The 3D sound emoticon service according to the present invention includes a mono voice recording step of recording a user's voice in a mono format through a mono voice input device, and a mono voice data generated in the mono voice recording step through a stereophonic sound generation program. A binaural voice conversion step of converting to an inural stereophonic sound format, and a 3D sound by mixing the binaural voice data generated in the binaural voice conversion step through the stereophonic sound generation program and 3D background sound, A 3D sound generation step of storing, a pre-listening step in which the user listens to the 3D sound in advance, selecting one of a plurality of emoticons pre-entered into the stereophonic sound generation program, and synthesizing the 3D sound and the selected emoticon A 3D sound emoticon generating step of generating and storing one 3D sound emoticon and a transmitting step of transmitting the completed 3D sound emoticon to a user or a transmission target, wherein the user's voice is transmitted through a binaural voice input device 3D sound for generating and storing 3D sound by mixing the binaural voice data and 3D background sound generated in the binaural voice recording step through a stereophonic sound generation program and a binaural voice recording step of recording in a real format A generating step; a pre-listening step in which the user listens to the 3D sound in advance; a 3D sound emoticon generating step of generating and storing an emoticon, and a transmitting step of transmitting the completed 3D sound emoticon to a user or a transmission target.
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