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- The Science Behind Noise Reduction Rating and its Importance in Various IndustriesUnderstanding Noise Reduction Rating (NRR) Noise Reduction Rating (NRR) is a measure of the effectiveness of hearing protection devices in reducing noise exposure. It quantifies the level of noise reduction provided by a specific device and is expressed in decibels (dB). The higher the NRR, the greater the potential for noise reduction. For example, if a device has an NRR of 25 dB, it means...0 Comments 0 SharesPlease log in to like, share and comment!
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