The bulk of the sounds were sourced from a modular synth rack, only exception being one or two field recorded samples, some bits from mass media, found stuff, tiny parts from traditional instruments.
The rest came from using a Digital Audio Workstation (DAW, I use Reaper on Ubuntu Linux) on the computer, with many homemade plugins. A lot of the material coming from the modular had been treated by home-grown software, a couple of Daisy Seed-based modules.