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2. Best noise-canceling headphones, according to Consumer Reports

   www.aol.com/best-noise-canceling-headphones...

   Consumer Reports doesn’t test battery life in headphones, but Sennheiser says this model will run for up to 20 hours with Bluetooth and noise canceling turned on. It can be used over Bluetooth ...

3. Now hear this: These waterproof earbuds are 50% for ... - AOL

   www.aol.com/lifestyle/now-hear-waterproof...

   Best Prime Day headphones and earbuds deals: Philips H6506 On-Ear Wireless Headphones, $50 (was $100), amazon.com Bose SoundSport Wireless In-Ear Headphones, $99 (was $149), amazon.com

4. 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 ...

5. Noise-induced hearing loss - Wikipedia

   en.wikipedia.org/wiki/Noise-induced_hearing_loss

   Otorhinolaryngology, audiology. Noise-induced hearing loss ( NIHL) is a hearing impairment resulting from exposure to loud sound. People may have a loss of perception of a narrow range of frequencies or impaired perception of sound including sensitivity to sound or ringing in the ears. [1] When exposure to hazards such as noise occur at work ...

6. 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.

7. Earplug - Wikipedia

   en.wikipedia.org/wiki/Earplug

   Earplug. An earplug is a device that is inserted in the ear canal to protect the user's ears from loud noises, intrusion of water, foreign bodies, dust or excessive wind. Since they reduce the sound volume, earplugs may prevent hearing loss and tinnitus (ringing of the ears), in some cases.