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The presence of streamwise vorticity in high speed gaseous jets can be considered beneficial in reducing jet noise. The inner walls of nacelles for turbo-fan propulsion systems are acoustically treated, in order to reduce the amplitude of turbomachinery and combustor noise that propagates through the duct. The German Aerospace Center (DLR) proposed a patent for a bias-flow liner device, called VoGeL (for Vortex Generating Liner) see Ref. [1], where the bias flow also aims the generation of streamwise vorticity in the flow duct. The device has been realized and studied on a single prototype, in the framework of static jet noise in isolated condition and at the presence of a flat plate. We propose a review of the work made by the DLR on the Vortex Generating Liner, Ref.[2, 3]. We also realize and describe a small scale experiment to realise a VoGeL prototype in the inner wall of a round nozzle and demonstrate the effects on static jet noise emissions.[1] A. Bassetti, “Vorrichtung und Verfahren zur Beeinflussung einer Fluidhauptströmung und Düse.” Deutsches Patent-und Markenamt DE102021209284A1.[2] H. A. Siller, W. Hage and A. Bassetti; “Preliminary investigations of jet installation noise influenced by a vortex generating liner at the nozzle inner wall.” The DJINN-ENODISE conference: Aeroacoustic Installation Effects in Conventional and New Aircraft Propulsion Systems, 2023-11-22 - 2023-11-24, Berlin, Deutschland.[3] H. A. Siller, W. Hage, C. Jente and Alessandro Bassetti, “Jet-noise investigations in a small scale facility.” 28th AIAA/CEAS Aeroacoustics Conference, June 2022, Southampton, United Kingdom.