User Testing with multiple AI Voice and sound software:
Tested multiple AI tools to generate 3D historical figures from text, image, video, and voice. Voice cloning (using ElevenLabs) was the most challenging, especially for lesser-known figures, with limited audio references like I tested, on Rabbi Joseph B. Soloveitchik.
He had an Eastern European accent mixed with American as he lived several years in New York. I wanted to create an answer to my question for him based on how he would most likely respond and in an accent as close to his as possible.
I downloaded snippets of his voice online
I then uploaded it to Elevenlabs and synced it with a polish accent of an older man to try get his accent.
I Improved output by editing background noise for cleaner, more accurate replication.

User testing with multiple visual (video) editing software:
I tested different prompts on leonardo AI and trained models to try to get it as close as possible to the original historical figure
MUST HAVE KEY PROMPTS:
Front Facing Angle of camera should be facing camera to get a higher quality image
Realistic quality I tested skin textures and used prompts of skin textures and pores to show human like skin quality
Test on different models Some models work better than others for realistic human photography. I tested and trained different models until I got a result that were most accurate.
User Testing for image using the model 4.0 of chatGPT and video with lip-sync using Runway AI:
I tested different lip syncing models to match the text I wanted to create the final step.

Visual generation on chatGPT Vs. Leonardo AI: Prompts were far less detailed on chatGPT and in some cases, more accurate, on well known figures, where there is presumably more visual data available online.
