A key point about this, whether here or in AI restoration of classic audio from yesteryear or indeed AI restoration to use in court as forensic audio or video…

A key point about this, whether here or in AI restoration of classic audio from yesteryear or indeed AI restoration to use in court as forensic audio or video… It ain't. It's made up, synthesized in a sophisticated way to become what is normally present in such a context. As such it is by definition fake and not reality, but a sort of consensus opinion of what usually goes into any given spot. You are not even approaching reality. You're approaching what is typically expected, synthesized to most plausibly fill in the gap. If there is some unusual detail in the original media, the restoration will read it as damage or a glitch, and will wrest it from you and force it into a more predictable form.