vibration energy continues to travel generally along path 150 through the sound absorptive wedge tip 64 thereby dissipating a portion of the energy the energy continues through face plate 49 and into the interior of the modular anechoic panel 40 as the energy from sound emissions 30 pass through the higher density multiple fiberglass layers 74 of wedge base 72 the energy is further dissipated finally any remaining energy substantially dissipates in air space 76 before impacting the transmission loss material 110 in similar fashion transmission loss material 110 and airspace 76 sufficiently dampen any noise that attempts to enter the anechoic chamber 20 from the exterior 23 through the back wall 43 in the illustrative embodiment each modular anechoic panel 20 constitutes a single 4 u2032 u00d7 8 u2032 u00d7 1 u2032 structural member of a wall ceiling or floor of an anechoic chamber 20 accordingly the modular anechoic panel system allows anechoic chamber 20 to be selectively assembled or disassembled accordingly anechoic chamber 20 need not be a permanent fixture and may selectively be broken down for easy storage according to one embodiment a modular anechoic panel system maps hemi anechoic chamber is provided having an interior noise level of less than about 22 db cutoff frequency of 150 hz.