Fripp got it from Eno, when they did the Pussyfooting album together in the very early 70s.
https://happymag.tv/frippertronics/:
"In September of 1972, the pair met in Eno’s London home studio, where he had set up a tape system developed by avant-garde composers Terry Riley and Pauline Oliveros."
> Of course, in the hands of any creative musician, I think it would only take a week
Pretty much! Musique Concrète basically starts with the invention of magnetic tape. Electronic music itself basically starts with the vacuum tube.
Humans just really like making new sounds and music. If we invent any new tech that makes an odd noise, there will be a bunch of stoned grad students jamming with it later that day.