But while researchers have learned how to create 3D images that easily fool our visual systems, nobody has found a satisfactory way to create synthetic 3D sounds that convincingly fool our aural systems.
Today, that looks set to change at least in part, thanks to the work of Ruohan Gao at the University of Texas at and Kristen Grauman at Facebook Research. They have used a trick that humans also exploit to teach an AI system to convert ordinary mono sounds into pretty good 3D sound. The researchers call it 2.5D sound.
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