My internal thoughts also seem to be expressed this way, though not necessarily all the time. Doubts or alternate viewpoints are often alternate voices and I can "hear" the arguments.
I can glance over text quite quickly to understand what it's saying, but can only "read" it is as fast as the voice can talk.
Typing prose is the same, even if I type text without looking at the screen the voice still speaks to me and I can only type as fast as it speaks.
I've typed full emails while talking to others, I can't imagine doing that while sub-vocalizing what I'm writing.
hello friend, I can do that too. 1 frame will tell me if I've seen something before, though it sometimes takes several more to get a title. I like to call it cinematic memory, it's like photographic memory but shittier because if I try to reconstruct a photographic memory it comes out blurry :v)
But I don't actually hear a voice when reading and hence no detectable accents or tone. However, if I try to remember a line from a movie or a visual, like a scene, I can actually hear and see it, as if temporarily my brain routes my memories through my visual and auditory path, and sometimes it's unsettling even though I'm expecting it. As for the visual, I seem to have two distinct sense of vision, one from my eyes, and the other one that is so called the "mind's eye". For me, it lacks color and even shades.
As for remembering things, I can instantly tell a movie by a single frame of it even if I've watched it once and I'm yet to come across someone who can do that.