I guess I'm just interested in more information. Do people who aren't NASA have this working? I am just learning this sci-fi feature from Ender's universe is possibly a reality, and if I can check it out, I want to.
TBH, other than the NASA resources, I'm building it from scratch. Goal would be to record the signal while prompting a user to say/think a subset of words. Afterwards the HOPE is that I will be able to train a simple- functional- model based on those inputs.