With my iPhone 11, iOS 17.5.1, would it be possible to pass the output of GarageBand off as my input mic device? The purpose is for calls.
A similar question was posted here 4 years ago (How can I use the output sound from GarageBand as my 'mic' for Skype or similar?), yet it doesn’t follow my need as I would like to use only my iPhone, or a laptop to set something up, but nothing that is needed always or it would be pointless.
I understand that it might not be possible to split/redirect the input and output like this, however, my bluetooth earbuds (I don't have to use the earbuds when calling) use the default device built-in. Knowledge of/method to use any external app or technology to change the way the iPhone processes the audio would be much appreciated. I found an app called iEavesdrop by Dennis Nederlof (https://apps.apple.com/app/id541418268), which almost achieves my purpose, but I cannot choose the GarageBand output as the input. Thank you.
