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  2. Hearing protection device - Wikipedia

    en.wikipedia.org/wiki/Hearing_protection_device

    Earmuff style hearing protection devices are designed to fit over the outer ear, or pinna. Earmuff HPDs typically consist of two ear cups and a head band. Ear cups are usually lined with a sound-absorbing material, such as foam. The cups should be fit so that the center of the ear canal aligns with the ear canal opening. [1]

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

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

    Esme Ear Muffs. apparis.com. $100.00. Earmuffs. For a simple and straightforward pair, Gorski makes solid black earmuffs that go with just about everything. From the gym to dinner, these will be ...

  4. Earmuffs - Wikipedia

    en.wikipedia.org/wiki/Earmuffs

    Two people wearing behind-the-neck earmuffs. Thermal earmuffs are worn for protection from the cold. Because the ears extend from the sides of the head to gather sound waves, they have a high skin surface-area-to-volume ratio, and very little muscle tissue, causing them to be one of the first body parts to become uncomfortably cold as temperatures drop.

  5. 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 ...

  6. Ear protection - Wikipedia

    en.wikipedia.org/wiki/Ear_protection

    Ear protection may pertain to protecting the ear from cold, intrusion by water or debris, or noise. It may refer to: It may refer to: Hearing protection device

  7. Chester Greenwood - Wikipedia

    en.wikipedia.org/wiki/Chester_Greenwood

    Chester Greenwood (December 4, 1858 – July 5, 1937) was an American engineer and inventor, known for inventing the earmuffs in 1873. [1] He reportedly came up with the idea while ice skating and he asked his grandmother to sew tufts of fur between loops of wire. [2] His patent was for improved ear protectors. He manufactured these ear ...

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