Seeing the Movement through Sound: Giving Trajectory Information to Visually Impaired People

This paper presents a sonification model to convert object tracking information into sound in real time. The goal is to generate a sound that describes the information given by a trajectory - such as position, direction, velocity and shape - to help visually impaired people to "see" the world: how can we describe to them a square like we do by drawing it in a sheet of paper? The usage can be extensive: from audio games to computer-human interfaces. Experimental results are analyzed in practical tests using only audio with sighted people and the applicability of the model is discussed.