Gunshot detection systems have been around for a few years, but the issue is that most of these systems function in the same, flawed way. Because of this, the vast majority of gunshot detection systems give false positives and lead to wasted time and resources. What causes these systems to give false reads? We discuss that below.
Why Gunshot Detection Systems Give False Positives
As mentioned, most gunshot detection systems work in the same way. In essence, they listen for loud, abrupt sounds in the environment, which then triggers an alert to the appropriate authorities. However, there are many potential triggers, especially if the sensor is located in an uncontrolled environment. Some law enforcement agencies have reported frustrations with false positives that responded to car crashes, fireworks, and other abrupt sounds. As a result, some agencies have stepped away from their gunshot detection systems in lieu of other solutions. In this sense, your typical system does not do a good job of accurately detecting gunshots.
Detecting Waveforms: Avoiding False Positives
Since we established that just listening for abrupt sounds isn’t very efficient, how can we accurately detect gunshots? By analyzing the energy levels and the waveform of the gunshot.
Every sound emits a unique frequency and amplitude, which can be graphed into what is known as a waveform. Several years ago, the Department of Energy released data about the waveforms associated with different ballistics. Because each energy level and waveform is unique, the ideal gunshot detection system can analyze these and run it against the database provided by the Department of Energy. False positives are then eliminated because the systems are no longer triggered by random sounds; they are triggered once the waveforms have been analyzed and identified. In addition to identifying gunshots, the system can identify which caliber gun was fired and pinpoint where the shot originated from.
Choosing the Best Gunshot Detection System
Many gunshot detection systems give false positives, but as we’ve discussed, that depends on how the system actually registers and analyzes sound. There is a variety of gunshot detection systems to choose from, but the best solution offers increased accuracy, is rapidly deployable, can be used in both indoor and outdoor environments, and provides the best integration capabilities. For us, it is the EAGL Gunshot Detection system, which checks off all the boxes. Contact J & M Security Solutions for more information or to view a demo of the system.