Video frames from the visual stimuli just before the consonant release: top row [k], bottom row [t]; left side [a] context. right side [e] context.

Contexts in source publication

Context 1

... visual speech stimuli were analysed by inspecting the videos frame by frame during the articulatory movements. Attention was paid to the extent of mouth opening, visibility of the tongue and other articulators, and particularly the features distinguishing (Fig. 4). This was mainly because the mouth was more open when [a] rather than [e] was uttered. Furthermore, the visual quality was better for the [a] context stimuli since the inside of the mouth was lit well, improving the visibility of the tongue; and the video images were sharper, enhancing visual detail. Consequently, the position of the ...

Context 2

... visual speech stimuli were analysed by inspecting the videos frame by frame during the articulatory movements. Attention was paid to the extent of mouth opening, visibility of the tongue and other articulators, and particularly the features distinguishing (Fig. 4). This was mainly because the mouth was more open when [a] rather than [e] was uttered. Furthermore, the visual quality was better for the [a] context stimuli since the inside of the mouth was lit well, improving the visibility of the tongue; and the video images were sharper, enhancing visual detail. Consequently, the position of the ...