I saw this cool demo of 3D sound. This is totally different from the SL Voice technology, and I think it would compliment it perfectly.
Take a look... http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=princeton+3D+sound The basic idea is that stereo gives a weak illusion of 3D. You have the left signal, ls, and the right signal, rs. A filter computes rs_new = rs - ls ls_new = ls - rs and then play rs_new and ls_new. (Details left as an exercise...) In English---when you record in stereo, you record cross talk between the mics which is recreated when you play back. This idea removes the cross talk, and dramatically increases the 3D illusion. It is a simple filter and works totally at playback time on all sound sources and any stereo recording. It would be easy to add it to the viewer... Just an idea. ponzu
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