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2. Earmuffs - Wikipedia

   en.wikipedia.org/wiki/Earmuffs

   Materials, such as a cupped foam coated in hard plastic, will block sound due to the thick and dampening properties of the foam. Active earmuffs have an electronic component and microphones that allow the user to control their access to communication while attenuating background noise. When in loud, hazardous settings, the wearer may still be ...

3. Hearing protection device - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_device

   A hearing protection device, also known as a HPD, is an ear protection device worn in or over the ears while exposed to hazardous noise and provide hearing protection to help prevent noise-induced hearing loss. HPDs reduce the level of the noise entering the ear. HPDs can also protect against other effects of noise exposure such as tinnitus and ...

4. Earplug - Wikipedia

   en.wikipedia.org/wiki/Earplug

   Using both ear muffs (whether passive or active) and earplugs simultaneously results in maximum protection, but the efficacy of such combined protection relative to preventing permanent ear damage is inconclusive, with evidence indicating that a combined noise reduction ratio (NRR) of only 36 dB (C-weighted) is the maximum possible using ear ...

5. The 13 Best Earmuffs to Up Your Winter Accessory Game - AOL

   www.aol.com/lifestyle/13-best-earmuffs-winter...

   Faux Beaver Fur Earmuffs. This pair of earmuffs is a great option for easing into the trend. Take your pick from four faux furry hues, and channel peak winter warmth. Materials: Acrylic, polyester ...

6. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Fogel is considered to be the inventor of active noise cancellation, and he designed one of the first noise-cancelling headphones systems. Later on, Willard Meeker designed an active noise control model that was applied to circumaural earmuffs for advanced hearing protection. Noise-cancelling aviation headsets are now commonly available. [5] [6]

7. 8 of the best noise-canceling headphones for blocking out the ...

   www.aol.com/news/9-best-noise-cancelling...

   BEST NOISE-CANCELING HEADPHONES DEALS THIS WEEK: * Cowin E7 Active Noise Cancelling Headphones -- $49.99 (save $10) * Bose QuietComfort 25 -- $147.18 (save $197.82) * Skullcandy Venue Active Noise ...

8. Noise-induced hearing loss - Wikipedia

   en.wikipedia.org/wiki/Noise-induced_hearing_loss

   Personal noise reduction devices can be passive, active or a combination. Passive ear protection includes earplugs or earmuffs which can block noise up to a specific frequency. Earplugs and earmuffs can provide the wearer with 10 dB to 40 dB of attenuation. [99]

9. Hearing protection fit-testing - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_fit-testing

   Hearing protection fit-testing. Hearing protector fit-testing is a method that measures the degree of noise reduction obtained from an individual wearing a particular hearing protection device (HPD) - for example, a noise canceling earplug or earmuff. Fit testing is necessary due to the fact that noise attenuation varies across individuals.