setupPanner = function(sound, type) {
    type = type || 'spatial';

    // Create the new panner node.
    if (type === 'spatial') {
      sound._panner = Howler.ctx.createPanner();
      sound._panner.coneInnerAngle = sound._pannerAttr.coneInnerAngle;
      sound._panner.coneOuterAngle = sound._pannerAttr.coneOuterAngle;
      sound._panner.coneOuterGain = sound._pannerAttr.coneOuterGain;
      sound._panner.distanceModel = sound._pannerAttr.distanceModel;
      sound._panner.maxDistance = sound._pannerAttr.maxDistance;
      sound._panner.refDistance = sound._pannerAttr.refDistance;
      sound._panner.rolloffFactor = sound._pannerAttr.rolloffFactor;
      sound._panner.panningModel = sound._pannerAttr.panningModel;

      if (typeof sound._panner.positionX !== 'undefined') {
        sound._panner.positionX.setValueAtTime(sound._pos[0], Howler.ctx.currentTime);
        sound._panner.positionY.setValueAtTime(sound._pos[1], Howler.ctx.currentTime);
        sound._panner.positionZ.setValueAtTime(sound._pos[2], Howler.ctx.currentTime);
      } else {
        sound._panner.setPosition(sound._pos[0], sound._pos[1], sound._pos[2]);
      }

      if (typeof sound._panner.orientationX !== 'undefined') {
        sound._panner.orientationX.setValueAtTime(sound._orientation[0], Howler.ctx.currentTime);
        sound._panner.orientationY.setValueAtTime(sound._orientation[1], Howler.ctx.currentTime);
        sound._panner.orientationZ.setValueAtTime(sound._orientation[2], Howler.ctx.currentTime);
      } else {
        sound._panner.setOrientation(sound._orientation[0], sound._orientation[1], sound._orientation[2]);
      }
    } else {
      sound._panner = Howler.ctx.createStereoPanner();
      sound._panner.pan.setValueAtTime(sound._stereo, Howler.ctx.currentTime);
    }

    sound._panner.connect(sound._node);

    // Update the connections.
    if (!sound._paused) {
      sound._parent.pause(sound._id, true).play(sound._id, true);
    }
  }
Create a new panner node and save it on the sound.
@param  {Sound} sound Specific sound to setup panning on.
@param {String} type Type of panner to create: 'stereo' or 'spatial'.