Human-Computer Interaction: Ergonomics and User Interfaces - Vol. 1

By Hans-Jörg Bullinger; Jürgen Ziegler | Go to book overview

simultaneously? How to mark attributes of object surface (colour, texture) and so on. ,Figure 4b shows a variant of the table sonification.

Figure 4 (a) Tactile ( Kurze 1996) and (b) sound mapping of a table

- colours correspond to arrows' parameters as in Figure 2


3 Conclusion

Individual features of selective attention and short-term memory of spatial localization of subjective acoustic images require a specific rhythmic structure (cadenced picture) in the creation of a sound stage of objects. Special caesurae and pitch alteration signals are necessary for the exact representation of extreme points, for switching and fixing of attention, for element separation or, conversely, for a merger of sound streams. Essentially, in these points a moving source must be rendered as a quasi-static object. In the future we wish to extend control by spatial tonal modulation and volume of sound cursors to specially analysed gradients of time intervals and playback velocities within different image fragments.


4 References

Agranovski A. V., Evreinov G. E., Yashkin A.S. ( 1996). "Graphic audio display for the blind". In: Klaus, J., Auff, E., Kremser W., Zagler, W. L. (Eds.): Proc. 5th Int. Conference ICCHP'96, ( Linz, Austria, July 1996), pp. 539-542.Verlag R. Oldenburg, Wien Munchen.

Edwards A. D.N.( 1989). "Soundtrack: An auditory interface for blind users". Human-Comp. Interaction 4 ( 1), 45-66.

Gibson J. J. ( 1950). "The perception of visual surfaces". American Journal of Psychology 63, 367-384.

Kurze M. ( 1996) "TDraw: A computer-based tactile drawing tool for blind people". In: Proc. of ASSETS'96, ( Vancouver, BC, Canada 11.-12.04 1996), pp. 131-138.

Warren, D. H. ( 1994). Blindness and Children: An Individual Differences Approach. New York: Cambridge University Press.

-530-

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