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      Sound graphs: a numerical data analysis method for the blind.

      Journal of Medical Systems

      Adult, Blindness, Communication Aids for Disabled, Computers, Data Display, Sound, methods, Female, Humans, Male, Self-Help Devices

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          Abstract

          A system for the creation of computer-generated sound patterns of two-dimensional line graphs is described. The objectives of the system are to provide the blind with a means of understanding line graphs in the holistic manner used by those with sight. A continuously varying pitch is used to represent motion in the x direction. To test the feasibility of using sound to represent graphs, a prototype system was developed and human factors experimenters were performed. Fourteen subjects were used to compare the tactile-graph methods normally used by the blind to these new sound graphs. It was discovered that mathematical concepts such as symmetry, monotonicity, and the slopes of lines could be determined quickly using sound. Even better performance may be expected with additional training. The flexibility, speed, cost-effectiveness, and greater measure of independence provided the blind or sight-impaired using these methods was demonstrated.

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          Most cited references 5

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          Factors That Influence the Localization of Sound in the Vertical Plane

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            Localization of tonal stimuli in the vertical plane.

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              Tangible Graphs for the Blind

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                Author and article information

                Journal
                2932516

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