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# AVAudioSession.InterruptionReason

Constants that define the reasons for an audio session interruption.

```
enum InterruptionReason
```

## Topics

### Interruption Reasons

[`AVAudioSession.InterruptionReason.default`](/documentation/AVFAudio/AVAudioSession/InterruptionReason/default)

The system interrupts this audio session when it activates another.

[`AVAudioSession.InterruptionReason.builtInMicMuted`](/documentation/AVFAudio/AVAudioSession/InterruptionReason/builtInMicMuted)

The system interrupts the audio session when the device mutes the built-in microphone.

[`AVAudioSession.InterruptionReason.routeDisconnected`](/documentation/AVFAudio/AVAudioSession/InterruptionReason/routeDisconnected)

The system interrupts the audio session due to a disconnection of an audio route.

[`AVAudioSession.InterruptionReason.sceneWasBackgrounded`](/documentation/AVFAudio/AVAudioSession/InterruptionReason/sceneWasBackgrounded)

The system backgrounds the scene and interrupts the audio session.

[`AVAudioSessionInterruptionReasonDeviceUnauthenticated`](/documentation/AVFAudio/AVAudioSessionInterruptionReason/AVAudioSessionInterruptionReasonDeviceUnauthenticated)

[`AVAudioSession.InterruptionReason.appWasSuspended`](/documentation/AVFAudio/AVAudioSession/InterruptionReason/appWasSuspended)

The system suspends the app and interrupts the audio session.


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