I can have both and having it feel "like the hallucination is resonating throughout my skull" is a good way of describing it. I remember thinking about something and then I would hear someone repeat a word or sentence in my head in a weird voice and I can feel it inside my head. Not my voice but someone of any age, gender, volume, etc. Recently I had a hypnagogic internal voice hallucination as I was falling asleep (I get these 50%+ of the time) where a girl told me to "Get off the ground" which I felt inside my head at medium volume..