Head-related transfer functions are essential to creating a realistic immersive (or 3D) audio experience over headphones.
Immersive audio goes beyond 5.1 surround sound and uses more channels to create the sensation of height (sound above). Where this gets interesting is, how many more channels?
Ever since audio technology made the shift from mono to stereo imaging it seems that some listeners have been on a quest for the most immersive audio image possible.
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