Contextual push-to-talk: shortening voice dialogs to improve driving performance

Authors:
Garrett Weinberg;Bret Harsham;Clifton Forlines;Zeljko Medenica
Affiliations:
Mitsubishi Electric Research Labs, Cambridge, MA, USA;Mitsubishi Electric Research Labs, Cambridge, MA, USA;Mitsubishi Electric Research Labs, Cambridge, MA, USA;University of New Hampshire, Durham, NH, USA
Venue:
Proceedings of the 12th international conference on Human computer interaction with mobile devices and services
Year:
2010

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Abstract

We present a driving simulator-based evaluation of a new technique for simplifying in-vehicle device interactions and thereby improving driver safety. We show that the use of multiple, contextually linked push-to-talk buttons (Multi-PTT) shortens voice dialog duration versus the use of a conventional, single push-to-talk button (Single-PTT). This benefit comes without detriment to driving performance or visual attention to the forward roadway. Test subjects also preferred the Multi-PTT approach over the conventional approach, and reported that it imposed a lower cognitive workload.