led by Derek Holzer (USA/DE)
October 24 to 27, 2009, from 11:00 to 18:00
National Academy of Arts, Studio 1, 1 Shipka Str.

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.