Tactile Audio graphics are a type of tactile graphic that when overlaid on a touch sensitive pad gives additional information in audio format. A tactile audio graphic system consists of a touch-sensitive pad that is connected to a computer, a tactile graphic that is placed on the pad, and software for defining areas on the touch-pad and playing back audio information when these areas are touched.
There are two main tactile audio systems on the market including the ViewPlus IVEO and the T3 (the European version of the Talking Tactile Tablet from Touch Graphics, Inc).
Techniques
Typically the touch-pad comes with a software package which will allow you to define regions of an image and insert text or record a description. When a user explores the graphic and touches a defined region, they can listen to audio information attached to that region. Some applications allow several layers of description, for example if a region were to be pressed a second time further information or topic specific details could be output.
Advantages
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It allows access to information impossible to incorporate in an diagram alone
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It adds a new dimension to the learning experience.
Disadvantages
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It must be linked to a computer and is not very portable
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It requires special software and touch-pad
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Can take a long time to programme a new image.
Where to buy materials and equipment