The Role of Earcons and Auditory Icons in the Usability of Avatar-Based E-Learning Interfaces

This paper describes an experimental study conducted to investigate non-speech sounds such as earcons and auditory icons when used alongside speaking avatars in e-learning interfaces. The usability aspects (effectiveness, memorability and user satisfaction) of the experimental e-learning interface were evaluated by a group of 24 users. The obtained results showed that earcons and auditory icons could be effective in communicating supportive information related to the learning material when presented by a full-body animated virtual lecturer in the interface of e-learning applications. Experimental results also revealed that these sounds were memorable by the users and satisfactory to them.