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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              %h1 Click your fingers
%img.t{:src => ''}
%img{:src => ''}
%img.hide{:src => ''}

              img {
    position: absolute;
    left: 0;
    right: 0;
    margin: auto;
    top: 50%;
    transform: translateY(-50%);

.t {
    z-index: 120;
    width: 50px;;
    display: none;
    top: 70px

h1 {
    position: absolute;
    z-index: 10;
    font-family: georgia;
    text-align: center;
    width: 100%;
                  var Recording = function(cb){
      var recorder = null;
      var recording = true;
      var audioInput = null;
      var volume = null;
      var audioContext = null;
      var callback = cb;
      navigator.getUserMedia = navigator.getUserMedia    || navigator.webkitGetUserMedia ||
                               navigator.mozGetUserMedia || navigator.msGetUserMedia;
          function(e){ //success
            var AudioContext = window.AudioContext || window.webkitAudioContext;
            audioContext = new AudioContext();
            volume = audioContext.createGain(); // creates a gain node
            audioInput = audioContext.createMediaStreamSource(e); // creates an audio node from the mic stream
            audioInput.connect(volume);// connect the stream to the gain node
            recorder = audioContext.createScriptProcessor(2048, 1, 1);
            recorder.onaudioprocess = function(e){
                if(!recording) return;
                var left = e.inputBuffer.getChannelData(0);
                //var right = e.inputBuffer.getChannelData(1);
                callback(new Float32Array(left));
            volume.connect(recorder);// connect the recorder
          function(e){ //failure
            alert('Error capturing audio.');
      } else {
        alert('getUserMedia not supported in this browser.');
    var lastClap = (new Date()).getTime();
    function detectClap(data){
      var t = (new Date()).getTime();
      if(t - lastClap < 200) return false; // TWEAK HERE
      var zeroCrossings = 0, highAmp = 0;
      for(var i = 1; i < data.length; i++){
        if(Math.abs(data[i]) > 0.25) highAmp++; // TWEAK HERE
        if(data[i] > 0 && data[i-1] < 0 || data[i] < 0 && data[i-1] > 0) zeroCrossings++;
      if(highAmp > 20 && zeroCrossings > 30){ // TWEAK HERE
        //console.log(highAmp+' / '+zeroCrossings);
        lastClap = t;
        return true;
      return false;
    var rec = new Recording(function(data){
            $('.hide, .t, h1').toggle();

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