---
title: kIOAudioEngineStreamFormatChangeNotification
framework: kernel
role: symbol
role_heading: Enumeration Case
path: kernel/ioaudioenginenotifications/kioaudioenginestreamformatchangenotification
---

# kIOAudioEngineStreamFormatChangeNotification

## Declaration

```occ
kIOAudioEngineStreamFormatChangeNotification = 1
```