Improved acoustical wall panel

摘要: An acoustical wall panel (10) has a core of plurality layers glass fiber (12) pressed together and having density ranging from approximately two pounds per cubic foot at the front surface to six rear surface. A cavities (13) are formed on (24) core. The is covered with fabric (43), septum (27) provide barrier transmission sound pressure waves. cross-sectional area, depth spacing selected improve absorption in intelligence range speech while less lower frequency permit desirable background or ambient noise exist. shape also provides smooth continuously changing curvature cavity side walls (22) increase area enhance capacity absorb flanking angles incidence.