Derek Holzer
Derek Holzer (1972) is an American sound artist living in Berlin, whose current interests include DIY analog electronics, sound art, field recording and the meeting points of electroacoustic, noise, improv and extreme music. Becoming frustrated with the performance limitations of the computer, he began new experiments with all-analog systems in 2006. These experiments resulted in electronic and graphical systems for playing light on the overhead projector in a performance called TONEWHEELS, which has been presented in Germany, the United Kingdom, Sweden, Norway, Poland, Estonia, Italy, Belgium, Bulgaria and the Netherlands.
TONEWHEELS is an experiment in converting graphical imagery to sound, inspired by some of the pioneering 20th Century electronic music inventions such as the ANS Synthesizer (Murzin USSR 1937-57), the Variophone (Sholpo USSR 1930) and the Oramics system (Oram UK 1957). Transparent tonewheels with repeating patterns are spun over light-sensitive electronic circuitry to produce sound and light pulsations and textures. In this workshop, participants will learn to construct two different circuits: a simple light-to-sound converter and a variable motor speed controller, as well as how to design and print their own tonewheel patterns using the FLOSS software Inkscape.
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