._m.previousInputData=e._m.inputData),e._m.inputData=r.inputBuffer.getChannelData(e._m.channel),e._m.previousInputData?((t=new Float32Array(e._m.previousInputData.length+e._m.inputData.length-e._m.hopSize)).set(e._m.previousInputData.slice(e._m.hopSize)),t.set(e._m.inputData,e._m.previousInputData.length-e._m.hopSize)):t=e._m.inputData,function(r,t,e){if(r.length<t)throw new Error("Buffer is too short for frame length");if(e<1)throw new Error("Hop length cannot be less that 1");if(t<1)throw new Error("Frame length cannot be less that 1");var a=1+Math.floor((r.length-t)/e);return new Array(a).fill(0).map((function(a,n){return r.slice(n*e,n*e+t)}))}(t,e._m.bufferSize,e._m.hopSize).forEach((function(r){e._m.frame=r;var t=e._m.extract(e._m._featuresToExtract,e._m.frame,e._m.previousFrame);"function"==typeof e._m.callback&&e._m.EXTRACTION_STARTED&&e._m.callback(t),e._m.previousFrame=e._m.frame}))}}return r.prototype.start=function(r){this._m._featuresToExtract=r||this._m._featuresToExtract,this._m.EXTRACTION_STARTED=!0},r.prototype.stop=function(){this._m.EXTRACTION_STARTED=!1},r.prototype.setSource=function(r){this._m.source&&this._m.source.disconnect(this._m.spn),this._m.source=r,this._m.source.connect(this._m.spn)},r.prototype.setChannel=function(r){r<=this._m.inputs?this._m.channel=r:console.error("Channel ".concat(r," does not exist. Make sure you've provided a value for 'inputs' that is greater than ").concat(r," when instantiating the MeydaAnalyzer"))},r.prototype.get=function(r){return this._m.inputData?this._m.extract(r||this._m._featuresToExtract,this._m.inputData,this._m.previousInputData):null},r}(),C={audioContext:null,spn:null,bufferSize:512,sampleRate:44100,melBands:26,chromaBands:12,callback:null,windowingFunction:"hanning",featureExtractors:y,EXTRACTION_STARTED:!1,numberOfMFCCCoefficients:13,numberOfBarkBands:24,_featuresToExtract:[],windowing:n,_errors:{notPow2:new Error("Meyda: Buffer size must be a power of 2, e.g. 64 or 512"),featureUndef:new Error("Meyda: No features defined."),invalidFeatureFmt:new Error("Meyda: Invalid feature format"),invalidInput:new Error("Meyda: Invalid input."),noAC:new Error("Meyda: No AudioContext specified."),noSource:new Error("Meyda: No source node specified.")},createMeydaAnalyzer:function(r){return new E(r,Object.assign({},C))},listAvailableFeatureExtractors:function(){return Object.keys(this.featureExtractors)},extract:function(r,t,e){var n=this;if(!t)throw this._errors.invalidInput;if("object"!=typeof t)throw this._errors.invalidInput;if(!r)throw this._errors.featureUndef;if(!a(t.length))throw this._errors.notPow2;void 0!==this.barkScale&&this.barkScale.length==this.bufferSize||(this.barkScale=o(this.bufferSize,this.sampleRate,this.bufferSize)),void 0!==this.melFilterBank&&this.barkScale.length==this.bufferSize&&this.melFilterBank.length==this.melBands||(this.melFilterBank=f(Math.max(this.melBands,this.numberOfMFCCCoefficients),this.sampleRate,this.bufferSize)),void 0!==this.chromaFilterBank&&this.chromaFilterBank.length==this.chromaBands||(this.chromaFilterBank=c(this.chromaBands,this.sampleRate,this.bufferSize)),"buffer"in t&&void 0===t.buffer?this.signal=i(t):this.signal=t;var u=k(t,this.windowingFunction,this.bufferSize);if(this.signal=u.windowedSignal,this.complexSpectrum=u.complexSpectrum,this.ampSpectrum=u.ampSpectrum,e){var l=k(e,this.windowingFunction,this.bufferSize);this.previousSignal=l.windowedSignal,this.previousComplexSpectrum=l.complexSpectrum,this.previousAmpSpectrum=l.ampSpectrum}var s=function(r){return n.featureExtractors[r]({ampSpectrum:n.ampSpectrum,chromaFilterBank:n.chromaFilterBank,complexSpectrum:n.complexSpectrum,signal:n.signal,bufferSize:n.bufferSize,sampleRate:n.sampleRate,barkScale:n.barkScale,melFilterBank:n.melFilterBank,previousSignal:n.previousSignal,previousAmpSpectrum:n.previousAmpSpectrum,previousComplexSpectrum:n.previousComplexSpectrum,numberOfMFCCCoefficients:n.numberOfMFCCCoefficients,numberOfBarkBands:n.numberOfBarkBands})};if("object"==typeof r)return r.reduce((function(r,t){var e;return Object.assign({},r,((e={})[t]=s(t),e))}),{});if("string"==typeof r)return s(r);throw this._errors.invalidFeatureFmt}},k=function(r,t,e){var a={};void 0===r.buffer?a.signal=i(r):a.signal=r,a.windowedSignal=n(a.signal,t),a.complexSpectrum=A(a.windowedSignal),a.ampSpectrum=new Float32Array(e/2);for(var o=0;o<e/2;o++)a.ampSpectrum[o]=Math.sqrt(Math.pow(a.complexSpectrum.real[o],2)+Math.pow(a.complexSpectrum.imag[o],2));return a};return"undefined"!=typeof window&&(window.Meyda=C),C}));


