At the Elasis research centre in Pomigliano, a wide variety of tests are carried out to support the design of systems, components, etc. that are to be manufactured and placed on the market, in order to make the vehicle safer. In this area, Natek has designed and built a semi-anechoic chamber to perform both safe engine operation tests and data recording, but above all to analyse the noise emission of endothermic engines during their operation, in order to study the best solution for soundproofing the vehicle.