Walls within a SCIF require acoustical protection measures and sound masking systems to protect SCI. True or False.

• A. True
• B. False
• C. Optional
• D. Not Required

Answer: (A)

Acoustic protection in SCIFs is essential to prevent eavesdropping on conversations involving SCI. Walls inside these facilities are designed or treated to achieve a specific sound transmission performance (STC) so that speech cannot be easily heard or understood on the other side. In many SCIF designs, additional sound masking is used. This introduces a carefully calibrated level of background noise that reduces the intelligibility of conversations without making the environment uncomfortable for occupants. The combination—proper acoustical construction and masking—helps ensure that discussing SCI cannot be overheard by people outside the protected area, including through walls, doors, or penetrations.

Therefore, the statement is true.