---
title: AudioUnitNodeConnection
framework: audiotoolbox
role: symbol
role_heading: Structure
path: audiotoolbox/audiounitnodeconnection
---

# AudioUnitNodeConnection

A connection between two node objects in an audio processing graph.

## Declaration

```swift
struct AudioUnitNodeConnection
```

## Topics

### Initializers

- [init()](audiotoolbox/audiounitnodeconnection/init().md)
- [init(sourceNode:sourceOutputNumber:destNode:destInputNumber:)](audiotoolbox/audiounitnodeconnection/init(sourcenode:sourceoutputnumber:destnode:destinputnumber:).md)

### Instance Properties

- [destInputNumber](audiotoolbox/audiounitnodeconnection/destinputnumber.md)
- [destNode](audiotoolbox/audiounitnodeconnection/destnode.md)
- [sourceNode](audiotoolbox/audiounitnodeconnection/sourcenode.md)
- [sourceOutputNumber](audiotoolbox/audiounitnodeconnection/sourceoutputnumber.md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Sendable](swift/sendable.md)

## See Also

### Data Types

- [AUGraph](audiotoolbox/augraph.md)
- [AUNode](audiotoolbox/aunode.md)
- [AUNodeInteraction](audiotoolbox/aunodeinteraction.md)
- [AUNodeRenderCallback](audiotoolbox/aunoderendercallback.md)