That was Daphne Oram, who was a pioneer and all-round innovator. You can find her book online and it's a fascinating insight into a different cultural universe

That was Daphne Oram, who was a pioneer and all-round innovator. You can find her book online and it's a fascinating insight into a different cultural universe than the one we have today. But her Oramics system was more like an automation controller hand-painted onto film strip than optical waveform synthesis. It was a direct ancestor of the automation in all modern DAWs.