---
title: AVAudioNodeBus
framework: avfaudio
role: symbol
role_heading: Type Alias
path: avfaudio/avaudionodebus
---

# AVAudioNodeBus

The index of a bus on an audio node.

## Declaration

```swift
typealias AVAudioNodeBus = Int
```

## Discussion

Discussion An AVAudioNodeBus represents a bus as a zero-based index. AVAudioNode objects potentially have multiple input and output busses.

## See Also

### Configuring an Input Format Bus

- [inputFormat(forBus:)](avfaudio/avaudionode/inputformat(forbus:).md)
- [name(forInputBus:)](avfaudio/avaudionode/name(forinputbus:).md)
- [numberOfInputs](avfaudio/avaudionode/numberofinputs.md)