Navigation device and control method thereof

PURPOSE: A navigation device and a control method thereof are provided to increase accuracy of a vehicle operation and path guidance by changing the level difference of a left sound and a right sound according to the real right turn point. CONSTITUTION: A memory(150) stores one or more sound source files. A sound source file provides the aural information changed by corresponding to the operation direction change of the vehicle by applying the sound effect to the audio signals of the plurality of channels separately. A sound output unit(180) separates the signal read from the sound source file to the audio signals of the plurality of channels, amplifies the audio signals separately and outputs the amplified signal to a plurality of speakers. A controller(140) confirms the vehicle operation path set according to the navigation message received from a GPS receiver. The controller searches for the stored sound source file by corresponding to the direction change from the memory when the operation direction change of the vehicle is required. The controller reproduces the searched sound source file by controlling the sound output unit.