Hi PFM,

Our core hears 'white noise'. Whether its because she refuses to listen to what is being said, or because she hears more than what I do, I'm not sure, but she describes it to our T as 'white noise', like when a radio station or tv channel isn't tuned in. I guess it could be like your 'static'. I hear voices of the others and sounds of my thoughts inside my head. I also hear other things but it might be triggering so wont discuss. PM me if you wish. But one of our teens hears angels outside her head, nearly always in the right ear. I don't hear what they say, so again I have to wait till she tells T what is said.
I have had MRI and ear drum and inner ear and canal checks (on our request as part of our DID denial), am not on any meds, and due to the constant goings on in our head we rarely have tv or radio on. There's enough noise going on already!!
I don't have the answer for your schizophrenia/DID question, but thought I'd share so hopefully you wont feel so alone.
if ok,
kp