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SHOTSPOTTER TECHNOLOGY

How it Works

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sensors

GUNFIRE SENSORS

We design, build and operate gunfire sensing technology for communities and buildings worldwide.

assessment

SOFTWARE & HUMAN ASSESSMENT

Our outdoor acoustic sensors identify and time-stamp impulsive noises; the system triangulates the location of the sound source to within 25 meters and runs features of the sound through machine classification; our Incident Review Center (IRC) human experts confirm the machine classification and publish an alert - typically within 30-45 seconds of the trigger pull.

Our indoor sensors listen for the impulsive sound of gunfire and look for the infrared flash from the barrel; they are designed to automatically alert security personnel within ten seconds, without any human assessment.

push notifications

PUSH NOTIFICATIONS

We notify law enforcement and first responders via a push notification direct to our browser app, mobile app, SMS or email, detailing the precise location of the gunfire with a full set of contextual information about the incident and providing immediate, real-time actionable gunfire intelligence.

ShotSpotter Key Features

COMPREHENSIVE COVERAGE

  • The only wide area gunshot detection technology capable of covering large and complex geographies.
  • Can easily be expanded to cover any size area outdoors.
  • Indoor gunshot detection can be scaled to any coverage area and any number of buildings.
  • Wide area and indoor gunshot detection seamlessly blended into one service.

REAL-TIME, PRECISE ALERTS

  • Notification within seconds of a gunshot, providing data on the time and location of the shooting and the number of shots fired.
  • Dot on a map pinpoints the exact location of the gunshot and the nearest street address for an outdoor incident. For indoor, a dot on a building’s floor plan locates the gunshot.
  • Valuable tactical information is also provided about the scene of the incident, such as number of shooters or the use of fully automatic and high-capacity weapons.

FORENSICALLY-SOUND DATA

  • Our solutions provide authorities critical evidence for investigations and prosecutions.
  • Detailed Forensic Reports (DFRs) provide law enforcement and prosecutors with detailed, court-admissible audio and incident analyses.
  • Expert testimony, to review details of the DFRs and provide technical expertise regarding our technology, is also included.

ANNUAL SUBSCRIPTION TO A CLOUD-BASED SOLUTION

  • Offered as an affordable, annual subscription-based service.
  • We design, build and operate the sensors and host the software within the cloud.
  • Backed by an experienced Incident Review Center (IRC) staff that provides immediate notification of gunfire at any time of day -- 24 hours a day, seven days a week, 365 days a year.

Learn More about ShotSpotter Mobile

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ShotSpotter Key Benefits

EXPEDITED RESPONSE TO GUNFIRE

Alerts are typically sent within 30-45 seconds of confirmed gunfire outdoors and within 10 seconds indoors, enabling fast response to a precise location.

PREVENTION & DETERRENCE OF GUN VIOLENCE

The increased success responding to gunfire incidents quickly creates a long-term deterrent that can decrease the overall prevalence of illegal gunfire.

IMPROVED COMMUNITY RELATIONS & COLLABORATION

Cities report an improved ability to establish and foster a cooperative and trusting relationship between police and the communities they serve.

CLOUD-BASED INFRASTURCTURE

A cloud and subscription-based service means customers do not need to design, install or maintain their own complex infrastructure.

INTEGRATION CAPABILITY

Simple API supports integration with customer systems from video management to computer-aided dispatch, records management and more.

GUN VIOLENCE DATA COLLECTION

Detailed gun crime pattern analysis and additional data is provided that can help cities address pervasive problems in areas of high illegal gun activity.

ShotSpotter Software: The Foundation of the Solution

DETECTION

First, highly-specialized software analyzes audio signals in our intelligent sensors for potential gunshots.

  • The software filters out ambient background noise, such as traffic or wind, and looks for impulsive sounds characteristic of gunfire; we call these pulses.
  • If the sensor detects a pulse, it extracts pulse features from the waveform, such as sharpness, strength, duration and decay time.
  • The sensor then sends these features to our cloud servers as part of a data packet that includes the location coordinates of the reporting sensor and the precise time-of-arrival and angle-of-arrival of the sound.
  • For indoor sensors, infrared pulse features are also extracted and sent to the cloud.

CLASSIFICATION

After the software determines the location of the sound source, it analyzes the pulse features to determine if the sound is likely to be gunfire.

  • Our algorithms consider pulse features, the distance from the sound source, pattern matching and other heuristic methods to evaluate and classify the sound.
  • The machine classifier is trained and validated against a large database of known gunfire and other impulsive community sounds.
  • We continue to add new data to our machine-learning database from the incidents reviewed by our acoustic experts in our Incident Review Center (IRC) process. ShotSpotter has the largest dataset of community gunfire and other impulsive events gathered from the communities we serve.
  • Once an outdoor incident is classified as likely gunfire, it is sent to the acoustic experts in our Incident Review Center (IRC) for additional analysis and confirmation.
  • Acoustic experts also annotate the alerts with additional information that may be helpful to first responders, such as whether there are multiple shooters or if a high-capacity or fully automatic weapon is being used.
  • For indoor gunfire, information from the acoustic and infrared transducers is sufficient to make a reliable machine classification without review by our Incident Review Center (IRC).

NOTIFICATION

Finally, the system pushes the alert notification to law enforcement and emergency responders.

  • Outdoor incident notifications are pushed when the incident is confirmed as gunfire by one of our acoustic experts, typically within 30-45 seconds of the trigger pull.
  • Indoor gunshot alerts are pushed without any human assessment within 10 seconds of the trigger pull.
  • Gunfire alerts are pushed to our browser app, mobile app, SMS or email.

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