An azimuth and distance calculator calculates the relative direction and distance to the next intersection to be guided, based on information on the intersection supplied from storage for received information on an object to be guided and information on the moving histories of a user. Then, the calculator converts the relative direction into a horizontal angle and the distance to an elevation angle, and passes the angles to a stereophony generator. The stereophony generator creates output sound information having a sound image localized outside of a headphone and outputs the information to the headphone. In this manner, the user can accurately understand the distance to the object.