Rikard Lindell has developed C3 Loops, a ConCentric Craft audio/visual touchscreen system.C3 Loops is a single-point touch screen interface that allows users to navigate around a virtual plane playing audio and video clips. All the action occurs by using your fingers in a corkscrew motion. Zooming in and out is achieved by circling with your finger. The user draws their fingers around in circles clockwise to zoom in, counterclockwise to zoom out.
See the interface in action running on a Macbook which was demonstrated at the NordiCHI'08 (the 5th Nordic Conference on Computer-Human Interaction). Here is Pete's Sonic Art Research blog which documented the NordiCHI'08 workshops.
Source
