Approaches to Real Time Ambisonic Spatialization and Sound Diffusion using Motion Capture

This paper examines the use of motion capture to control ambisonic spatialization and sound diffusion parameters in real time. The authors use several software programs, developed in Max, to facilitate the gestural control of spatialization. Motion tracking systems using cameras and peripheral devices such as the Leap Motion are explored as viable and expressive means to provide sound localization. This enables the performer to therefore use movement through personal space to control the placement of the sound in a larger performance environment. Three works are discussed, each using a different method: an approach derived from sound diffusion practices, an approach using sonification, and an approach in which the gestures controlling the spatialization are part of the drama of the work. These approaches marry two of the most important research trajectories of the perfor-mance practice of electroacoustic and computer music; the geographical dislocation between the sound source and the actual, perceived sound, and the dislocation of physical causality to the sound.