Method for processing audio signal and audio signal processing apparatus thereof

An audio signal processing method and an audio signal processing device are provided. The audio signal processing method comprises matching a user face with hearing information to be stored; recognizing the user face; searching the hearing information which is matched with the recognized user face; and processing an audio signal using the searched hearing information. Thereby, a user can listen to the audio signal which is automatically adjusted according to the user's hearing characteristics without a separate operation. [Reference numerals] (AA) START;(BB) END;(S610) Match a user face with hearing information to be stored;(S620) Recognize the user face;(S630) Search the hearing information which is matched with the recognized user face;(S640) Process an audio signal using the hearing information;(S650) Output the audio signal