The question is
TeX-specific, and I believe could be of interest to many
TeX users, but indeed no speech recognition engine I am aware of is
TeX specific. Does that make the question off-topic?
No they are not. We have some happy-trigger people who likes to see only what they want to see. And they vote to close on practically anything ignoring our long-lost grace period and wait-for-a-reply habits.
That's how five people who have nothing else to do, can alienate users from once-known as a friendly place in the name of almost a hundred active answerers for a handful stupid colored dots and rep points next to their avatars.
I guess I should join the well I'm not hanging out here anymore gang soon.
I must admit, that I was one of close-voters (but not the initiating one) and I voted to leave it closed, so I am one of the bad guys ;-)
The question itself is nice and very intriguing to have some software that recognizes speech and transforms it into LaTeX commands, as the OP requested.
However it's a question that is very peripherally connected to LaTeX/TeX itself since the OP misses features in software basically nobody can contribute to, contrary to the fact that basically one of the LaTeX core developpers and package authors contribute to LaTeX/TeX or provide support to LaTeX code generators (which does not seem to be case for Dragon NaturallySpeaking software), so I hold the question, unfortunately enough, for off-topic, although the background is quite nice and justified with the accessibility tag as Barbara Beeton suggested in her comment.
Franck, I hope you're not too disappointed about this and stay at our community nevertheless.