# AudioHardwareCreateAggregateDevice(_:_:) ``` func AudioHardwareCreateAggregateDevice(_ inDescription: CFDictionary, _ outDeviceID: UnsafeMutablePointer) -> OSStatus ``` ## Parameters `inDescription` The CFDictionary that specifies how to build the AudioAggregateDevice. The supported keys are described in the AudioAggregateDevice Constants section. `outDeviceID` The AudioObjectID of the newly created AudioAggregateDevice. ## Return Value An OSStatus indicating success or failure. ## Discussion \abstract This routine creates a new AudioAggregateDevice using the provided description. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)