On the trail of building immersive sensory experiences for audiences, Waller invented this three-projector system (3x35mm synchronised projectors), and a curved screen offering 146 degrees of wrap-around viewing. This immersive visual technology was complimented and reinforced by a ” high-quality, seven-track discrete, directional, surround-sound system”. Waller’s search for an immersive audience experience, was trumped some seven years later by a young cine-engineer called Morton Heilig and his Sensorama simulator (1957), though in this case the audience was a single user-participator-viewer-activator.