Zvook is a Ukrainian defense technology company specializing in the development of passive acoustic monitoring systems for both aerial and underwater environments. The company builds sensor networks based on passive detection – unlike active radars or sonars, these systems emit no signals into the environment and instead rely entirely on ambient sound analysis. Zvook develops acoustic sensors and platforms designed to detect and track aerial targets, such as cruise missiles and Shahed-type drones, which integrate with broader air defense systems for early warning, while also researching and developing hydrophones for passive underwater acoustic surveillance.
