Interactive Mobile Music Performance with Digital Compass

In this paper we introduce an interactive mobile music performance system using the digital compass of mobile phones. Compass-based interface can detect the aiming orientation of performers on stage, allowing us to obtain information on interactions between performers and use it for both musical mappings and visualizations on screen for the audience. We document and discuss the result of a compass-based mobile music performance, Where Are You Standing, and present an algorithm for a new app to track down the performers' positions in real-time.