It doesn't matter if the voice is a perfect facsimile — it only matters whether a court can be persuaded that the result is derivative. As the article notes, t

It doesn't matter if the voice is a perfect facsimile — it only matters whether a court can be persuaded that the result is derivative. As the article notes, the AI doesn't even have to be trained on Greene's voice for him to have a case. > Grimmelmann said Greene doesn’t necessarily have to show definitively that Google trained NotebookLM on his voice to have a case, or even that the voice is 100 percent identical to his. He cited a 1988 case in which the singer and actress Bette Midler successfully sued Ford Motor Company over a commercial that used a voice actor to mimic her distinctive mezzo-soprano. But Greene would then have to show that enough listeners assume it’s Greene’s voice for it to affect either his reputation or his own opportunities to capitalize on it.