---
title: "outputFormat(forBus:)"
framework: avfaudio
role: symbol
role_heading: Instance Method
path: "avfaudio/avaudionode/outputformat(forbus:)"
---

# outputFormat(forBus:)

Retrieves the output format for the bus you specify.

## Declaration

```swift
func outputFormat(forBus bus: AVAudioNodeBus) -> AVAudioFormat
```

## Parameters

- `bus`: An audio node bus.

## Return Value

Return Value An AVAudioFormat instance that represents the output format of the bus.

## See Also

### Creating an Output Format Bus

- [name(forOutputBus:)](avfaudio/avaudionode/name(foroutputbus:).md)
- [numberOfOutputs](avfaudio/avaudionode/numberofoutputs.md)