. . . . "In a diffuse sound field, the Equivalent Absorption Area is that area of a surface having an absorption factor equal to 1, which, if diffraction effects are neglected, would, in the same diffuse sound field, absorb the same power." . . . . "http://www.rockfon.co.uk/acoustics/comparing+ceilings/sound+absorption/equivalent+absorption+area"^^ . . . . "A" . . . . . . "Equivalent absorption area"@en . . . "m2" . . . . "belongs to SOQ-ISO" . .