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# AVCaptureAudioDataOutputSampleBufferDelegate

Methods for receiving audio sample data from an audio capture.

```
protocol AVCaptureAudioDataOutputSampleBufferDelegate : NSObjectProtocol
```

## Overview

This protocol defines an interface for delegates of an [`AVCaptureAudioDataOutput`](/documentation/AVFoundation/AVCaptureAudioDataOutput) object to receive captured audio sample buffers.

The delegate of an [`AVCaptureAudioDataOutput`](/documentation/AVFoundation/AVCaptureAudioDataOutput) object must adopt this protocol. The method in this protocol is optional.

## Topics

### Managing sample buffer behavior

[`captureOutput(_:didOutput:from:)`](/documentation/AVFoundation/AVCaptureAudioDataOutputSampleBufferDelegate/captureOutput(_:didOutput:from:))

Notifies the delegate that a sample buffer was written.


---

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