interface : Electronic Chamber Ensemble

This paper presents the interface developments and music of the duo "interface," formed by Curtis Bahn and Dan Trueman. We describe gestural instrument design, interactive performance interfaces for improvisational music, spherical speakers (multi-channel, outward-radiating geodesic speaker arrays) and Sensor-Speaker-Arrays (SenSAs: combinations of various sensor devices with spherical speaker arrays). We discuss the concept, design and construction of these systems, and, give examples from several newly published CDs of work by Bahn and Trueman.