Panel shaped element, specifically for sound absorbing structures and a sound absorbing installation

摘要: The panel shaped element finds application specifically for sound absorbing installations. It includes recesses proceeding from both its main surfaces which meet within the and partially overlap each other. at one of sides have, thereby, shapes differ other side thereof, such that form passages through element. are arranged in rows a raster-like fashion. One bores grooves. thereby parallel to grooves open into Therefore, this can quite easily be selectively designed cope with specific demands circumstances by changing relevant diameters.