==== AVS2_audio_descriptor

Defined by AVS in <<AVS-TAI-109.7>>.

[source,xml]
----
<AVS2_audio_descriptor
    num_channels="uint8, required"
    sample_rate_index="uint4, required"
    language="char3, optional"
    description="string, optional">

  <version_info
    audio_codec_id="uint4, required"
    coding_profile="basic|object, required"
    bitrate_index="uint4, optional (required if audio_codec_id=0)"
    bitstream_type="uniform|variable, optional (required if audio_codec_id=0)"
    raw_frame_length="uint16, optional (required if audio_codec_id=0)"
    resolution="8 bits|16 bits|24 bits, required">
  </version_info>

  <additional_info>
    Hexadecimal content
  </additional_info>

</AVS2_audio_descriptor>
----
