TERMINAL APPARATUS, AUDIO SYSTEM, AND METHOD FOR CONTROLLING SOUND VOLUME OF EXTERNAL SPEAKER THEREOF

摘要

A user terminal apparatus is provided. The user terminal apparatus includes a touchscreen configured to display a plurality of first user interface (UI) elements for adjusting respective sound volumes of the plurality of speaker apparatuses and a plurality of second UI elements for receiving a selection of a speaker apparatus of the plurality of speaker apparatuses, to group speaker apparatuses of the plurality of speaker apparatuses, the grouped speaker apparatuses corresponding to selected UI elements from among the plurality of second UI elements, and to receive sound volume adjusting input through one of the plurality of first UI elements corresponding to any one of the plurality of grouped speaker apparatuses, and a controller configured to change all first UI elements of the grouped speaker apparatuses based on the sound volume adjusting input.