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A laser microphone is a surveillance device that uses a laser beam to ... A prototype of the device was demonstrated at the 127th Audio Engineering Society convention ...
A laser microphone can be used to reconstruct audio from a laser beam shot onto an object in a room, or the glass pane of a window. Researchers have also prototyped a method for reconstructing audio from video of thin objects that can pick up sound vibrations, such as a houseplant or bag of potato chips.
5.3 Laser audio surveillance. 6 Systems offering partial security. ... One of the most famous systems of secure communication was the Green Hornet. During WWII, ...
The device, embedded in a carved wooden plaque of the Great Seal of the United States, was used by the Soviet government to spy on the US. On August 4, 1945, several weeks before the end of World War II , a delegation from the Young Pioneer Organization of the Soviet Union presented the bugged carving to Ambassador Harriman, as a "gesture of ...
A new type of laser microphone is a device that uses a laser beam and smoke or vapor to detect sound vibrations in free air. On August 25, 2009, U.S. patent 7,580,533 issued for a Particulate Flow Detection Microphone based on a laser-photocell pair with a moving stream of smoke or vapor in the laser beam's path.
Some alarm systems use real-time audio and video monitoring technology to verify the legitimacy of an alarm. In some municipalities around the United States, this type of alarm verification allows the property it is protecting to be placed on a "verified response" list, allowing for quicker and safer police responses.
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AN/SPY - Water Radar Surveillance and Control Systems Designation Purpose/Description Location/Used By Manufacturer AN/SPY-1: Passive Electronically Scanned Array (PESA) 3D radar: Arleigh Burke-class destroyer, Ticonderoga-class cruiser: Lockheed Martin: AN/SPY-3: Active Electronically Scanned Array (AESA)
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