Sound transfer device used between a combustion engine chamber and an occupant cabin comprises a wall provided with an opening between a combustion engine chamber and an occupant cabin

摘要

Sound transfer device comprises a wall provided with an opening (10) between a combustion engine chamber (6) and an occupant cabin (5) and covered on one side with a plate and having a membrane surface damping unit (14) on the other side. Preferred Features: The plate faces the combustion engine chamber and the membrane surface damping unit faces the occupant cabin. The membrane surface damping unit has a support arranged on the wall so that it lies on the wall on one side and is surrounded by an intermediate layer on the other side.