Topsonic Systemhaus GmbH is manufacturer of Aircraft Noise Monitoring Systems, Environmental Information Systems and Flight Track Analysis Systems. Founded in 1996 with the aim to develop aircraft noise monitoring systems according to the individual requirements of each customer, today Topsonic is a globally acting enterprise, still ownermanaged and characterised by a flat hierarchy and quick decisionmaking. The concept is based on the flexible implementation of current technologies in easy-to-use, reliable products tailored to the demands of modern airports and according to national and international legislation and standards.