Patent ID: 7957823

Claim:
An apparatus for tuning a volume of a sound signal downloaded from an outside source, the apparatus comprising: a memory for storing the sound signal downloaded from the outside source; a speaker for outputting the sound signal stored in the memory; a microphone for receiving the sound signal output from the speaker; a codec for outputting modulation data of the sound signal input from the microphone; a volume tuning determining unit for calculating volume figure data with respect to the sound signal and stress figure data of the speaker, using the modulation data, and for calculating volume adjustment gain data when the volume figure data is less than a predetermined volume figure minimum and the stress figure data is less than a predetermined stress figure minimum or when the volume figure data is greater than a predetermined volume figure maximum and the stress figure data is greater than a predetermined stress figure maximum; and a volume tuner for tuning the volume of the sound signal using the calculated volume adjustment gain data.