Discussion
Introduction to Spherical Harmonics for Graphics Programmers
hackingonempty: > spherical harmonics can have uses beyond lightingThis math is also used in Ambisonic surround sound though newer techniques use planewave expansion.For games, the full-sphere encoding of Ambisonic B-format can be decoded for arbitrary speaker locations and the soundfield rotated around any axis. I'm not sure if its ever been used for a game though.