@jentrification Its not his voice anymore, just as an impresionist doing is voice is legal even though he may have learned to do so off of a copyrighted audiobook.
The issue here to me isnt that an AI replicated his voice. It is more about how the AI may be designed... I would say if there is bit-for-bit replication in the output correlating to the original learned, even if its small segments, then there is a violation.