SoundThinking
SoundThinking is a U.S. public-safety technology company best known for its ShotSpotter acoustic gunfire-detection service.
Last updated October 14, 2026
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Overview
SoundThinking, Inc. is a Fremont, California-based security and public-safety technology company formerly known as ShotSpotter Inc. Its principal product, ShotSpotter, uses distributed acoustic sensors, automated signal-processing systems and human review to identify sounds believed to be gunfire, estimate their location and transmit alerts to participating police departments. The service is marketed as an investigative and dispatch-support tool intended to help officers respond to gunfire that may not generate emergency calls. The company originated in the 1990s when Robert Showen developed acoustic gunfire-location prototypes while working at SRI International. A company was established in 1996 and early testing took place in Redwood City, California. In 2005, the business merged with Centurist Systems, a company developing acoustic systems for locating military snipers. Centurist contributed patented location technology, and its chief executive, Scott Manderville, became chairman. James Beldock joined as chief executive in 2003 during a turnaround period, and Ralph Clark became CEO in 2010. ShotSpotter expanded through contracts with American cities, police departments and some educational campuses. Sensors are generally installed in networks across selected neighborhoods, with data transmitted through cellular networks. The system's operating process combines algorithmic classification and geolocation with review by company personnel, who may confirm, reject or modify an alert before it is sent to law enforcement. The company has said that the service is not intended to identify suspects or serve as a standalone forensic instrument, although prosecutors and police have used alert records and related audio in criminal investigations and court proceedings. The company became publicly traded in June 2017. It later authorized a share-repurchase program and reported revenue growth as its geographic coverage increased. Reference material for 2021 reported gross revenue of $58.2 million, compared with $45.7 million in 2020 and $40.8 million in 2019; the same material reported a 2021 net loss of $4.4 million. Chicago and New York City represented substantial portions of revenue at that time. These figures are historical and do not describe the company's current financial position. In April 2023, ShotSpotter changed its corporate name to SoundThinking. The rebrand was presented as a move toward a broader approach to reducing gun violence, while ShotSpotter remained the name of the acoustic detection product. In 2023 the company also announced that it had begun absorbing parts of Geolitica, formerly known as PredPol, including engineering personnel. This connected the company more closely with predictive-policing and public-safety analytics products beyond acoustic detection. SoundThinking operates in a politically and legally contested field. Supporters argue that rapid alerts can help police locate shootings that would otherwise go unreported and cite particular incidents in which the system aided emergency response. Critics, researchers, civil-liberties organizations and some public officials have questioned the system's accuracy, transparency, privacy implications, racial distribution, cost and effect on violent crime. Several studies have reported little or no statistically significant effect on shootings, arrests or homicide, while other analyses have found increased detection or faster notification without demonstrating reduced violence. Investigations have also reported large proportions of alerts that did not lead to confirmed gun-related incidents. These disputes have influenced contract renewals, litigation and calls for independent evaluation. The company remained active under the SoundThinking name, with ShotSpotter continuing as its best-known commercial offering. Its business model principally involves selling technology and related services to public agencies, especially law-enforcement organizations, rather than selling consumer products.
History
SoundThinking traces its origins to acoustic gunfire-location work developed by Robert Showen during the 1990s at SRI International. Showen established a company in 1996 and tested early systems in Redwood City, California. The concept was to use multiple microphones and signal-processing techniques to distinguish impulsive sounds, estimate their position and notify authorities. The company developed relationships with municipalities and police agencies during a period when urban departments were seeking tools that could identify shootings not reported through emergency calls. A significant corporate turning point came in 2003, when James Beldock joined as chief executive in a turnaround role. In 2005, the company merged with Centurist Systems, which had been developing acoustic sniper-location technology for military applications. Centurist's technology included a patented location algorithm, and its chief executive, Scott Manderville, became chairman of the combined company's board. The merger helped consolidate the acoustic-location capabilities that became central to the ShotSpotter product. The company's system evolved into a network of outdoor acoustic sensors installed across selected areas. Sensors transmit sound data to automated systems that assess whether an event resembles gunfire and calculate a likely location. Human reviewers then examine incidents and can confirm or reject alerts before they are sent to police. The business generally sells subscriptions and related services to public agencies. By 2021, reference material described deployments in 125 cities and 14 campuses, covering approximately 