Cameras Will Track Gunshots In L.A.

A new surveillance system can recognize the sound of a nearby gunshot -- and identify the shooter.

1 minute read

December 6, 2004, 9:00 AM PST

By Chris Steins @planetizen


An engineer from the University of Southern California uses his expertise with nerve cells to create a surveillance system that can recognize the sound of a nearby gunshot.

"In a unique pilot program, L.A. and Chicago will deploy test units in high-crime areas... SENTRI uses acoustic recognizers, posted in trios or larger groupings on utility poles or other listening posts, which are tuned to certain specific warning sounds with extremely high accuracy...

Field tests with real weapons have shown 95 percent accuracy with respect to gunshot recognition, and 100 percent accuracy with respect to centering an attached camera on the shooter for those recognized gunshots."

Thanks to Chris Steins

Tuesday, November 30, 2004 in University Of Southern California

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

April 30, 2025 - Diana Ionescu

Close-up on Canadian flag with Canada Parliament building blurred in background.

Canada vs. Kamala: Whose Liberal Housing Platform Comes Out on Top?

As Canada votes for a new Prime Minister, what can America learn from the leading liberal candidate of its neighbor to the north?

April 28, 2025 - Benjamin Schneider

Person in yellow safety suit and white helmet kneels to examine water samples outdoors on a lake shore.

USGS Water Science Centers Targeted for Closure

If their work is suspended, states could lose a valuable resource for monitoring, understanding, and managing water resources.

May 1, 2025 - Inside Climate News

View of cars in traffic from behind with visible tailpipe emissions

House Moves to Rescind California’s Emissions Standards

The state has been allowed to set its own emissions goals, including a mandate to transition to electric or zero-emissions vehicles by 2035.

May 5 - Streetsblog California

View of Portland skyline with green trees in foreground.

Portland Proposal Would Suspend Development Fees to Spur Housing Construction

Oregon Gov. Tina Kotek and Portland Mayor Keith Wilson announced their policy plan Thursday, with the goal to jumpstart housing construction.

May 5 - Oregon Capital Chronicle

Honolulu Community College building.

Honolulu Community College Celebrates Culture and Sustainability

Honolulu Community College brought together more than 320 students, staff, and community members for a day of Hawaiian cultural activities, music, and sustainability-focused learning at its annual Hoʻolauleʻa celebration.

May 5 - University of Hawai'i News

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.

Senior Manager Operations, Urban Planning

New York City School Construction Authority

Building Inspector

Village of Glen Ellyn

Manager of Model Development

Central Transportation Planning Staff/Boston Region MPO