LIGHT WEIGHT SOUND ABSORBENT PANELS HAVING HIGH NOISE REDUCTION COEFFICIENT

摘要

A lightweight sound absorbing panel is disclosed. The panel comprises front and rear faces mounted to a supporting frame and having a core therebetween. The core is at least partially free airspace throughout a substantial portion of the area of the panel whereby weight reduction and increased sound absorption are obtained. The core is partially but not completely filled into a layer of sound absorbent material.