docs: function SoundMeter(context) {
    this.context = context;
    this.instant = 0.0;
    this.slow = 0.0;
    this.clip = 0.0;
    this.script = context.createScriptProcessor(2048, 1, 1);
    var that = this;
    this.script.onaudioprocess = function(event) {
      var input = event.inputBuffer.getChannelData(0);
      var i;
      var sum = 0.0;
      var clipcount = 0;
      for (i = 0; i < input.length; ++i) {
        sum += input[i] * input[i];
        if (Math.abs(input[i]) > 0.99) {
          clipcount += 1;
        }
      }
      that.instant = Math.sqrt(sum / input.length);
      that.slow = 0.95 * that.slow + 0.05 * that.instant;
      that.clip = clipcount / input.length;
    };
  }