Abstract
Two experiments were performed to investigate the most advantageous format for interactive dialogue between pilots of a fighter aircraft and an on-board voice recognition and synthesis system. A representative task was chosen among those anticipated to be performed using a multi-function display and control system during high workload mission segments. The first experiment compared different methods of progressing through a “menu driven” sequence using voice I/O. A second experiment was conducted using the dialogue approach that proved easiest to use in the first experiment, and compared performance of voice I/O vs. keyboard-display I/O in timeshared conditions with a simultaneously performed flight control task. Results showed that after an initial training period with voice I/O pilots performed the flight control task with little or no disruption from the voice interactive data entry task, but showed significantly higher degradation when required to use the keyboard system.
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