A navigation apparatus includes a guidance-information creating unit that
creates guidance information by acquiring a guiding direction, in which a
vehicle should be guided, from preset route information and current
position information; an acoustic-image creating unit that creates an
acoustic image for notifying a driver of the guidance information; and an
acoustic-image control unit that changes at least one of a movement start
position of the acoustic image, a direction change position of the
acoustic image, a moving amount of the acoustic image, a moving speed of
the acoustic image, and a moving locus of the acoustic image according to
the current position information and a guiding position in the preset
route information.