I'm teaching myself CoreAudio programming on the Mac (I have a need).
Sometimes the documentation refers to a .h file. Can those files be viewed in Xcode? If so, how do I find them?
For example the help page for AudioUnitParameter says this in the Overview:
This data structure is used by functions declared in the AudioToolbox/AudioUnitUtilities.h header file in macOS.
You can use the Open Quickly feature of Xcode to search for the header file by name. See Open a file containing a symbol.