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2. These 6 Comfy Earbuds Won't Have Your Ears Begging for ... - AOL

   www.aol.com/6-comfy-earbuds-wont-ears-181100568.html

   Dime 3 In-Ear Wireless Earbuds. Earbuds are worth investing in, but sometimes, a backup pair is the best way to protect that investment. Keeping a budget-friendly pair of earbuds around allows you ...

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

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

   The good news is that noise-canceling headphones can benefit your ears in certain situations. A few of those situations could be blocking out background noise in a busy coffee shop, blaring ...

4. I Have Teeny Little Ears and These Earbuds *Actually* Stay Put

   www.aol.com/lifestyle/teeny-little-ears-earbuds...

   Invisible Earbuds. Invisible is the perfect name for these teeny earbuds. They're barely noticeable unless you're aware that they're there. They slip into the ear and stay there. As a low-budget ...

5. 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 ...

6. Bone conduction - Wikipedia

   en.wikipedia.org/wiki/Bone_conduction

   Bone conduction. Bone conduction is the conduction of sound to the inner ear primarily through the bones of the skull, allowing the hearer to perceive audio content even if the ear canal is blocked. Bone conduction transmission occurs constantly as sound waves vibrate bone, specifically the bones in the skull, although it is hard for the ...

7. Head-related transfer function - Wikipedia

   en.wikipedia.org/wiki/Head-related_transfer_function

   HRTF filtering effect. A head-related transfer function (HRTF) is a response that characterizes how an ear receives a sound from a point in space. As sound strikes the listener, the size and shape of the head, ears, ear canal, density of the head, size and shape of nasal and oral cavities, all transform the sound and affect how it is perceived, boosting some frequencies and attenuating others.