911 square miles. By 2022, the service was reported to have been used by more than 130 U.S. cities and law-enforcement agencies. Ralph Clark became CEO in 2010, and the company went public in June 2017. It subsequently expanded coverage and reported increasing revenue during 2019–2021. The company also approved a stock-repurchase program in 2019 and had repurchased $8.3 million of shares by the end of 2020, according to the supplied reference material. In 2021, it reported gross revenue of $58.2 million and a net loss of $4.4 million. The company attributed some of the loss to contract nonrenewals, legal expenses, public-relations activity and lobbying costs. ShotSpotter's expansion was accompanied by disputes over effectiveness, transparency and civil liberties. Researchers have produced mixed findings: some work reported improved detection or response, while several studies found no significant reduction in firearm-related homicide, violent crime, arrests or case-clearance rates. Critics have focused on the large number of alerts that do not lead to confirmed gunfire, the concentration of sensors in predominantly Black and Latino neighborhoods, the use of human review and manual reclassification, and the possibility that police may use alerts to justify stops or searches. Privacy advocates have also questioned whether continuously operating microphones capture incidental conversations. A Toronto authority declined to adopt the technology after raising concerns under Canada's constitutional search protections, while Oakland fined the company $5,000 over illegal lobbying in 2014. Indoor gunfire detection was discontinued in 2018. Individual legal cases intensified scrutiny. In the 2017 Rochester shooting of Silvon Simmons, an alert was initially classified as a helicopter and was later revised several times after police involvement; a judge characterized the evidence as flawed. In a Chicago murder prosecution involving Safarain Herring, an alert initially classified as a firework was later changed to gunfire and its location was revised. Prosecutors withdrew the technology evidence rather than subject it to a proposed Frye hearing, and the defendant spent 11 months in jail before the case was dismissed for insufficient evidence. A ShotSpotter alert also contributed to the police response preceding the 2021 killing of 13-year-old Adam Toledo in Chicago. In 2022, the MacArthur Justice Center filed a class-action lawsuit alleging unconstitutional and racially discriminatory use of the system in Chicago. In April 2023, ShotSpotter Inc. rebranded as SoundThinking. The company said the new name reflected a broader, more holistic approach to gun-violence reduction, but continued to market its acoustic detection service under the ShotSpotter name. In the same period, it moved toward incorporating additional public-safety analytics through work with Geolitica, formerly PredPol. The new corporate identity therefore covers both the established acoustic-alert business and a wider ambition in data-driven public safety. The brand remains controversial. A 2023 Houston investigation, a 2024 New York City audit and additional academic studies raised questions about false positives, police-resource allocation and measurable public-safety benefits. Campaign Zero's #CancelShotSpotter campaign has opposed contract renewals, and elected officials have called for investigations and cancellations. SoundThinking continues to operate as an active public-safety technology company, but its future growth depends on public-agency procurement, evidentiary credibility, independent evaluation and its ability to demonstrate benefits beyond simply increasing the number of detected gunfire reports.
- 2024
Chicago contract ends
[1]Chicago did not continue using ShotSpotter after sustained criticism and controversy over its police applications.
- 2023
Rebrand to SoundThinking
[1]ShotSpotter Inc. adopted SoundThinking as its corporate name while retaining ShotSpotter as a product brand.
- 2023
Geolitica integration begins
[1]The company began absorbing parts of Geolitica, formerly PredPol, including engineering staff.
- 2018
Indoor product discontinued
[1]The company discontinued its indoor gunfire-location technology.
- 2017
Public listing
[1]ShotSpotter became a publicly traded company in June.
- 2010
Ralph Clark becomes CEO
[1]Ralph Clark was named chief executive.
- 2005
Merger with Centurist Systems
[1]The company merged with Centurist Systems, bringing in military-oriented acoustic-location technology and a patented location algorithm.
- 2003
Turnaround leadership begins
[1]James Beldock joined as chief executive during a corporate turnaround.
- 1996
Company founded
[1]Robert Showen established the company after developing acoustic gunfire-location prototypes at SRI International.
Products and positioning
A public-safety technology provider positioned around real-time gunfire detection, data-supported police response and broader technology-assisted approaches to reducing gun violence.
Acoustic gunfire detection
ShotSpotter
ShotSpotter is SoundThinking's signature networked gunfire-detection service. Outdoor sensors capture loud impulsive sounds and transmit relevant data to automated systems that estimate location and assess whether the event may be gunfire. Company personnel review alerts before passing them to subscribing law-enforcement agencies. The service is intended to supplement emergency calls and conventional investigations, although its alerts and related recordings have also appeared in criminal cases. Its accuracy, privacy implications, racial distribution and measurable effect on violence have been repeatedly debated.
Acoustic security technology
Indoor gunfire detection
SoundThinking previously offered technology intended to detect gunfire indoors. The company discontinued that offering in 2018.
