Sound alert in HTML

Question

I’m populating a table’s information with comic book data. I wonder if there is any way to check line by line that this coming and emit a beep just for the new lines within the conditions that I created.

Note that I have already created a warning condition, however, appears to everyone, until then everything right, but if I put the sound, it will play all the time, because the information will still be there. I want to make a if for each new line and disregard those that have already been checked.

I used the following line to make the sound:

<embed src="alert.mp3" width="1" height="1" type=""></embed>


<table class="table">
<tr>
  <td><b>valor1</b></td>
  <td><b>valor2</b></td>
  <td><b>valor3</b></td>
  <td><b>valor4</b></td>
  <td><b>valor5</b></td>
</tr>
<?php 
foreach ($read as $key => $value) {
  $lista = $value['obs'];
  ?>
  <tr <?php if($lista == "teste"){echo 'class="table-danger"';} ?>>
    <td><?php echo $value['valor1']; ?></td>
    <td><img width="150" src="data:image/jpeg;base64, <?php echo $value['valor2']; ?>" /></td>
    <td><?php echo date('d/m/Y H:i:s', strtotime($value['valor2'])); ?></td>
    <td><?php echo $value['valor4']; ?></td>
    <td><?php echo $value['valor5']; ?></td>
  </tr>
<?php } ?>