# AudioConfiguration
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Complex type specifying the stream’s audio configuration to be used by the encoder.

## Contents
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+ **live**
  + Audio-track configurations for the live stream.
  + Type: Array of [AudioTrackConfiguration](structures-AudioTrackConfiguration.md) objects
  + Required: Yes
+ **vod**
  + Audio-track configurations for video on demand. Returned only when audio-track configurations are requested for video on demand, by setting `vod_track_audio` to `true` in [PreferencesDescription](structures-PreferencesDescription.md).
  + Type: Array of [AudioTrackConfiguration](structures-AudioTrackConfiguration.md) objects
  + Required: No