Opto-Phono-Kinesia (OPK): Designing Motion-Based Interaction for Expert Performers

Opto-Phono-Kinesia (OPK) is an audio-visual performance piece in which all media elements are controlled by the body movements of a single performer. The title is a play on a possible synesthetic state involving connections between vision, sound and body motion. Theoretically, for a person who experiences this state, a specific colour could trigger both a sound and a body action. This synesthetic intersection is simulated in OPK by simultaneity of body movement, and audio-visual result. Using the Gesture and Media System 3.0 motion-tracking system, the performer can dynamically manipulate an immersive environment using two small infrared trackers. The project employs a multipart interface design based on a formal model of increasing complexity in visual-sound-body mapping, and is therefore best performed by an expert performer with strong spatial memory and advanced musical ability. OPK utilizes the "body as experience, instrument and interface" [1] for control of a large-scale environment.