Information processing system and information processing method

An information processing method performed by an information processing system including 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, and a sound processing part configured to process an audio signal so as to localize a sound image in a position outside a head of a listener wearing the transducer unit and listening to sound, the method comprising the steps of:

• computing an output from the display sensor to obtain a moving direction and a moving distance, or a rotation direction and a rotation angle of the display;
• and
• controlling sound processing performed by the sound processing part in accordance with a result of the computing so that a 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.