Sound-Detecting Camera Traps Noisy Motorists

The Noise Snare is just that — a trap to catch drivers of excessively noisy cars and motorbikes and prove to the world (or maybe just the cops) that they spend their travel time ripping a ragged hole in the peace of other city dwellers.
The trap is simple. A microphone detects loud vehicles and starts [...]

Source: http://www.wired.com/gadgetlab/2011/05/sound-detecting-camera-traps-noisy-motorists/

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