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Multimodal User Input to Supervisory Control Systems: Voice-Augmented Keyboard

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2 Author(s)
Mitchell, C.M. ; Center for Man-Machine Systems Research, School of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA ; Forren, M.G.

The use of a voice-augmented keyboard input modality is evaluated in a supervisory control application. An implementation of voice recognition technology in supervisory control is proposed: voice is used to request display pages, while the keyboard is used to input system reconfiguration commands. Twenty participants controlled GT-MSOCC, a highfidelity simulation of the operator interface to a NASA ground control system, via a workstation equipped with either a single keyboard or a voice-augmented keyboard. Experimental results showed that in all cases where significant performance differences occurred, performance with the voice-augmented keyboard modality was inferior to and had greater variance than the keyboard-only modality. These results suggest that, current moderately priced voice recognition systems are an inappropriate human-computer interaction technology in supervisory control systems.

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Systems, Man and Cybernetics, IEEE Transactions on  (Volume:17 ,  Issue: 4 )