Sound absorbing panel comprises a number of sound absorbing elements open at the front and arranged between a perforated plate and a rear wall of a frame in such a way that there are alternate large elements and small elements

摘要

Sound absorbing panel comprises a rectangular frame (1) and a perforated plate (3) covering the front side in which a number of tightly packed conical holes (31) widening toward the front are arranged. A number of sound absorbing elements (2, 22) open at the front are arranged between the perforated plate and a rear wall of the frame in such a way that there are alternate large elements (22) and small elements (2). An Independent claim is also included for a sound absorbing wall comprising sound absorbing panels.