The data type for an audio unit element identifier.
- iOS 10.0+
- macOS 10.12+
- Mac Catalyst 13.0+
- tvOS 10.0+
An audio unit element is a discrete programmatic context that is nested within an audio unit scope (see
Audio). In the context of input and output scopes, elements serve as programmatic analogs of physical signal buses in hardware audio devices. Because of this analogy, the term “bus” is a common synonym for “element.”
Elements are zero indexed. The Global scope always has exactly one element—element 0.