There are half a dozen startups in this space that provide the tech. They use embedded style tokens or sliders to change the emotion, pitch, timbre, etc. I don't have links off hand, but they're not too difficult to find.
These companies tend to focus on off-the-shelf turnkey solutions, so they'll have a suite of a few voice actors to choose from for different character archetypes.
These companies tend to focus on off-the-shelf turnkey solutions, so they'll have a suite of a few voice actors to choose from for different character archetypes.