Public-safety analytics · 2023
Geolitica integration
Following the company's 2023 announcement, SoundThinking began absorbing parts of Geolitica, formerly known as PredPol. The move broadened the company's technology interests beyond acoustic alerts toward data-driven public-safety and predictive-policing analytics.
Controversies
2024
Accuracy and effectiveness investigations
Academic studies, journalistic investigations and a New York City audit questioned false-positive rates, manual alert changes, police-resource use, privacy and whether the technology reduces violent crime.
2022
Chicago constitutional class action
The MacArthur Justice Center filed a class action alleging that Chicago's use of ShotSpotter produced unconstitutional stops and arrests and operated in a racially discriminatory manner.
2021
ShotSpotter sues Vice Media over reporting claims
ShotSpotter filed a $300 million defamation suit against Vice Media, accusing the outlet of misrepresenting the efficacy of its gunshot-detection technology and making inaccurate data-manipulation allegations. The allegations are claims in the lawsuit, not a stated court finding.
2020
Chicago murder-case evidence challenge
An alert initially classified as a firework was changed to gunfire and its location was later revised. Prosecutors withdrew the evidence rather than face a proposed scientific admissibility hearing.
2017
Rochester alert reclassification dispute
In the Silvon Simmons case, an alert was initially identified as a helicopter and later revised multiple times after police involvement. A judge described the company's evidence as flawed.
2014
Oakland lobbying fine
The company was fined $5,000 for illegally lobbying the city of Oakland.
Marketing campaigns
- 2025#CancelShotSpotter mobile billboards
Little Rock, Arkansas
Campaign Zero used mobile billboards in Little Rock to oppose renewal of a ShotSpotter contract, arguing that the service does not prevent crime and cannot reliably distinguish gunshots from other loud sounds.
- 2024#CancelShotSpotter
United States
Campaign Zero's #CancelShotSpotter initiative challenges the company's claims about accuracy and crime prevention and urges municipalities not to renew contracts.
Outcome. The campaign continued public opposition to municipal deployments and used advertising in cities considering contract renewals.
Brand decisions
2024
Chicago contract discontinuationOtherBackground
Chicago faced sustained criticism concerning alert accuracy, racialized deployment and the technology's role in police responses.
Action taken
Chicago did not continue its ShotSpotter contract.
Aftermath
The decision became a prominent example of municipal resistance to the technology, while other cities continued to use or evaluate it.
2023
Corporate rebrandStrategyBackground
The company sought to present itself as broader than a single gunfire-detection product.
Action taken
ShotSpotter Inc. changed its corporate name to SoundThinking but kept ShotSpotter as the product name.
Aftermath
The brand broadened its stated focus toward holistic gun-violence reduction and public-safety analytics.
2023
Integration of Geolitica personnel and technologyM&ABackground
SoundThinking wanted to expand beyond acoustic detection into additional data-driven public-safety tools.
Action taken
The company began absorbing parts of Geolitica, formerly PredPol, including its engineering team.
Aftermath
The move increased the breadth of SoundThinking's public-safety technology portfolio.
2017
Go publicStrategyBackground
The company had expanded municipal and law-enforcement deployments and sought public-market financing and visibility.
Action taken
ShotSpotter became publicly traded in June 2017.
Aftermath
The company continued expanding coverage and later reported revenue growth, while remaining dependent on public-agency contracts.
Recent events
Reported
ShotSpotter sues Vice Media over reporting claims[2]
ShotSpotter filed a $300 million defamation suit against Vice Media, accusing the outlet of misrepresenting the efficacy of its gunshot-detection technology and making inaccurate data-manipulation allegations. The allegations are claims in the lawsuit, not a stated court finding.
Reported
ShotSpotter partners with ATI on trafficking investigations initiative[3]
Anti-Trafficking International teamed up with ShotSpotter to support its National Human Trafficking Intelligence Center. ShotSpotter said it would deploy ShotSpotter Investigate for a one-year pilot, where the product would serve as the center’s digital case folder.
- Unconfirmed
ShotSpotter launches SiteSecure for Retail[4]
ShotSpotter launched its SiteSecure for Retail program to provide outdoor gunfire detection for retail chains and malls.
- Unconfirmed
ShotSpotter partners with the Loss Prevention Foundation[4]
ShotSpotter partnered with the Loss Prevention Foundation to provide resources and expertise to retail loss prevention and security professionals as part of the SiteSecure for Retail program.
Reported
ShotSpotter appoints three vice presidents[5]
ShotSpotter announced the appointment of Paul Reeves as Vice President of Customer Success, Joe Rodriguez as Vice President of Sales, and Phil Dailly's promotion to Vice President of Sales, Solutions Group.
Sources5 sources
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