The present invention relates to a sound system, and more particularly, to a sound system using an earbud device that provides an acoustic and optical method corresponding to the psychological state of a user (wearer) by using an EEG sensor, an optical element and a speaker. A sound system using an earbud device according to the present invention includes a body part having an internal accommodating space; an ear tip mounted on a first side surface of the body part and having an acoustic path; a first optical element mounted on the first side surface of the body part; a light irradiator including a second optical element mounted on the acoustic path of the eartip; an EEG sensor including a pair of first and second electrodes spaced apart from each other and mounted on the side of the eartip to detect EEG; a speaker for emitting sound through the acoustic path; a communication unit for performing communication with an electronic communication device; and first and second earbud devices including a data processor that controls the light irradiator to perform a light irradiation function, transmits the detected value from the EEG sensor to an electronic communication device through the communication unit, receives a stereo sound signal of binaural beat sound data from the electronic communication device and emits sound through the speaker to perform a binaural beat sound reproduction function.
SOUND SYSTEM USING EARBUD DEVICE