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2. Hearing protection device - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_device

   Various earmuff hearing protectors. Sound levels of some daily activities. 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.

3. Hearing protection fit-testing - Wikipedia

   en.wikipedia.org/wiki/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.

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. Hearing Aids With Earmolds Vs. Rubber Domes: What to Know

   www.aol.com/lifestyle/hearing-aids-earmolds-vs...

   Types of custom earmolds come in a variety of use and styles, ranging from custom musician’s earplugs, swim plugs, sleep plugs, or even in-ear monitors. The material used and specific features ...

6. Health effects from noise - Wikipedia

   en.wikipedia.org/wiki/Health_effects_from_noise

   There are many different types of HPDs available for use, including earmuffs, earplugs, electronic hearing protection devices, and semi-insert devices. [56] One can measure the personal attenuation rating through a hearing protection fit-testing system. Earmuff style hearing protection devices are designed to fit over the outer ear, or pinna.

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

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

   Esme Ear Muffs. Turn to Apparis for an eco-minded style. Crafted from a plant-based fur, you can rest assured that this is the most sustainable option. Materials: Modacrylic, metallic yarn.