This service makes a digital voice that sounds like you from a small audio sample

Descript's Lyrebird is a premium service that "allows you to replace recorded words and phrases with synthesized speech that's tonally blended with the surrounding audio." The interactive samples on the website are amazing -- I can't tell the difference between the original voices and the synthetic voices. This could be useful for podcast editing, but also for deepfakes (or maybe not -- see update below).

Update 10/16/19 3:21pm PT: A spokesperson for Descript emailed me with some clarifications:

- Lyrebird AI is now a part of Descript -- and their voice double product is available in private beta as part of Descript's podcast editing software.

- The feature is called Overdub -- and a voice double to be used in overdub can only be made of your own voice, which is important for us to emphasize, as we take potential misuse seriously.