Which term best describes how well hearing protection blocks sound?

Which term best describes how well hearing protection blocks sound?

• A. Noise Resistance Ratings
• B. Noise Reduction Ratings
• C. Hearing Protection Ratings
• D. Sound Attenuation Index

Answer: (A)

Noise Reduction Rating is the standard term that describes how much sound a hearing protection device can reduce. It’s a specific, widely used measure expressed in decibels, reflecting the attenuation the device provides in laboratory testing. Because of that, it’s the clearest way to compare how effective earplugs or earmuffs are at blocking noise. The other phrases aren’t recognized in the industry for this purpose, or are too vague to indicate actual attenuation. In real-world use, remember that fit and how you wear the protection affect the actual protection you get, so the NRR is a best-case figure.

Noise Reduction Rating is the standard term that describes how much sound a hearing protection device can reduce. It’s a specific, widely used measure expressed in decibels, reflecting the attenuation the device provides in laboratory testing. Because of that, it’s the clearest way to compare how effective earplugs or earmuffs are at blocking noise. The other phrases aren’t recognized in the industry for this purpose, or are too vague to indicate actual attenuation. In real-world use, remember that fit and how you wear the protection affect the actual protection you get, so the NRR is a best-case figure.