http://inquirerinside.com/?article=7911 ... At present On Alert is in beta testing. The system consists of acoustic sensors that can hang from power lines and street lighting or be mounted on building exteriors. The sensors are programmed to recognise a particular sound signature. They are connected to a central server via low frequency RF waves which dispatches the information to PDAs and smartphones used by officers in the field or to fixed terminals. ... Robinson said the next project will be to adapt the system for other applications such as listening out for swimmers or boats in water locations, for car crashes or seismic activities. "Almost any event, which has a predictable acoustic, subsonic or ultrasonic signature could be detected and located by the gunshot detection system", he was quoted in the press release as saying. ... _______________________________________________ http://www.mccmedia.com/mailman/listinfo/brin-l
