<!--
{
  "availability" : [
    "macOS: 10.7.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "AVFoundation",
  "identifier" : "/documentation/AVFoundation/AVCaptureAudioPreviewOutput",
  "metadataVersion" : "0.1.0",
  "role" : "Class",
  "symbol" : {
    "kind" : "Class",
    "modules" : [
      "AVFoundation"
    ],
    "preciseIdentifier" : "c:objc(cs)AVCaptureAudioPreviewOutput"
  },
  "title" : "AVCaptureAudioPreviewOutput"
}
-->

# AVCaptureAudioPreviewOutput

A capture output that provides a preview of the captured audio.

```
class AVCaptureAudioPreviewOutput
```

## Topics

### Creating preview output

[`new`](/documentation/AVFoundation/AVCaptureAudioPreviewOutput/new)

Returns a new audio preview output object.

[`init()`](/documentation/AVFoundation/AVCaptureAudioPreviewOutput/init())

Creates an audio preview output object.

### Configuring the output

[`volume`](/documentation/AVFoundation/AVCaptureAudioPreviewOutput/volume)

The output volume of the audio preview.

[`outputDeviceUniqueID`](/documentation/AVFoundation/AVCaptureAudioPreviewOutput/outputDeviceUniqueID)

The unique identifier of the Core Audio output device to use for audio preview.


---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)