Automatic integrated analysis of jaw and lip movement in speech production.
A noninvasive methodology for studying the kinematics of speech production is presented. It is based on the tracking of very small and light passive markers attached to the subjects' face. Using a pair of TV cameras, the 3-D markers' positions are computed in real time, at a subpixel accuracy, by a dedicated hardware. From these data, the time course of a set of parameters which describe lip and jaw movement is computed; in addition, a semiautomatic procedure that identifies the exact onset and offset of the investigated sequences has been developed. To compare the results over different productions, a time normalization procedure based on a continuous inverse Fourier transform has been implemented.
Borghese
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Istituto Neuroscienze Bioimmagini-C.N.R., Milano, Italy.
Ferrigno
G
G
Redolfi
M
M
Pedotti
A
A
D006801:Humans; D007568:Jaw / Q000502:physiology*; D008046:Lip / Q000502:physiology*; D008953:Models, Anatomic; D009068:Movement / Q000502:physiology*; D013060:Speech / Q000502:physiology*; D013068:Speech Production Measurement