Implement this protocol to create a version 3 audio unit.
Mac Catalyst 13.0+Beta
In most cases, if your audio unit specifies parameters to configure its behavior, it should provide a custom user interface to control those parameters. You create this user interface by subclassing the AUViewController class and implementing this protocol on your subclass.
If your audio unit does not provide a custom user interface, subclass the NSObject class instead. In this case, the hosting app must create a generic user interface for your audio unit.
An AUParameterTree object is a top-level group node, representing all of an audio unit’s parameters. An audio unit’s parameters are organized into a tree containing groups and parameters (groups may be nested).
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.