---
title: isRunning
framework: avfaudio
role: symbol
role_heading: Instance Property
path: avfaudio/avaudioengine/isrunning
---

# isRunning

A Boolean value that indicates whether the audio engine is running.

## Declaration

```swift
var isRunning: Bool { get }
```

## Discussion

Discussion The value is true if the audio engine is in a running state; otherwise, false.

## See Also

### Playing Audio

- [prepare()](avfaudio/avaudioengine/prepare().md)
- [start()](avfaudio/avaudioengine/start().md)
- [pause()](avfaudio/avaudioengine/pause().md)
- [stop()](avfaudio/avaudioengine/stop().md)
- [reset()](avfaudio/avaudioengine/reset().md)
- [withMusicSequence(_:)](avfaudio/avaudioengine/withmusicsequence(_:).md)