NDLI: Voice as a Mouse Click: Usability and Effectiveness of Simplified Hands-Free Gaze-Voice Selection

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Voice as a Mouse Click: Usability and Effectiveness of Simplified Hands-Free Gaze-Voice Selection

Content Provider	MDPI
Author	Zhao, Darisy G. Karikov, Nikita D. Melnichuk, Eugeny V. Velichkovsky, Boris M. Shishkin, Sergei L.
Copyright Year	2020
Description	Voice- and gaze-based hands-free input are increasingly used in human-machine interaction. Attempts to combine them into a hybrid technology typically employ the voice channel as an information-rich channel. Voice seems to be “overqualified” to serve simply as a substitute of a computer mouse click, to confirm selections made by gaze. It could be expected that the user would feel discomfort if they had to frequently make “clicks” using their voice, or easily get bored, which also could lead to low performance. To test this, we asked 23 healthy participants to select moving objects with smooth pursuit eye movements. Manual confirmation of selection was faster and rated as more convenient than voice-based confirmation. However, the difference was not high, especially when voice was used to pronounce objects’ numbers (speech recognition was not applied): Score of convenience (M ± SD) was 9.2 ± 1.1 for manual and 8.0 ± 2.1 for voice confirmation, and time spent per object was 1269 ± 265 ms and 1626 ± 331 ms, respectively. We conclude that “voice-as-click” can be used to confirm selection in gaze-based interaction with computers as a substitute for the computer mouse click when manual confirmation cannot be used.
Starting Page	8791
e-ISSN	20763417
DOI	10.3390/app10248791
Journal	Applied Sciences
Issue Number	24
Volume Number	10
Language	English
Publisher	MDPI
Publisher Date	2020-12-09
Access Restriction	Open
Subject Keyword	Applied Sciences Ergonomics Hands-free Interaction Gaze-based Interaction Voice Voice Command Selection Moving Objects Smooth Pursuit Eye Movements Human-machine Interaction
Content Type	Text
Resource Type	Article

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