---
title: sourceMode
framework: avfaudio
role: symbol
role_heading: Instance Property
path: avfaudio/avaudio3dmixing/sourcemode
---

# sourceMode

The source mode for the input bus of the audio environment node.

## Declaration

```swift
var sourceMode: AVAudio3DMixingSourceMode { get set }
```

## See Also

### Getting the 3D Mixing Parameters

- [obstruction](avfaudio/avaudio3dmixing/obstruction.md)
- [occlusion](avfaudio/avaudio3dmixing/occlusion.md)
- [position](avfaudio/avaudio3dmixing/position.md)
- [rate](avfaudio/avaudio3dmixing/rate.md)
- [pointSourceInHeadMode](avfaudio/avaudio3dmixing/pointsourceinheadmode.md)
- [reverbBlend](avfaudio/avaudio3dmixing/reverbblend.md)