The rapidly increasing use of mobile telephones means that people access these services at many different times and places. The provision of this extra functionality may be rendered useless if usability issues are not considered. These pages have all of the details on the project funded to look into earcons for telephone based interfaces . We are now begining to use 3D sound to expand the audio display space. This allows you to present sounds as coming from around the users head - in front, behind, above or below.
Users can move their heads around and the sounds are recomputed to remain in the correct place.
This gives us high quality 3D sound at low cost. S.A. Trading Space for Time in Interface Design . Spatial audio in small display screen devices. Non-Visual Interfaces for Wearable Computers. A study of audio-visual location discrepancy detection under different visual projections.