},{}],4:[function(require,module,exports){
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      return (getNanoSeconds() - nodeLoadTime) / 1e6;
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      return hr[0] * 1e9 + hr[1];
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    module.exports = function() {
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    loadTime = new Date().getTime();
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}).call(this);



}).call(this)}).call(this,require('_process'))
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// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
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}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
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            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
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    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
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} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
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    // if setTimeout wasn't available but was latter defined
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        return setTimeout(fun, 0);
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    try {
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}
function runClearTimeout(marker) {
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        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
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    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
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            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
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    draining = false;
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        queueIndex = -1;
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    if (queue.length) {
        drainQueue();
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}

function drainQueue() {
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        return;
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    var timeout = runTimeout(cleanUpNextTick);
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    var len = queue.length;
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        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
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        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
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};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
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process.cwd = function () { return '/' };
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process.umask = function() { return 0; };

},{}],6:[function(require,module,exports){
var inherits = require('inherits')
var EventEmitter = require('events').EventEmitter
var now = require('right-now')
var raf = require('raf')

module.exports = Engine
function Engine(fn) {
    if (!(this instanceof Engine)) 
        return new Engine(fn)
    this.running = false
    this.last = now()
    this._frame = 0
    this._tick = this.tick.bind(this)

    if (fn)
        this.on('tick', fn)
}

inherits(Engine, EventEmitter)

Engine.prototype.start = function() {
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        return
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    this.last = now()
    this._frame = raf(this._tick)
    return this
}

Engine.prototype.stop = function() {
    this.running = false
    if (this._frame !== 0)
        raf.cancel(this._frame)
    this._frame = 0
    return this
}

Engine.prototype.tick = function() {
    this._frame = raf(this._tick)
    var time = now()
    var dt = time - this.last
    this.emit('tick', dt)
    this.last = time
}
},{"events":1,"inherits":2,"raf":7,"right-now":9}],7:[function(require,module,exports){
(function (global){(function (){
var now = require('performance-now')
  , root = typeof window === 'undefined' ? global : window
  , vendors = ['moz', 'webkit']
  , suffix = 'AnimationFrame'
  , raf = root['request' + suffix]
  , caf = root['cancel' + suffix] || root['cancelRequest' + suffix]

for(var i = 0; !raf && i < vendors.length; i++) {
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// Some versions of FF have rAF but not cAF
if(!raf || !caf) {
  var last = 0
    , id = 0
    , queue = []
    , frameDuration = 1000 / 60

  raf = function(callback) {
    if(queue.length === 0) {
      var _now = now()
        , next = Math.max(0, frameDuration - (_now - last))
      last = next + _now
      setTimeout(function() {
        var cp = queue.slice(0)
        // Clear queue here to prevent
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        // to the current frame's queue
        queue.length = 0
        for(var i = 0; i < cp.length; i++) {
          if(!cp[i].cancelled) {
            try{
              cp[i].callback(last)
            } catch(e) {
              setTimeout(function() { throw e }, 0)
            }
          }
        }
      }, Math.round(next))
    }
    queue.push({
      handle: ++id,
      callback: callback,
      cancelled: false
    })
    return id
  }

  caf = function(handle) {
    for(var i = 0; i < queue.length; i++) {
      if(queue[i].handle === handle) {
        queue[i].cancelled = true
      }
    }
  }
}

module.exports = function(fn) {
  // Wrap in a new function to prevent
  // `cancel` potentially being assigned
  // to the native rAF function
  return raf.call(root, fn)
}
module.exports.cancel = function() {
  caf.apply(root, arguments)
}
module.exports.polyfill = function(object) {
  if (!object) {
    object = root;
  }
  object.requestAnimationFrame = raf
  object.cancelAnimationFrame = caf
}

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