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# AVAudio3DMixingSourceMode

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

```
enum AVAudio3DMixingSourceMode
```

## Overview

The source mode determines how the individual channels of an input bus distribute in space.

## Topics

### Source Modes

[`AVAudio3DMixingSourceMode.spatializeIfMono`](/documentation/AVFAudio/AVAudio3DMixingSourceMode/spatializeIfMono)

A mono input bus that renders as a point source at the location of the source node.

[`AVAudio3DMixingSourceMode.bypass`](/documentation/AVFAudio/AVAudio3DMixingSourceMode/bypass)

A mode that does no spatial rendering.

[`AVAudio3DMixingSourceMode.pointSource`](/documentation/AVFAudio/AVAudio3DMixingSourceMode/pointSource)

All channels of the bus render as a single source at the location of the source node.

[`AVAudio3DMixingSourceMode.ambienceBed`](/documentation/AVFAudio/AVAudio3DMixingSourceMode/ambienceBed)

The input channels spread around the listener as far-field sources that anchor to global space.


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