Multimodal Interfaces

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The use of speech and gestures simultaneously, is a relatively new area of research. Sharon Oviatt has studied the use of speech and gesture in a pen-based, geographic map application. When given the choice to issue commands with a pen and/or voice, users preferred to convey locatives (i.e. points, lines, and areas) with the pen, while they preferred speech for describing objects and giving commands.  For intelligent environments, this means that perhaps the most important gesture to detect is pointing, while other commands should, initially at least, be left for voice.

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