Event Detection System and Method of Use
AssigneeHyperion Technology Group, Inc.
InventorsGeoffery Ewald Carter, William Garth Frazier, David Ray Harris, Chad Matthew Williams, Gerald Wesley Godbold
Life of this patent
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Abstract
This invention provides a system and method that is used to detect gunfire or explosions in an area with a sound system such as a movie, stage or theater setting, by differentiating the sounds in the presentation from those occurring in the physical location and automatically alerting authorities of the event in the movie or stage theater setting.
Claims18
A method to detect an event in an area having a broadcasting audio system, wherein a presentation is occurring in the area using the broadcasting audio system;
- comprising the steps of:
- positioning a plurality of spaced apart acoustic sensor units in the area to provide an area audio signal;
- receiving a presentation audio signal directly from an output of the broadcasting audio system at a central processor;
- separately receiving the area audio signal and the presentation audio signal at the central processor;
- determining a differential audio data by subtracting the presentation audio signal from the area audio signal;
- and
- computing if an event is occurring in the area by analyzing the differential audio data for temporal and frequency spectrum content characteristics of the event, wherein the event is a gunshot or an explosion in the area.
A system for generating an alert for an event in an area with a broadcasting audio system comprising:
- at least one acoustic sensor unit configured to detect an audio signal of an event within the area;
- the broadcasting audio system;
- a central processing unit configured to receive an output from the least one sensor and an output from the audio system, wherein the central processor is configured to compute if the event is occurring in the area by analyzing the differential audio data for temporal and frequency spectrum content characteristics of the event, wherein the event is a gunshot or an explosion in the area and wherein the central data processing unit is configured to determine if the signal corresponding to the audio signal of an event within the area is a false event or is a trigger event;
- and a system output that causes an external alarm notification, if a trigger event is detected in the area.
Dependencies are inferred from the claim text.