What is Noise Reduction Rating (NRR) in Hindi | How to chose best Hearing Protection Using NRR | NRR

what is Nrr and how to calculate the NRR Ratings of any hearing protection device.
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[@rejulalalat2740]

Simple and informative. Thanks. But snr is signal to noice reduction. We just illustrated about nrr but video picture seen about snr

[@aquibkhan9526]

Sir Seven jo ham minus kar rahe hai too seven hi ham kyu minus karte hai or seven ko ham kiya bolenge

[@ghjilani786]

Sir 120 decibel maximum use 70 to 80 konsa no ka ear muff use karna chahiye

[@knowledgeguidance]

Muje samaj me nahi aa raha hai ki aap kya puchna chah rahe ho Earmuff ke no. Bhi nahi hote hai... Please ask again..