The system produces movements in a home entertainment chair. It has a motor
controller and a plurality of movement generator units for generating
small amplitude and low frequency movements in the viewer's chair. The
system is intended for home use and can be easily installed under each leg
of a chair or of a sofa. The source of movement control signals can be
derived from a video presentation soundtrack, and directional movement
sensations can be created by inducing controlled movements in each leg of
the viewer's chair.