You’ll need headphones for this to work. Make sure there is no noise around, close your eyes, turn the volume up a little bit, hold and press headphone on your ears for better hearing, play it and enjoy this impressive audio work ( illusion ). Not a screamer not a prank!
CREDITS: The embedded audio clip was created by QSound Labs ( ) as a demonstration of Binaural audio technology.
QSound’s 3D sound technology is being used by EarGames ( maker of 3D audio games.
See this wikipedia entry for information about binaural recordings.
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