code: function() {
        var self = this || Howler;
  
        // Keeps track of the suspend/resume state of the AudioContext.
        self.state = self.ctx ? self.ctx.state || 'suspended' : 'suspended';
  
        // Automatically begin the 30-second suspend process
        self._autoSuspend();
  
        // Check if audio is available.
        if (!self.usingWebAudio) {
          // No audio is available on this system if noAudio is set to true.
          if (typeof Audio !== 'undefined') {
            try {
              var test = new Audio();
  
              // Check if the canplaythrough event is available.
              if (typeof test.oncanplaythrough === 'undefined') {
                self._canPlayEvent = 'canplay';
              }
            } catch(e) {
              self.noAudio = true;
            }
          } else {
            self.noAudio = true;
          }
        }
  
        // Test to make sure audio isn't disabled in Internet Explorer.
        try {
          var test = new Audio();
          if (test.muted) {
            self.noAudio = true;
          }
        } catch (e) {}
  
        // Check for supported codecs.
        if (!self.noAudio) {
          self._setupCodecs();
        }
  
        return self;
      }
docs: Setup various state values for global tracking.
  @return {Howler}