title: Request permission to automatically play an audio file
body: <p>I have a function in js that checks a variable date, and if it is present it starts an audio file.</p>
  
  <p>Since with the new privacy it is not possible to start an audio file automatically, in fact in my case it is blocked.
  I would like to have the broswer box appear to give consent to the reproduction of the audio file.</p>
  
  <p>But, I do not know how can I do it.
  Can you help me?</p>
  
  <pre><code>var audio = new Audio('/sound/file-one.mp3');
  
  setInterval(function() {
      $.ajax({
          url: '/check_data.php',
          type: 'post',
          data: {
              'check_data' : 1
          },
          success: function(response){
              if (response != "false") {
                  audio.addEventListener('ended', function () {
                      audio.play();
                  }, false);
                  audio.play();
              }
          }
      });
  }, 5000);
  </code></pre>