Shooter Detection Systems, LLC

Hewlett-packard Development Company, L.P.

Bose Corporation

3com Corporation

Raytheon Bbn Technologies Corp.

Ronald A Fowler

Richard Thomas Onofrio

Michael Sean McCormack

Robert McGurrin

Glenn Kosteva

Frank Ray Bachmann

James Scott Hiscock

Tobe Zetelmo Barksdale

Shiufun Cheung

Davis Pan

Anoop Tripathi

Richard James Mullen

Youhong Lu

Darby Edward Hadley

Ryo Maiguma

Matthew Patrick Daily

Karen J Taylor

Takao Nakayma

Bruce C Po

Katsumi Tomida

Petr Vicherek

Jenny Q Jin

Jeffrey Mazurek

Richard Ciosek

Francis J Fothergill

Techniques for low power gunshot sensor testing are disclosed. An acoustic generator and an infrared generator are disposed in a housing. The housing encompasses the acoustic generator and the infrared generator. The housing covers the gunshot sensor. The acoustic generator and the infrared generator are used for testing a gunshot sensor. The infrared generator and the acoustic generator are coupled to an activation circuit. A switch is coupled to the acoustic generator and the infrared generator. The switch provides activation control of the acoustic generator and the infrared generator. The infrared generator includes a light source operating in the near-infrared (NIR) band. The light source operating in the NIR band provides testing for a gunshot muzzle flash sensor. The infrared generator includes a light source operating in the mid-infrared (MIR) band. The light source operating in the MIR band provides testing for a passive infrared (PIR) sensor.

Low power gunshot sensor evaluation

Techniques for low power gunshot detection are disclosed. Infrared information is collected using a gunshot sensor device. The infrared information is collected using mid-infrared band sensing to provide motion detection. Additional infrared information is buffered using the gunshot sensor device. The additional infrared information is collected using near-infrared band sensing. The buffering is enabled by the motion detection. Acoustic information is collected using the gunshot sensor device. The collecting acoustic information is enabled by the motion detection. A gunshot is detected using the gunshot sensor device. The detecting is based on the additional infrared information and the acoustic information. The detecting includes monitoring the acoustic information to identify a high-intensity gunshot sound and correlating the high-intensity gunshot sound to the infrared information that was buffered. The gunshot sensor device uses cable-free communication to a network and notifies the network of a possible gunshot occurrence.

Low power gunshot detection implementation

Low power gunshot detection

Low power gunshot sensor testing

Techniques for cable-free indoor gunshot detection are disclosed. Acoustic information is collected within an indoor environment using a gunshot sensor device which uses cable-free communication to a network. The gunshot sensor device is powered by a battery. Infrared information from the muzzle flash of a firearm is collected using the gunshot sensor device. The infrared information is buffered within the gunshot sensor device. The gunshot sensor device is used to monitor the acoustic information and identify a high-intensity gunshot sound. The gunshot sensor device is used to match the high-intensity gunshot sound to the buffered infrared information. The matching includes making a correspondence between the gunshot sound and an infrared event that occurred in time before the gunshot sound. The gunshot sensor device is used to notify the network of a possible gunshot occurrence, based on an analysis of the high-intensity gunshot sound and the infrared event that was matched.

Cable-free gunshot detection

Techniques for gunshot analysis in an indoor environment are disclosed. A gunshot sensor is placed in the indoor environment. The gunshot sensor includes multiple individual sensors, including, but not limited to, an infrared sensor and an acoustic sensor. A firearm typically emits energy within the infrared spectrum, which is detected by the infrared sensor. A firearm typically further emits an acoustic pressure wave, which is detected by acoustic sensor. The gunshot detector can differentiate between a gunshot and a strobe from a fire alarm, based on information from the infrared sensor and acoustic sensors. The infrared sensor information and the acoustic sensor information are analyzed to determine that a gunshot has occurred in a timeframe between strobe events. The gunshot determination takes place independently of the location of the gunshot sensor. Reverberations and reflections add cumulatively to the collected acoustic and infrared information.

Gunshot detection in an indoor environment

Gunshot detection within an indoor environment is performed with video analytics. One or more position-independent gunshot sensors are deployed. Infrared and acoustic information is collected within an indoor environment for indoor gunshot detection with video analytics. The infrared information and the acoustic information are analyzed to determine a gunshot occurrence. Video analytics for tracking a suspected shooter of the gunshot is performed, based on the gunshot occurrence, using video that is collected. A person of interest is tagged, as a portion of the video analytics, for the purpose of tracking the person of interest. Video collection from one or more video streams is engaged, based on the detection of the gunshot. The video analytics uses image classifiers. The image classifiers are used to identify a gun type. The suspected shooter is identified based on the video analytics. An audio microphone is activated based on the detecting of the gunshot.

