---
title: isRunning
framework: Core Audio
role: symbol
role_heading: Instance Property
platforms: [macOS 15.0+]
path: coreaudio/audiohardwareprocess/isrunning
---

# isRunning

A Bool where a value of true indicates that there is audio IO in progress in the process.

## Declaration

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

## Discussion

Discussion Note that audio IO may be in progress even if no input or output streams are active.