A pendulum swings through a space. A video screen, constituting its pendulum bob, carves its path through the exhibition space. From its ever changing position it presents a view onto another scenery. Slowly it passes the tree and the table; and then it returns. Although freely swaying through space, it collides with objects; invisible, but audible. A computer traces the pendulum’s position and— in a computer model—embeds it into a mathematical world where it collides and interacts with objects.
This interaction between the pendulum and its mathematical surroundings provides the source for a three-dimensional soundscape. Something is forced into motion. Slowly it returns to standstill. Next time, things will behave rather similarly. Only the world in the computer changes.

Artistic concept, audio, visuals: Volkmar Klien; Sensorics, modeling, video: Thomas Grill; Technical Production: cat-x - (http ://www. cat-x. at)

Volkmar Klien (AT), born 1 971, studied composition at the Vienna University of Music and Performing Arts and philosophy at the University of Vienna. He spent 1997-2002 in London working as a freelance artist, a researcher at the Royal College of Arts and an external lecturer at the London Institute. He gained a PhD in electro-acoustic composition from City University London and currently works as a researc her at the Austrian Institute for Artificial Intelligence (OFAI) and teaches at the Vienna University of Music and Performing Arts.

Thomas Grill (AT), born 1972, studied technical physics in Linz, as well as Computer music and electronic media and interactive electronic instruments in Vienna. Since 2003, lectureships at the University for Music and Performing Arts and the University for Applied Arts, Vienna. Development of commercial and open-source media Software. Scientific associate at the Austrian Research Institut for Artificial Intelligence.