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Understanding Noise Reduction Ratings (NRR)

Guided tours of popular manufacturing facilities/factories, from breweries to aircraft
manufacturers, provide visitors with a unique and memorable behind-the-scenes look at the
manufacturing process. Some manufacturing facilities, however, can provide a challenge due
to their noise level. In these cases, a tour system equipped with noise reduction headphones
may be required to both help guests hear the tour guide and to provide guests with adequate
hearing protection. This document will provide an overview of how noise reduction rated
headphones are rated and how they perform based on their Noise Reduction Rating (NRR).

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