Learning non-visual graphical information using a touch-based vibro-audio interface
Publication Name: Proceedings of the 14th International ACM SIGACCESS Conference on Computers and Accessibility (Assets'12)
Abstract: This paper evaluates an inexpensive and intuitive approach for providing non-visual access to graphic material, called a vibroaudio interface. The system works by allowing users to freely explore graphical information on the touchscreen of a commercially available tablet and synchronously triggering vibration patterns and auditory information whenever an onscreen visual element is touched. Three studies were conducted that assessed legibility and comprehension of the relative relations and global structure of a bar graph (Exp 1), Pattern recognition via a letter identification task (Exp 2), and orientation discrimination of geometric shapes (Exp 3). Performance with the touch-based device was compared to the same tasks performed using standard hardcopy tactile graphics. Results showed similar error performance between modes for all measures, indicating that the vibro-audio interface is a viable multimodal solution for providing access to dynamic visual information and supporting accurate spatial learning and the deve
Citation: Giudice, N.A., Palani, H., Brenner, E., & Kramer, K.M., (2012). Learning non-visual graphical information using a touch-based vibro-audio interface. Proceedings of the 14th International ACM SIGACCESS Conference on Computers and Accessibility (Assets’12), Pp. 103-110).