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2. 8 Headphones You Can Comfortably Wear to Sleep - AOL

   www.aol.com/8-headphones-comfortably-wear-sleep...

   Ahead, eight versions of sleep headphones that are doing it best, depending on your sleep and ear needs. Download a 12-hour long brown noise playlist and call it a night. Sleep Headphones

3. Neurowear - Wikipedia

   en.wikipedia.org/wiki/Neurowear

   Neurowear is a gadget project organization in Japan founded on the concept of the "Augmented Human Body". The group's first project, known as Necomimi (from nekomimi (猫耳, "cat ear(s)")) is a headband with a brain wave sensor and motorized cat shaped ears programmed to turn up or down based on the wearer's electroencephalogram (electrical potentials recorded at the scalp) influenced by ...

4. These noise-canceling headphones are just as good as ... - AOL

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

   Plus, more than 4,000 shoppers have given them five stars.

5. Today only, these Anker noise-cancelling headphones are just ...

   www.aol.com/lifestyle/fans-noise-cancelling...

   They far surpass the noise-cancellation abilities of my AirPod Pros," said another customer. We have to say that these wireless headphones also look fantastic. They’re sleek, but not overly ...

6. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Noise -cancelling headphones alongside a carry case. Noise-cancelling headphones are headphones which suppress unwanted ambient sounds using active noise control. This is distinct from passive headphones which, if they reduce ambient sounds at all, use techniques such as soundproofing . Noise cancellation makes it possible to listen to audio ...

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.