APPARATUS FOR DISPLAYING IMAGE AND DRIVING METHOD THEREOF, APPARATUS FOR OUTPUTTING AUDIO AND DRIVING METHOD THEREOF

An image display apparatus, a method for driving an image display apparatus, a sound output apparatus and a method for driving a sound output apparatus, are provided. The image display apparatus comprising a signal separator configured to separate an audio signal and a video signal from an input image signal, an audio decoder configured to decode the audio signal, a sound outputter configured to output the decoded audio signal, a sound effect generator configured to generate a sound effect at a user's request, a communication interface configured to transmit the separated audio signal and the generated sound effect to a surrounding sound output apparatus, respectively, and a controller configured to control the communication interface to transmit the audio signal and the sound effect to the sound output apparatus, wherein the separated audio signal is transmitted when the sound output apparatus is connected.