Patent ID: 8636104
Filing Date: 2014-01-28
Classification: E04B

Abstract:
1. An acoustically absorptive panel comprising: a porous acoustical absorber having a planar configuration and a front facing, a support frame for mounting on a planar surface, an acoustically transparent front fabric stretch-mounted on said support frame, in parallel alignment with the front facing of said porous acoustical absorber, said front fabric having no more than 1.0 dB of attenuation in any one-third octave band from frequencies of 2500 Hz and lower, no more than 2.0 dB of attenuation in the 3150 Hz one-third octave band and above, and a texture capable of retaining a printed graphic image, and a forward air space bounded by the front facing of said porous acoustical absorber and said front fabric, said forward air space having a depth defined by the distance between the front facing of said porous acoustical absorber and said front fabric, said porous acoustical absorber, said air space and said front fabric collectively forming and acting as a forward acoustical absorbing chamber capable of absorbing a range of sound frequencies.