CDM has ongoing coverage from the Mutek festival; see more dispatches at events.noisepages.com. Liz talks to A/V duo Rechenzentrum for CDM — and there’s a bit of a revelation at the end of the interview. -Ed.

Rechenzentrum, which means “data processing center” in German, is a Berlin-based duo who create live audio-visual performances by combining austere film visuals with their own brand of minimal techno, fusing elements of jazz, dub, and early industrial. Marc Wieser handles the music half while Lillevan navigates the visual landscape. Their 2003 DVD release Director’s Cut, originally out on Mille Plateaux, went on to win the Ars Electronica prize. Marc and Lillevan sat down with us after their sound check for A/Visions 2 at Mutek 2008.

Liz: What goes on in a live Rechenzentrum performance?

Lillevan: I do the video; Marc does the music. The video is live in the sense that I determine which image gets shown at which second, but obviously I’m not creating the image in real time because I’m not really interested in that. Real-time-created video usually looks pretty “blocky,” and I don’t really like it that much. It’s a mixture of pre-recorded video coming off a hard disk and live stuff reacting off of Marc’s music. But we’re not connected by any kind of MIDI connections or sound analysis. I just listen to his music and create stuff based on that. It’s a connection between our persons and not between our computers.

Marc Weiser: This way it’s improvised, for sure.