The Evidence of Things Not Said (German: Der Beweis für Dinge die nicht gesagt wurden) is an interactive public intervention art project by Shervin Afshar, David Brunnthaler, and Henning Schulze.
For this project, a prepared phone-booth was installed on the bridge Nibelungenbrücke in Linz, Austria. The phone rings on random intervals. When the receiver is picked up, the user would hear a randomly selected recording from more than seventy pre-recorded sound pieces of the accounts of racist incidents in different cities of Austria.
The recordings are selected from reports published annually by the local anti-racism organization, ZARA (German: Zivilcourage und Anti-Rassismus-Arbeit).
Here is a list of hardware:
- Netbook running Ubunto with Python and Phidget library for Python
- Phidget IO board 1018_2 - PhidgetInterfaceKit 8/8/8
- Phidget 3051_1 - Dual Relay Board
- 12V DC bell
- 220V/110V AC to 12V DC convertor
- Wiring
And here is a diagram of the setup:
- More photos of the production and installation on flickr
- Project website