Patent ID: 8644531

Claim:
An information processing system comprising: a display; a display sensor configured to detect a movement or a rotation of the display; a transducer unit configured as an earphone unit or a headphone unit; a sound processing part configured to process an audio signal so as to localize a sound image produced by the transducer unit in a position outside a head of a listener wearing the transducer unit; and an operation controller configured to: compute a positional relation between the display and the head of the listener in an actual viewing space by computing an output from the display sensor configured to detect the movement or the rotation of the display to obtain at least one of (a) a moving direction and a moving distance of the display with respect to the head of the listener, and (b) a rotation direction and a rotation angle of the display with respect to the head of the listener, and control the localization of the sound image by the sound processing part in accordance with a result of the computation of the positional relation between the display and the head of the listener in the actual viewing space so that the computed positional relation between the display and the head of the listener is mapped as a positional relation between an image display surface and the head of the listener in a virtual viewing space.