Stephen Hawking has had the same trademark voice for 30 years and has now decided its time for a change. Watch him view the audition tapes from hopeful .<br><br>Renowned physicist Stephen Hawking is clearly tired of the Intel-designed machine that emits his words for him. So he has auditioned a range of celebrities from .<br>Main Channel ▻ Will from Afar is the best voice Sources: Interview: .<br>His computerised voice is recognisable all around the world. But Professor Stephen Hawking was filmed auditioning a host of A-listers for a new voice as part of .
