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  • Enclosures designed to provide a consistent and controlled acoustic environment and keep background noise at an acceptably low level in order to provide a calibrated acoustical test area that meets requirements for clinical audiometry or research. The walls consist of solid steel panels on the outside, perforated steel panels on the inside, and an insulating material in between. Single-wall booths are constructed from a single-wall and layer of sound-absorbing material and are used primarily for pure tone air conduction testing. Double-wall booths employ \'booth inside a booth\' construction, which further reduces outside noise interference, and are preferred for bone conduction, sound field, and speech testing.
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