将录音保存在文件夹中

I am using this GitHub project to record some audio on a website, I want to save that file in a folder instead of displaying it on the website. https://github.com/addpipe/simple-web-audio-recorder-demo

The current version is creating a download link and displaying the audio clip on the website, I've attempted to send the data to PHP using AJAX.

    $.ajax({
      url: "uploadAudio.php",
      type: "POST",
      data: "audio", blob,
      processData: false,
      contentType: false,
      success: function(data){
        alert('success');
      }
    });

and the PHP code I tried to save it as a file

    <?php
    $dir = "uploads/";
    move_uploaded_file($_FILES["audio"]["tmp_name"], $dir. "name");
    ?>

Am I thinking along the right lines? have you got any suggestions for a better way of doing this?