How does Stephen Hawking talk?

Answer

As of 2014, Stephen Hawking speaks with the assistance of a computer-based communication program called EZ Keys. A cursor on his screen continuously scans across a keyboard, and Hawking can stop the cursor on a character by moving his cheek.

His cheek movements are detected by an infrared sensor mounted on his eyeglasses, and he can spell words one character at a time in this way. The use of this sensor is the only way that Hawking can interact with his computer. The EZ Keys program includes an auto-complete function that allows Hawking to type the first few letters of a word and then select possible words from a list. Once he has built a sentence on the screen, he sends it to a speech synthesizer that communicates his message audibly.

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Q&A Related to "How does Stephen Hawking talk?"
He is still able to move his cheek muscle. there is a sensor attached to his eyeglasses which detects light changes when he twitches his cheek. This is a binary input which works
http://wiki.answers.com/Q/How_does_Stephen_Hawking...
He uses a voice synthesizer called the DECTalk. ChaCha on!
http://www.chacha.com/question/how-does-stephen-ha...
He communicate with a computer system which is mounted on his wheel chair which has a program called Equalizer™, written by a company called Words Plus inc. A cursor moves across
http://answers.yahoo.com/question/index?qid=201203...
Here is a Wikipedia extract I think will answer your question: In Hawking's many media appearances, he appears to speak fluently through his synthesizer, but in reality, it is a tedious
http://www.quora.com/How-does-Stephen-Hawkings-voi...
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