Technical front elevation of a double-walled hemi-anechoic chamber incorporating the IAC Microdyne® absorber system with PlanarChoic™ Flat Anechoic Absorber lining. The drawing illustrates the room-within-room construction, acoustically isolated enclosure, double-leaf acoustic access doors, structural support system, and absorber integration. The configuration is designed to maximize usable test volume while providing controlled hemi-free-field measurement conditions for precision acoustic testing and engineering applications.