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# Factorio Prototype Docs Version 2.0.77

# ProcessionAudioUsage - Prototype Docs

## ProcessionAudioUsage :: union

Who will hear ProcessionAudioEvent.

#### Union members

`"both"` | The player inside a pod and an outside viewer.
`"passenger"` | Only the player inside a pod.
`"outside"` | Only an outside viewer.

Type used in

- ProcessionAudioEvent::usage