@christooshop, you need to check your facts. DECTalk started shipping in 1984, not 1975, and a little serious homework would inform you properly as to its internals and architecture, which I can assure you wasn't "4 bit".
The reason for his not having "upgraded" over the years was very simple: People had come to associate Hawking and that voice with each other, and he wanted to maintain that identification. So in later years, when he did upgrade to more modern hardware, he kept the old voice, which had really become his.
(That answers your question. I'll watch this doc shortly and add a proper review of it.)
The reason for his not having "upgraded" over the years was very simple: People had come to associate Hawking and that voice with each other, and he wanted to maintain that identification. So in later years, when he did upgrade to more modern hardware, he kept the old voice, which had really become his.
(That answers your question. I'll watch this doc shortly and add a proper review of it.)