Abstract: Provided is a method for generating stereophonic sound. According to one embodiment of the present invention, a phase angle relative to an original sound is controlled by focusing on a rearward sense of localization, which is difficult to express, and using a plurality of delay devices (delay machines) to change the time, phase, and direction thereof. Thereby provided is a technology having the purpose of improving a subjective evaluation in a psychological space by using a rearwardly-localized sound source to emphasize and effectively simulate there actually being a sound source toward the rear.