Device and method for adjusting volume in terminal

The present invention relates to a volume adjusting device for a terminal and a method thereof, more specifically, a volume adjusting device and a method thereof capable of enabling a terminal to automatically adjust the sound volume. To this end, the volume adjusting device for a terminal includes an automatic volume adjusting unit for extracting a representative volume based on frame information of an audio file and adjusting a master volume by the difference between the extracted representative volume and a reference volume; and a control unit for controlling a terminal to play the audio file at the master volume adjusted by the automatic volume adjusting unit. [Reference numerals] (210) Representative volume extraction unit;(211) Gain extraction unit;(212) Preprocessing unit;(213) Extraction unit;(220) Reference volume extraction unit;(230) Comparing unit;(240) Volume adjusting unit