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Henry
Joined: 03 Apr 2001 Posts: 2878 Location: NYC
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Posted: Mon Apr 24, 2006 1:20 pm Post subject: New Technology Renders Radar Detector Obsolete |
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Here...see for yourself. Article from New Scientist...a weekly magazine from Great Britain.
http://www.newscientisttech.com/article/mg19025485.600.html
Article Preview
This is a preview of the full article. New Scientist Full Access is available free to magazine subscribers
Caught by the sound of your speeding car
24 April 2006
Barry Fox
Magazine issue 2548
A HIDDEN trap that detects how fast vehicles are going just by listening to them as they pass could catch speeding drivers unawares.
The system, being developed by the University of Tennessee and the Battelle Institute in Oak Ridge, uses microphones hidden by the roadside to measure the speed of passing vehicles. It does not emit telltale radiation, unlike radar or laser-based devices, so it cannot be picked up by dashboard detectors.
Once the microphones have detected and recorded the sound of a passing vehicle, digital filtering removes background noise to leave only the sound of the engine. Software then calculates the vehicle's speed by measuring the engine sound's Doppler shift - the change in a sound's pitch as its source moves past an observer.
The system, revealed by recently filed patents, has been developed with funding from the US Department of Energy. The microphones could easily be hidden in ... |
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idanity
Joined: 21 May 2005 Posts: 3097 Location: N.W.U.S.A.
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Posted: Tue Apr 25, 2006 7:23 am Post subject: |
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free microphones on the road,,,yeah...
be prepared to see them for sale on ebay soon..haaahaaaa _________________ .......... |
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scrat
Joined: 01 Apr 2005 Posts: 1251 Location: california
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Posted: Thu Apr 27, 2006 10:37 am Post subject: |
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