Update: now with video: the billboard, the posters.
A Gawker writer shares his impressions after being hit by sound beams that created whispers in his head in a promotion for the Paranormal State show (via PSFK). In April, Holosonics, whose "non-linear sound" technology was covered here extensively in the past, did a similar stunt for Court TV.
[Originally published on Dec.5, 2007. Updated with video links on Dec. 10]
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