Is there any way to access resources such as audio files after unity iOS build with swift in Xcode?

Greetings. I'm research student currently working on audio deep learning project. I'm making a unity app that applies audio deep learning algorithms using coreML. My programs flows like below. Unity app -> Send audio file to coreML algorithm (swift + objc) -> Save processed audio file (or files) and send it back to Unity app -> Play in Unity app It seems like I cannot access the resources used in unity project directly once it's build as Xcode project because of compression or etc. Is there any way to access resources such as audio files after unity iOS build with swift in Xcode? Thanks in advance