---
title: AVCaptureAudioPreviewOutput
framework: avfoundation
role: symbol
role_heading: Class
path: avfoundation/avcaptureaudiopreviewoutput
---

# AVCaptureAudioPreviewOutput

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

## Declaration

```swift
class AVCaptureAudioPreviewOutput
```

## Topics

### Creating preview output

- [init()](avfoundation/avcaptureaudiopreviewoutput/init().md)

### Configuring the output

- [volume](avfoundation/avcaptureaudiopreviewoutput/volume.md)
- [outputDeviceUniqueID](avfoundation/avcaptureaudiopreviewoutput/outputdeviceuniqueid.md)

## Relationships

### Inherits From

- [AVCaptureOutput](avfoundation/avcaptureoutput.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)

## See Also

### Capture preview

- [AVCaptureVideoPreviewLayer](avfoundation/avcapturevideopreviewlayer.md)