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- Laser_microphone abstract "A laser microphone is a surveillance device that uses a laser beam to detect sound vibrations in a distant object. This technology can be used to eavesdrop with minimal chance of exposure.The object is typically inside a room where a conversation is taking place, and can be anything that can vibrate (for example, a picture on a wall) in response to the pressure waves created by noises present in the room. The object preferably has a smooth surface. The laser beam is directed into the room through a window, reflects off the object and returns to a receiver that converts the beam to an audio signal. The beam may also be bounced off the window itself. The minute differences in the distance traveled by the light as it reflects from the vibrating object are detected interferometrically. The interferometer converts the variations to intensity variations, and electronics are used to convert these variations to signals that can be converted back to sound.However, countermeasures exist in the form of specialized light sensors that can detect the light from the beam. Rippled glass can be used as a defense, as it provides a poor surface for a laser microphone.".
- Laser_microphone wikiPageExternalLink schwartzengineeringanddesign-smokemic-aes2009.html.
- Laser_microphone wikiPageExternalLink contentslmj6.html.
- Laser_microphone wikiPageExternalLink laser-mic.htm.
- Laser_microphone wikiPageID "2244025".
- Laser_microphone wikiPageRevisionID "602439335".
- Laser_microphone date "April 2012".
- Laser_microphone hasPhotoCollection Laser_microphone.
- Laser_microphone reason "NPR interview sources part of this section, but does not verify such exact claims as "laser microphones were used". Precise sourcing needed to avoid synthesis here.".
- Laser_microphone subject Category:Covert_listening_devices.
- Laser_microphone subject Category:Microphones.
- Laser_microphone subject Category:Optical_devices.
- Laser_microphone subject Category:Surveillance.
- Laser_microphone type Artifact100021939.
- Laser_microphone type Device103183080.
- Laser_microphone type ElectricalDevice103269401.
- Laser_microphone type Electro-acousticTransducer103274561.
- Laser_microphone type Instrumentality103575240.
- Laser_microphone type Microphone103759954.
- Laser_microphone type Microphones.
- Laser_microphone type Object100002684.
- Laser_microphone type OpticalDevice103851341.
- Laser_microphone type OpticalDevices.
- Laser_microphone type PhysicalEntity100001930.
- Laser_microphone type Transducer104470953.
- Laser_microphone type Whole100003553.
- Laser_microphone comment "A laser microphone is a surveillance device that uses a laser beam to detect sound vibrations in a distant object. This technology can be used to eavesdrop with minimal chance of exposure.The object is typically inside a room where a conversation is taking place, and can be anything that can vibrate (for example, a picture on a wall) in response to the pressure waves created by noises present in the room. The object preferably has a smooth surface.".
- Laser_microphone label "Laser microphone".
- Laser_microphone label "Lasermicrofoon".
- Laser_microphone label "Lasermikrofon".
- Laser_microphone label "Micrófono láser".
- Laser_microphone label "レーザーマイクロフォン".
- Laser_microphone sameAs Laserový_mikrofon.
- Laser_microphone sameAs Lasermikrofon.
- Laser_microphone sameAs Micrófono_láser.
- Laser_microphone sameAs レーザーマイクロフォン.
- Laser_microphone sameAs Lasermicrofoon.
- Laser_microphone sameAs m.06ys0v.
- Laser_microphone sameAs Q1321229.
- Laser_microphone sameAs Q1321229.
- Laser_microphone sameAs Laser_microphone.
- Laser_microphone wasDerivedFrom Laser_microphone?oldid=602439335.
- Laser_microphone isPrimaryTopicOf Laser_microphone.