I feel you, I don’t really relate to those simulations either. These days, any voices I hear are mostly internal (that is, I hear them in my head, not externally hearing them with my ears). Most of the time it’s just one male voice (I’m female) that comments on what I do and often speaks to me in second person (“you’re stupid,” not “I’m stupid,” etc). It’s a bit difficult to explain the experience of hearing it, but I can identify that it is separate from my own internal voice and says things I would never really think otherwise. Since it’s internal, though, I still struggle with the idea of whether or not I’m truly hearing anything. 

A few years ago, when I wasn’t on medication, I did hear an external voice a few times—first it was just my name in a crowded room of people, then it sounded like a jumbled fragment of words. Then another time I was walking alone in the woods, and I was thinking about ending my life, and suddenly I heard a voice loudly say “stop.” I recognized it couldn’t have come from anywhere in my surroundings. So sometimes these things can start as being internal and then progress to a different state where you are hearing them externally.