---
title: AudioOutputUnitStopProc
framework: audiotoolbox
role: symbol
role_heading: Type Alias
path: audiotoolbox/audiooutputunitstopproc
---

# AudioOutputUnitStopProc

## Declaration

```swift
typealias AudioOutputUnitStopProc = (UnsafeMutableRawPointer) -> OSStatus
```

## See Also

### Starting and Stopping Output

- [AudioOutputUnitStart(_:)](audiotoolbox/audiooutputunitstart(_:).md)
- [AudioOutputUnitStop(_:)](audiotoolbox/audiooutputunitstop(_:).md)
- [AudioOutputUnitStartProc](audiotoolbox/audiooutputunitstartproc.md)