---
title: finalize
framework: mediatoolbox
role: symbol
role_heading: Instance Property
path: mediatoolbox/mtaudioprocessingtapcallbacks/finalize
---

# finalize

A callback to perform any necessary cleanup.

## Declaration

```swift
var finalize: MTAudioProcessingTapFinalizeCallback?
```

## Discussion

Discussion The system invokes this callback only once when the MTAudioProcessingTap object is finalized. This field can be NULL.

## See Also

### Fields

- [version](mediatoolbox/mtaudioprocessingtapcallbacks/version.md)
- [clientInfo](mediatoolbox/mtaudioprocessingtapcallbacks/clientinfo.md)
- [init](mediatoolbox/mtaudioprocessingtapcallbacks/init.md)
- [prepare](mediatoolbox/mtaudioprocessingtapcallbacks/prepare.md)
- [unprepare](mediatoolbox/mtaudioprocessingtapcallbacks/unprepare.md)
- [process](mediatoolbox/mtaudioprocessingtapcallbacks/process.md)