---
title: AVCaptureMultichannelAudioMode.firstOrderAmbisonics
framework: avfoundation
role: symbol
role_heading: Case
path: avfoundation/avcapturemultichannelaudiomode/firstorderambisonics
---

# AVCaptureMultichannelAudioMode.firstOrderAmbisonics

An audio mode that indicates the recording uses first-order ambisonics.

## Declaration

```swift
case firstOrderAmbisonics
```

## Discussion

Discussion When recording a QuickTime movie file, the system records a stereo audio track with the first-order ambisonics track for backward playback compatibility.

## See Also

### Modes

- [AVCaptureMultichannelAudioMode.none](avfoundation/avcapturemultichannelaudiomode/none.md)
- [AVCaptureMultichannelAudioMode.stereo](avfoundation/avcapturemultichannelaudiomode/stereo.md)