https://phys.org/news/2018-06-radio-regains-voice-technology.html

But being unable to speak was not just a problem in his profession; it affected every area of his life.

Now, with the help of technology, he can "speak" again. CereProc, a Scottish company that creates text-to-speech technology, has crafted a new voice for Dupree: software that turns his typed sentences into spoken words.