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# session(_:didOutputAudioSampleBuffer:)

Tells the delegate that a new sample buffer of recorded audio is available.

```
optional func session(_ session: ARSession, didOutputAudioSampleBuffer audioSampleBuffer: CMSampleBuffer)
```

## Parameters

`session`

The session providing information.

`audioSampleBuffer`

The sample buffer that was output.

## Discussion

ARKit calls this method on your delegate object only if you’re running an AR session with a configuration whose  [`providesAudioData`](/documentation/ARKit/ARConfiguration/providesAudioData) setting is <doc://com.apple.documentation/documentation/Swift/true>.

---

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