noise reduction rating


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noise reduction rating

[′nȯiz ri‚dək·shən ‚rād·iŋ]
(acoustics)
A common method for expressing values of noise reduction or attenuation provided by different types of hearing protectors; values range from 0 to approximately 30, with higher values indicating greater amounts of noise reduction. Abbreviated NRR.
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Before closing I must mention that the noise reduction ratings given to both ear plugs and ear muffs by their manufacturers are often based on their attenuation of continuous noise (such as in a factory) and may not be a true indication of the protection they offer from impulsive noise such as a firearm.
The earmuff performs as a passive earmuff with a Noise Reduction Rating of 25 if an audio device is not plugged in.
327 Federal Magnum with your hearing protected by a pair of Howard Leight Ultraslim earmuffs with a noise reduction rating of 23 dB and your eyes protected by a pair of Wiley X shooting glasses.
The 'HearForever(TM): Best Practices in Hearing Conservation,' seminars will address an expanding range of need-to-know topics for employers ranging from implementing an effective occupational Hearing Conservation Program to impact of the changes to the Noise Reduction Rating (NRR) that the U.
A few of the SportEar's trademark features include hearing up to 50 percent better than standard muffs, 32dB noise reduction rating, ComfortFIT one-size-fits-all design, on-off switch with volume control, and CD quality sound.
Zip-Outs'[TM] unique ear plug delivery and retention system attaches Noise Reduction Rating (NRR/SNR)-rated ear plugs directly to all types of hard hats.
With high noise reduction rating (NRR) of 32 combined with Magid's economical prices, workers can enjoy quality protection at an affordable cost.
Remington's Youth Ear Muffs carry a noise reduction rating of 22 Decibels so Junior won't be saying "Huh.
Zip-Outs' unique ear plug delivery and retention system attaches Noise Reduction Rating (NRR)-rated ear plugs directly to all types of hard hats.
Other models are bulbous and, as we say in technical lingo, sort of "sticky-outy," and while they may offer a slightly higher Noise Reduction Rating, I find the Comtac just fine.
The HearForever initiative is especially timely given the proposed EPA rule change affecting the Noise Reduction Rating (NRR) for hearing protection products, testing and usage.
The passive component of the NoiseBuster ENC Earmuff has a Noise Reduction Rating (NRR) of 26dB (when worn over-the-head) and 25db (when worn behind-the-head) and the ENC component provides as much as 20dB of added noise reduction within the low-frequency bandwidth of 20-800 Hz.