AudioKit is an audio synthesis, processing, and analysis platform for iOS, macOS (including Catalyst), and tvOS.
To add AudioKit to your Xcode project, select File -> Swift Packages -> Add Package Depedency. Enter
https://github.com/AudioKit/AudioKit for the URL. You can define which version range you want, or which branch to use, or even which exact commit you would like use.
The AudioKit Cookbook contains many recipes for simple uses for AudioKit components.