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Lasermicrophone.com - professional laser microphones
https://lasermicrophone.com/
23. Hours. 13. Minutes. 21. Seconds. We can state without any doubt that we offer the BEST laser listening devices in the world. Completely different than some other “educational projects” or toy devices you may find on the Internet, our long-distance laser audio listening instruments are the most reliable tools that law enforcement and professional surveillance teams can deploy in a …
Covert listening device - Wikipedia
https://en.wikipedia.org/wiki/Covert_listening_device
A covert listening device, more commonly known as a bug or a wire, is usually a combination of a miniature radio transmitter with a microphone. The use of bugs, called bugging, or wiretapping is a common technique in surveillance, espionage and police investigations. Self-contained electronic covert listening devices came into common use with intelligence agencies in the …
Project Number: BYK-BUG2 Laser Audio Surveillance Device
https://web.wpi.edu/Pubs/E-project/Available/E-project-010906-145352/unrestricted/ReportFinal.pdf
The purpose of this project was to design a remote audio surveillance device. This project was a follow-up to a Major Qualifying Project (MQP) completed the previous academic year, which created a remote audio surveillance device that used a laser beam incident on a window to listen to a conversation. Their device was successful in
The Laser Microphone
https://web.mit.edu/6.101/www/s2017/projects/jalverio_Project_Final_Report.pdf
The laser microphone is able to reproduce audio detected from a vibrating surface with relatively high accuracy: less than 8% distortion. As an additional feature, the laser microphone is also able to transmit audio via amplitude-modulated laser signal, capture the laser signal, and output the audio. Thus by using a laser based system that captures
LASER AUDIO SURVEILLANCE - TAR IDEAL
https://www.tarideal.com/product/laser-audio-surveillance-3/
LASER AUDIO SURVEILLANCE. TA02019. Operated by transmitting an invisible infra red. beam to the window of the targeted room. Provides undectable laser surveillance from. outside a building from a distance of 500m. 🔍.
Laser Mic Makes Eavesdropping Remarkably Simple | …
https://hackaday.com/2010/09/25/laser-mic-makes-eavesdropping-remarkably-simple/
The receiver module has a phototransistor to pick up the infrared laser light, and an LM386 audio amplifier to generate the audio signal …
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