Our primary experience of computing and of computers is through the screen. The feedback to the user and the input of the user are both most often communicated visually. This isn’t, however, how our experience of the world works, or how our cognitive and perceptual facilities function. One of our most finely tuned and emotionally evocative senses, our hearing, is often relegated to a lesser role or is ignored altogether in interactive design. In some scenarios, sound isn’t a viable method of input or feedback. We don’t want to have to talk to a computer or have it making noise in a quiet office. In other situations, neglecting the possibility of aural interaction with a user is a great loss to both an art piece or a produ....