Gunshot detection within an indoor environment with video analytics

Techniques for gunshot sensor testing are disclosed. An acoustic generator and infrared generator are disposed in a housing. Soundproofing insulation is distributed around and/or within the housing to provide sound deadening which minimizes disturbance to building occupants during testing. The housing is placed in proximity to a gunshot sensor. A trigger device enables multiple modes of triggering both the acoustic generator and infrared generator. The generators stimulate corresponding components of a gunshot sensor. Input from the gunshot sensor components is evaluated to determine an operating condition of the gunshot sensor. The gunshot sensor verifies its operation by communicating with a server. The server further tests mass communication channels by issuing a test message. The test results indicative of the condition of the gunshot sensor are sent to a mobile device for an operator to review.

Testing of gunshot sensors

Techniques for gunshot detection in an indoor environment are disclosed. A gunshot sensor is placed in the indoor environment. The gunshot sensor includes multiple individual sensors, including, but not limited to, an acoustic sensor and an infrared sensor. A firearm typically emits energy within the infrared spectrum when fired. This energy is detected by the infrared sensor. A firearm also typically emits an acoustic pressure wave when fired. The acoustic sensor detects the acoustic pressure wave. A strobe from a fire alarm occurring near in time to the gunshot can cause false gunshot detection. The infrared sensor information and the acoustic sensor information are analyzed to determine that a gunshot has occurred. The gunshot determination takes place independently of the location of the gunshot sensor. The strobe occurrence is evaluated to provide gunshot false alert detection. Reverberations are not used in the determination of a gunshot false alert.

Gunshot detection within an indoor environment

Indoor gunshot detection analysis is performed in the presence of a fire alarm. A gunshot sensor, which includes infrared and acoustic sensors, is used to detect an infrared pulse, whether the pulse originates from a muzzle flash or a fire alarm strobe. The infrared pulse is determined to correspond to a strobe occurrence. An evaluation determines that a gunshot did or did not occur based on the strobe occurrence. In another embodiment, a gunshot is detected while the fire alarm is occurring, where the gunshot occurs at a different time from the strobe occurrence and can be sensed by the acoustic sensor. A fire alarm strobe frequency and duration are determined, and further strobe occurrences are edited. Editing detection edits out a sensing time window by the infrared sensor. When the strobe stops, editing is eliminated, but if the strobe restarts, then editing is resumed.

Indoor gunshot detection analysis during ongoing fire alarm

Indoor gunshot detection is performed using video analytics. Infrared and acoustic information are collected within an indoor environment using a gunshot sensor. A gunshot is detected, in the indoor environment, based on the infrared and the acoustic information. Video collection is engaged based on the detecting of the gunshot. The video collection is from a video stream. In embodiments, the video stream is a buffered stream. Video analytics are performed for tracking a suspected shooter of the gunshot using the video that is collected. The suspected shooter is identified based on the video analytics. In embodiments, an audio microphone is activated based on the detecting of the gunshot. The suspected shooter is tracked based on the audio microphone. A person of interest is tagged and tracked by an operator of the gunshot detection system. Direction of the gunshot can be determined relative to the gunshot sensor unit.

Indoor gunshot detection with video analytics

A vehicle audio system that includes a source of audio signals, which may include both entertainment audio signals and announcement audio signals, speakers for radiating audio signals, and spatial enhancement circuitry comprising circuitry to avoid applying spatial enhancement processing to the announcement audio signals.

Manipulating spatial processing in an audio system

Method and system for providing voice assisted configuration on an IP telephone in a non-DHCP environment includes detecting a data packet including the IP telephone terminal MAC address, transmitting a configuration terminal MAC address in response to detected IP telephone MAC address, and configuring the IP telephone terminal in the non-DHCP layer 2 environment by assigning an IP address, a gateway address, a subnet mask, and additional parameters such as audio and noise level adjustment so that the IP telephone terminal is configured to fully function in the data network. Additional VOIP telephone terminals in the local area network may be configured by the configuration terminal.

Method and system for providing voice assisted configuration on an internet protocol (IP) telephone

Method and system for providing pass through web configuration on an IP telephone comprising the steps of establishing a data communication path in a data network, detecting a configuration parameter in the data communication path, extracting and also additionally, storing the detected configuration parameter, and performing a configuration procedure of an IP telephone associated with the configuration parameter operatively coupled to the data network is disclosed. The configuration parameter may include an Internet Protocol (IP) address, a key value pair associated with an IP address, or a valid communication address.

Method and system for providing pass through web configuration on an internet protocol (IP) telephone

Comfort noise, such as can be used in voice communications can be generated using methods in the frequency domain and/or in the time domain. In various embodiments, a comfort noise spectrum can be generated in the frequency domain as the product of a background noise sample and a random noise sample. In other embodiments, the comfort noise can be generated directly in the time domain as the convolution of a background noise sample and a random noise sample.

Growing community of inventors

Westford, MA, United States of America

Ronald A Fowler