Musical sweet spot for 3D sound

that is his lab's page with a bit more general information about what he is doing.

this describes the process a bit more clearly http://www.princeton.edu/3D3A/BACCH_intro.html it is a way of delivering binaural audio over loud speakers.

I haven't read through his papers very closely yet, but in what I have read he seems to misrepresent what ambisonics was on about so I'm dubious. But definitely interesting stuff and worth further research.