# \<desc>

## \<desc> <a href="#desc" id="desc"></a>

Provides a description of a non-speech audio source in `<audio>`.

### Attributes

None

### Notes

None

### Example

```markup
<?xml version="1.0"?>
<vxml version="2.0">
  <form>
    <block>
      <prompt>
        I'm going to play an audio file.
      </prompt>
      <audio src="http://nonexistent.domain.com/test.wav">
        Oops, the audio file could not be retrieved!
        <desc>
        If the wave file at the location specified by the "src" attribute can not be retrieved, 
        the text within the "audio" tag will be read by the TTS engine.
        </desc>
      </audio>
    </block>
  </form>
</vxml>
```

The output of the above script would be:

> Computer: I'm going to play an audio file.\
> Computer: (plays audio file if available)

### Child Tags

None

### Parent Tags

[\<audio>](/dev/voicexml/tags/audio-tag.md)


---

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