Speech recognition method and apparatus thereof

Details Speech recognition method and apparatus thereof Speech recognition method and apparatus thereof

G - Physics

10

L

354/54

G10L 15/00 (2006.01)

Patent

CA 1227286

ABSTRACT OF THE DISCLOSURE A speech recognition method and apparatus in which a trajectory drawn by a plurality of time-sequential acoustic parameters obtained from segmented speech signals in the parameter space thereof time-normalizes the segmented speech signals and this trajectory is matched with a standard time- normalized trajectory, which was previously registered, to perform the speech recognition. A silence acoustic parameter can also be added to the time-sequential acoustic parameter produced from the segmented speech signals to obtain the trajectory thereof. The length of the trajectory formed from the segmented speech signals is determined and is used to select the previously registered standard trajectory to be matched. Therefore, in addition to checking the distance between the segmented speech trajectory and the registered standard trajectory to obtain a match, the lengths of the two trajectories are also taken into account, thereby increasing the recognition ratio.

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