Tag Archives: MIDI


As visitors probe a dictionary database, with each newly found word a frame is erased from a series of monkey clips and replaced with a solid colour. 51600 words – 51600 frames – 51600 colours, a price for every 1000th word found. Words spoken by speech synthesis, artist in gorilla costume explaining concepts, handing out prices. [more]


Computer aided score generation of Balinesian Gender Wayang music, based on multi-channel envelope recordings. The recording system required a custom acquisition system as multi-channel audio interfaces were not available in the early 1990s. It was implemented by Thomas Ruoff and Pierre Dutilleux at FH and ZKM, Karlsruhe. I was involved in the later stages that dealt with the analysis of the accumulated data. Most of this was done in Matlab and its signal processing toolbox. Finally, a custom notation system was devised to take the specific playing styles into account.


The Topophonien project marks the point at which I turned my hobby of building music-related electronics into a job. Prior to this I had mostly tinkered with various guitar effect circuits, so when Sabine Schäfer approached me in 1990 with a request if I could build her a computer controlled spatialization mixer this was a rather tall order. Starting with a small 4×8 matrix with noisy VCAs and limited control, we expanded over the years to ever bigger systems with up to 40 DSP-driven channels and realtime spatialization control.