---
title: kIOAudioEngineRunning
framework: IOKit
role: symbol
role_heading: Enumeration Case
platforms: [Mac Catalyst 13.0+, macOS 10.1+]
path: iokit/ioaudioenginestate/kioaudioenginerunning
---

# kIOAudioEngineRunning

## Declaration

```occ
kIOAudioEngineRunning = 1
```

## Discussion

Discussion The IOAudioEngine is currently running - it is transferring data to or from the device.