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  2. Are Noise-Canceling Headphones Harmful to Your Ears? - AOL

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

    Key Takeaways: As the FDA does not regulate headphone volume, it’s up to us to self-regulate our listening volume. Noise canceling headphones can help keep your volume within a safe range, so ...

  3. Auditory processing disorder - Wikipedia

    en.wikipedia.org/wiki/Auditory_processing_disorder

    Auditory processing disorder (APD), rarely known as King-Kopetzky syndrome or auditory disability with normal hearing (ADN), is a neurodevelopmental disorder affecting the way the brain processes sounds. [2] Individuals with APD usually have normal structure and function of the ear, but cannot process the information they hear in the same way ...

  4. 6-year-old excitedly tells people he's getting a new heart

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    When 6-year-old John-Henry learned he would be getting a new heart, he couldn't resist telling all of his friends at Cleveland Clinic Children's.. The Ohio hospital posted footage of the boy, who ...

  5. Take 20% Off Raycon Earbuds, Headphones and Speakers ... - AOL

    www.aol.com/entertainment/20-off-raycon-earbuds...

    These Basic Earbuds. The Work Earbuds Classic. Raycon. For everyday wear that’s easy to take in and out, these buds are the perfect pick! See it! Get The Work Earbuds Classic (originally $120 ...

  6. Hearing range - Wikipedia

    en.wikipedia.org/wiki/Hearing_range

    The commonly stated range of human hearing is 20 to 20,000 Hz. [6][7][note 1] Under ideal laboratory conditions, humans can hear sound as low as 12 Hz [8] and as high as 28 kHz, though the threshold increases sharply at 15 kHz in adults, corresponding to the last auditory channel of the cochlea. [9] The human auditory system is most sensitive ...

  7. 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. HPDs can also protect against other effects ...

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