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 or at the corners of a platform. 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.