On the Relevance of Auditory Feedback for Subjective and Objective Quality of Control in a Balancing Task

A tangible audio–visual interface based on the metaphor of b alancing a ball on a tiltable track allows the measurement of hu man control movements under different conditions of sensor y feedback. This specific scenario of human–system interacti on forms an example for the definition of various measures of per formance and quality of interaction. The dependence of thes e measures on specific configurations of the interface with reg ard to the employed audio–visual feedback, and their relations hip is discussed.