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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/25527

Title: Gaze Strategies and Audiovisual Speech Enhancement
Authors: Yi, Astrid
Advisor: Wong, Willy
Department: Electrical and Computer Engineering
Keywords: audiovisual speech enhancement
gaze strategies
speech intelligibility
Issue Date: 31-Dec-2010
Abstract: Quantitative relationships were established between speech intelligibility and gaze patterns when subjects listened to sentences spoken by a single talker at different auditory SNRs while viewing one or more talkers. When the auditory SNR was reduced and subjects moved their eyes freely, the main gaze strategy involved looking closer to the mouth. The natural tendency to move closer to the mouth was found to be consistent with a gaze strategy that helps subjects improve their speech intelligibility in environments that include multiple talkers. With a single talker and a fixed point of gaze, subjects' speech intelligibility was found to be optimal for fixations that were distributed within 10 degrees of the center of the mouth. Lower performance was observed at larger eccentricities, and this decrease in performance was investigated by mapping the reduced acuity in the peripheral region to various levels of spatial degradation.
URI: http://hdl.handle.net/1807/25527
Appears in Collections:Master
The Edward S. Rogers Sr. Department of Electrical & Computer Engineering - Master theses

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