Yes, there are sound sensors in Milwaukee, New York and they are spreading to other US cities as well. Those sensors are used as gunshot detection system developed by ShotSpotter. They are placed at different buildings, city structures, utility poles and other locations. Their job is to create an alert when sounds of gunshots are spotted for police to be able to react immediately.
The ShotSpotter gunshot detection system triangulates the location of spotted gunshot sound detected by acoustic sensors and notifies operator about that location. When there are so many gunshots being unreported these days, not only in New York but in other cities as well, this system does a great job in helping police to discover gunfire cases and react to them accordingly.
ShotSpotter system is one of the latest additions to the equipment of modern police forces along with body cameras, license plate scanners, hand-held fingerprint identifiers and GPS tracking devices. So to make sure your privacy rights are protected you can block ShotSpotter gunshot detection system along with other devices which might violate your personal rights.
answered Jun 12 '12 at 05:59