---
title: performPowerStateChange
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/ioaudiodevice/1557035-performpowerstatechange
---

# performPowerStateChange

## Declaration

```occ
virtual IOReturn performPowerStateChange(IOAudioDevicePowerState oldPowerState, IOAudioDevicePowerState newPowerState, UInt32 *microsecondsUntilComplete);
```