Saw your YouTube videos a few days ago and was very impressed.
Clearly you can't give away too much on your "secret sauce" but is there any insight you could share on two questions:
1. Do the individual voice talents need to express the emotion types you use or can you layer it on after? (ie do they have to have recorded say "happy" to get happy outputs or can that be added to neutral recordings retrospectively)
2. What are the ball park audio amounts you need per voice? 10 hrs, 20 hrs or more?