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Phase Cancelling Noise (What the heck is this)
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Message-Id: <[email protected]>
Subject: What the heck is this? Optical noise encryption?
>Anyone know anything about this? How secure is this? If you have to have
>2 "identical" lasers to pull this off, sounds like this would not be very
>secure, since there must be a pretty wide margin of error (I mean, how
>"identical" can 2 lasers be?)
The noise can be phase cancelled. Dan Healy did it all the time in '74
with the Wall of Sound double microphone set up for Grateful Dead.
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