Luke Dormehl and how Stephen Hawking got his voice back:
After developing ALS in the 1960s, Hawking’s physical capabilities slowly worsened until, by the late 1970s, he was barely able to speak… [in 1984] an MIT engineer named Dennis Klatt created a synthesized voice for Hawking to use. Using a program called Equalizer and a Speech Plus synthesizer, Hawking could select words and commands that would then be spoken out loud. The first version of the program ran on an Apple II, Cupertino’s most popular computer at the time. It gave Hawking the ability to “speak” at 15 words per minute.