but first, nick kwek has been looking at how peter 2.0 has been realised. today, i'm in the scottish capital of edinburgh, a city with a rich history of storytelling, where novel ideas come to life and the art of discourse has been mastered. i'm here to meet the engineers putting personality into synthetic voice. voice is part of what we are, it's part of our souls, it's the way we communicate, it betrays where we are from, our emotions, our motives, everything. dr matthew aylett and his team have been banking peter's voice so that peter can continue to talk now it is gone. he had to have his vocal track removed, so before that happened, we recorded him extensively and then we were able to recreate his voice in a speech synthesis system so he can now type in text and it will speak exactly the way that he used to speak. text—to—speech technology has been around for a while.