22 July | 10:00 - 17:00
Vector Synthesis with Derek Holzer
The VECTOR SYNTHESIS project is an audiovisual, computational art project using sound synthesis and vector graphics display techniques to investigate the direct relationship between sound+image. It draws on the historical work of artists such as Mary Ellen Bute, John Whitney, Nam June Paik, Ben Laposky, and Steina & Woody Vasulka among many others, as well as on ideas of media archaeology and the creative re-use of obsolete technologies.
During this workshop, you will learn how to use a custom library in the Pure Data programming environment to directly control the vertical and horizontal movements, as well as the brightness, of a beam of light. You will then explore Lissajous figures, waveform representations, and other multiplexed, audio-driven visual shapes and forms which can be displayed and manipulated in real time on an XY oscilloscope, Vectrex game console, ILDA laser display, and other analog vector displays using a DC coupled soundcard.
We will also discuss hardware essentials such as how to modify a normal CRT monitor for vector inputs, how to hack together a cheap DC coupled soundcard, how to use a microcontroller such as the Teensy, Bela or Axoloti as a base for your vector synthesizer, and how to interface with the International Laser Display Association control protocol.
WHAT TO BRING
Please bring your own laptop. If you have a DC soundcard such as the MOTU Ultralight, please bring that as well. Many cheap USB soundcards can be adapted for DC use as well, you can find them on EBay or I will bring several for sale at the workshop. There will be a limited number of displays, so if you already own an analog XY oscilloscope, Vectrex game console, or other vector monitor, that would be very useful to bring. And finally, please get in touch if you have a CRT monitor you would like to see hacked (no guarantees!) during the hardware phase of the workshop. (Additional materials fee applies, we can discuss this.)
About the workshop holder
Derek Holzer is an American instrument builder and sound artist whose current interests include DIY analogue electronics, field recording, media archaeology and the meeting points of electroacoustic, noise, improv and extreme music.
Since 2002, Holzer has given almost 200 experimental sound performances, created scores of unique instruments and installations, and taught over 130 workshops in sound art, basic electronics, field recording, and pure data programming across Europe, North and South America, and New Zealand. One of his many notable projects is "Tonewheels," an experiment in converting graphical imagery to sound, in which transparent tonewheels with repeating patterns are spun over light-sensitive electronic circuitry to produce sound and light pulsations and textures. Inspired by some of the pioneering 20th century electronic music inventions and developed in residencies at Tesla in Berlin DE and STEIM in Amsterdam, the all-analogue set is performed live without the use of computers (using only overhead projectors as light source, performance interface, and audience display), and aims to open up the 'black box' of electronic music and video by exposing the working processes of the performance for the audience to see.