You can steal the voice of somebody like Lester Holt or Tanaka Rie with about 20 hours of audio where you manually splice segments to compose sound. Sometimes you can lift a sentence, sometimes you compose paired phonemes. It is a lot of work, but it has been possible long before deepfakes.
No matter what you will need to listen to the voice and give feedback, pro narrators have directors just as actors do and it is what makes them sound so good.
You can steal the voice of somebody like Lester Holt or Tanaka Rie with about 20 hours of audio where you manually splice segments to compose sound. Sometimes you can lift a sentence, sometimes you compose paired phonemes. It is a lot of work, but it has been possible long before deepfakes.
No matter what you will need to listen to the voice and give feedback, pro narrators have directors just as actors do and it is what makes them sound so good.