Gunshot detection through the microphones your cameras already have — no dedicated acoustic sensors to buy or wire. A shot raises an alert in seconds, one click from the exact moment of footage, and the system automatically preserves an evidence clip before anyone has to think to save it.
The hardest problem in gunshot detection isn't hearing a bang — it's not crying wolf at every firework and slammed door. Nevtech runs a two-stage acoustic model: a broad screen finds impulse sounds, then a classifier trained on four classes makes the call.
The classifier explicitly learns what gunfire is not — fireworks, backfires, dropped pallets — instead of alerting on anything loud. Fireworks get their own score precisely because they're the classic false alarm.
Enable audio detection per camera — the parking structure, the perimeter, the lobby. The camera's microphone must be on; nothing else changes about the camera.
Detections below the confidence floor are dropped — checked at the sensor and re-checked at the server, so a misconfigured worker can't flood your alerts with maybes.
A detection isn't a row in a report you read tomorrow. It's a live alert with the camera's name on it, a persistent entry in the alerts feed — and a direct link that opens playback at the exact second of the sound.
Operators watching the console see the alert as it happens; everyone else finds it in the alerts feed, filterable by day, type, and camera — every filter a shareable link.
Every detection automatically cuts a clip — 15 seconds before the sound through 30 seconds after — and keeps it for 90 days, independent of the footage window. The evidence exists even if nobody touches the system that night.
Gunshot alerts follow camera access: a site-restricted operator gets that site's alerts, nothing else. Alerts about cameras you can't watch don't exist for you.
The alert reads "possible gunshot" and lands one click from the footage, because the fastest safe outcome is a trained person seeing the scene within seconds and deciding. Detection is tuned to your site during onboarding — microphone placement, distance and the acoustic character of the property — and the classifier carries a dedicated fireworks score so the season doesn't fill your feed. Look, confirm, act: the whole loop is seconds long.
We'll demo the full loop — detection, alert, footage, evidence clip — on a live system, and answer every question you bring to it.
Book a demoOr call (317) 508-9493 · cody@nevtech.io
Acoustic gunshot detection is an operator aid, not a life-safety system, an alarm service, or a substitute for emergency dispatch. Detection performance depends on microphone quality, placement, distance, and acoustic environment, and false positives (notably fireworks) and missed detections can occur. Alerts should be verified against footage before action is taken.