I wonder if anybody knows who he was?
There were two all so dominant and major influences on German electronic music in the 70s/80s, and both projected their infpuence far beyond Germany and internationally, too. The one was Kraftwerk, the other was Tangerine Dream. And Edgar Froese was the founder of Tangerine Dream.
That band had an influence on my musical taste in my youth more than Kraftwerk. Vangelis, Tangerine Dream, Jarre - pioneers in what they were doing, hard to overestimate their importance. Well, we all do not become younger. Froese was 70.