Method and apparatus for automatic sound field control and output device controlled by the apparatus for automatic sound field control

The present invention relates to an automatic sound field control method, an automatic sound field control apparatus, and an output apparatus controlled by the automatic sound field control apparatus. According to the present invention, the automatic sound field control method comprises: a step of recognizing a location of a user; and a step of adjusting at least one of the direction and volume of the speaker according to the moved position when a user moves. The present invention can maintain an optimal sound field feeling depending on users position.