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Head-turning sound

Posted by josh358 on March 4, 2011 at 16:44:34:
is going to happen, I think. At least one product is already being sold. It's only a matter of time before, as you suggest, companies like Apple start using it.

IMO, the true fruition of the technology will require a virtual reproduction of the sound field around a listener's head in the original performance space, along with real-time modeling of the listener's measured HRTF. Per the Helmholtz-Kirchhoff integral, you should be able to make such a recording of a live performance with an array of M-S microphones. Or the individual sound sources could be recorded along with a description of the acoustics and the sound field recreated synthetically. And you'll be able to use a similar recording to drive speakers using wave field synthesis. In that case, I suspect it will be most practical to record and reproduce only the part of the sound field that's coming from the front of the hall.