Strukturierte Formkörper zur Schallabsorption

摘要

The invention relates to structured moulded bodies for use as wall linings and intended for broad-band sound absorption. The moulded bodies consist of an open-cell foam having a solid skeleton which oscillates in a resonance-like manner when exposed to low frequencies. The invention is characterized in that in front of or on a level base layer (1) which is situated on the wall side and has a skeleton resonance which can be adjusted in accordance with the parameters of said layer, a column structure (2) is provided for which has vertically and transversely unsymmetrically distributed recesses in the manner of broadband matched damper gaps. The height of the column corresponds approximately to the thickness of the base.