anchor.diff:                      }
                       event.hypList = hypList;
                       event.utterance_key = utterance_key;
  +                    event.speech_start_timestamp = speech_start_timestamp;
                       utterance_key++;
                       stopRecording(true);
                       $.ajax({
  
positive.code:                 if (in_dialog && !window.tts.playing) {
                      startListening();
                  }
              };
  
              window.recognition.onresult = function (event) {
  
negative.code:         var got_error = false;
          var in_dialog = false;
          var utterance_key = 0;
          var speech_start_timestamp = 0;
  
          $(document).ready(function () {
              // check browser
  