I wonder if this is using the same audio format for the names of the 1997 Talk with me Barbie. There's a pretty good Tech Tangents video on it.

https://www.youtube.com/watch?v=Zbuol0AJ24A

Who recorded it and how long did it take? Weeks?

Yeah, I was expecting that the actual audio would just be a set of phonemes recorded at different intonations, and the game would chain them together.

The linked video that has every individual name lasts nearly 5 hours. It’s just insane.

https://www.youtube.com/watch?v=d_s7GL6ZdG4