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Here is how it works. Edgar Choueiri is professor of applied physics at Princeton University.   Pure Stereo   Princeton.edu Note: If you are using a recent Apple MacBook you may not be able to hear the 3D demos in this video in 3D due to a known problem in the MacBook design related to the location of the internal "subwoofer" that creates a strong Left-Right imbalance in the audio.   

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