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2. Hearing protection device - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_device

   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. HPDs reduce the level of the noise entering the ear.

3. Hearing protection fit-testing - Wikipedia

   en.wikipedia.org/wiki/Hearing_protection_fit-testing

   Choosing the most appropriate hearing protection device, both with appropriate level of attenuation and appropriate fit for the individual. [5] Ideally, the device should limit the sound intensity that reaches the ear to levels below 85 dBA. If the attenuation does not limit the noise levels to that level, other alternatives should be sought.

4. Noise-induced hearing loss - Wikipedia

   en.wikipedia.org/wiki/Noise-induced_hearing_loss

   Ear protection, if used correctly, has the potential to reduce noise to safer levels, but does not necessarily prevent hearing loss. External solutions such as proper maintenance of equipment can lead to noise reduction, but further study of this issue under real-life conditions is needed.

5. Earmuffs - Wikipedia

   en.wikipedia.org/wiki/Earmuffs

   Exposure to high level noise (190 dB SPL) may cause the earmuff to vibrate off the external ear causing a leak which would allow hazardous exposure to dangerous levels of noise. [34] In loud enough environments, the ear canal can vibrate, causing the air trapped inside the earcup to vibrate as well.

6. Health effects from noise - Wikipedia

   en.wikipedia.org/wiki/Health_effects_from_noise

   A hearing protection device (HPD) is an ear protection device worn in or over the ears while exposed to hazardous noise to help prevent noise-induced hearing loss. HPDs reduce (not eliminate) the level of the noise entering the ear. HPDs can also protect against other effects of noise exposure such as tinnitus and hyperacusis.

7. Why do my ears feel clogged? 5 Things you can do right now. - AOL

   www.aol.com/why-ears-feel-clogged-5-000000206.html

   If you work in a noisy environment, wear appropriate hearing protection that properly fits your ears. If you have experienced noise-induced hearing loss, there is, unfortunately, no medical ...