I've heard rumblings that AUGraph is being deprecated on iOS, for example in this Twitter post:
@marcoarment Your comment on @atpfm about needing to rewrite your audio engine: b/c of the looming AUGraph deprecation, or something else?
Is AUGraph in fact being deprecated, and if so, when? Can somebody point me toward an official Apple document or announcement that clarifies this?
Indeed it will be deprecated as stated in the WWDC talk
(Note: The picture is from the core audio mailing list)
来源：https://stackoverflow.com/questions/44952582/is-augraph-being-deprecated-on-ios-if-so-when