The following question asks basically the same thing but got no answers:
How can I sample an audio stream on iOS for visualization regardless of the audio source?
I'm completely new to iOS development, and I've had a rough time determining if this is even possible.
I managed to implement this for Android using the following: https://developer.android.com/reference/android/media/audiofx/Visualizer.html
This basically captures the ouput audio mix internally rather than from the microphone. It's perfect for what I'm doing.
Everything I've been reading so far about iOS is microphone-centric. Is it even possible to achieve similar functionality for iOS (specficially iPhone / iPad)?
