Spoken Dialog Planning to Reduce User Distraction in Mobile Environments
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2015-12-01
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TRIS Online Accession Number:01593529
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Edition:Final Report
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Abstract:As speech technology becomes a significant modality in the vehicle environment, it is essential to develop and assess mechanisms that can reduce driver distraction. Although speech-based interfaces are natural candidates for hands-busy, eyes-busy environments such as the vehicle, they also present a potential safety hazard. Since language is inherently a cognitive process, the more attention that is required by the speech interface, the less that is available for the task of driving. Due to inevitability of vehicle-based speech interfaces, the question becomes how to design and modulate the human-computer communication flow so as to minimize the extra cognitive burden on the vehicle occupants. Similar observations can also be applied to pedestrians using smartphone-based applications, where distracted pedestrians pay less attention to where they are going. This project explored both basic and applied aspects of voice based human-machine interface interaction with the goal of providing insight regarding variables and strategies that are significant for minimizing user distraction in driving or pedestrian scenarios. The results are timely as the National Highway Traffic Safety Administration is considering Phase III distraction guidelines to address demands associated with voice-activated in-vehicle controls. As detailed in the reports listed in this document, many modern voice initiated in-vehicle systems may best be considered as auditory-vocal-visual-manual-cognitive interactions (e.g. mixed mode tasks) and a comprehensive demand assessment mechanism may need to consider the time course of tasks of this nature.
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