What is the primary objective of sound insulation in terms of interior noise levels?

• A. To increase interior noise levels
• B. To maintain current exterior noise levels
• C. To reduce interior noise levels
• D. To improve exterior soundproofing

Answer: (C)

Sound insulation aims to lower interior noise levels by reducing how much outside sound gets into a room. The goal is to create a quieter indoor environment, improving comfort, privacy, and speech intelligibility. Increasing interior noise would defeat the purpose, and simply maintaining exterior noise levels doesn’t address the amount of sound inside. While better exterior soundproofing can help reduce what penetrates the building, the primary objective in terms of interior noise is to reduce the noise that reaches the interior.