Increasingly in the urban landscape, CCTV cameras do not film everything, even when they are able to rotate. A traffic accident or assault can take place at the foot of a surveillance pole, without it picking up anything, because its objectives were aimed in another direction. And for good reason: CCTV cameras are not allowed to record sounds.
However, a start-up based in Orleans, Sensivic, has set up a system for detecting abnormal sounds, which makes it possible to rotate a surveillance camera as soon as an abnormal noise is heard. Invited Monday of La France moves on Europe 1, its co-founder Pascale Demartini explains us how this technology works.
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"Our detectors build a soundscape from what they constantly listen to, where they are placed. They set up a predictive model, and as soon as the sound becomes radically different from the predictive model, the detector sends a notification to the security system, "explains the manager. "In this way, the security system can take this notification into account and direct the camera towards this sound source which can be a shot, a traffic accident, a broken window, deterioration of urban equipment".
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Above all, this abnormal noise detection system is capable of adjusting to already existing security devices. "We adapt to what exists. We didn't want to arrive in a city, and change the entire existing system," explains Pascale Demartini. Sensivic is mainly present in the south, where it equips 25 municipalities in PACA. Ultimately, the start-up also hopes to set up a platform that will store the number of incidents that have occurred on a site.