# AUGraphAddNode(_:_:_:) Adds a node to an audio processing graph. ``` func AUGraphAddNode(_ inGraph: AUGraph, _ inDescription: UnsafePointer, _ outNode: UnsafeMutablePointer) -> OSStatus ``` ## Parameters `inGraph` The `AUGraph` object that you are adding a node to. `inDescription` The `AudioComponentDescription` object used to find and open the audio unit that you are adding as a new node. `outNode` The newly added node. ## Return Value A result code. ## Discussion Creates a node in an audio processing graph, using the supplied `AudioComponentDescription` object to find and open the audio unit for the node. --- 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)