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New Audio Ads Can Target One Person in a Crowd

 
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PostPosted: Sun May 25, 2008 4:16 pm    Post subject: New Audio Ads Can Target One Person in a Crowd Reply with quote
A
new form of audio marketing works by beaming inaudible hypersonic waves that
suddenly become audible when something solid, such as your body, walks into the
beam:

The technology works by beaming waves of hypersonic sound at a pitch that
can't be detected by the human ear. However, when those sound waves strike an ...read more
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