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  2. 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 ...

  3. 8 white noise machines for better sleep - AOL

    www.aol.com/news/8-white-noise-machines-better...

    This simple white noise machine offers ten fan sounds and ten ambient noise variations (including white, pink and brown noise). It is powered by either AC or USB and you can adjust the volume with ...

  4. List of Bose headphones - Wikipedia

    en.wikipedia.org/wiki/List_of_Bose_headphones

    QuietComfort 20. The "QuietComfort 20" (QC20) and QC20i in-ear headphones were released in 2015 and are the company's first in-ear noise cancelling headphones. [ 19] It received a 2014 Red Dot Design Award. [ 20] Also, it received a CNET 's Editors' Choice Award of 4.5/5 points for its active noise-cancelling.

  5. White noise machine - Wikipedia

    en.wikipedia.org/wiki/White_noise_machine

    A white noise machine is a device that produces a noise that calms the listener [citation needed], which in many cases sounds like a rushing waterfall or wind blowing through trees, and other serene or nature-like sounds. Often such devices do not produce actual white noise, which has a harsh sound, but pink noise, whose power rolls off at ...

  6. How to sleep on a plane: Doctors and travel experts share ...

    www.aol.com/lifestyle/sleep-plane-doctors-travel...

    Here are her tried-and-true tips after 25 years as a professional traveler: Avoid caffeine: Brown recommends turning down the in-flight coffee service so that the caffeine doesn't keep you up ...

  7. Active noise control - Wikipedia

    en.wikipedia.org/wiki/Active_noise_control

    Active noise control ( ANC ), also known as noise cancellation ( NC ), or active noise reduction ( ANR ), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first. The concept was first developed in the late 1930s; later developmental work that began in the 1950s eventually resulted in ...

  8. Music and sleep - Wikipedia

    en.wikipedia.org/wiki/Music_and_sleep

    Persistent sleeping disturbances can lead to fatigue, irritability, and various health issues. Numerous studies have examined the positive impact of music on sleep quality. As early as 2000 B.C., lullabies were designed to aid infant sleep. For adults with sleep-related disorders, music serves as a useful intervention in reducing stress.

  9. Some of These Amazon Best-Sellers Are on Sale - AOL

    www.aol.com/50-best-selling-amazon-products...

    The video quality is decent, providing clear images during the day, and the infrared night vision ensures visibility in low-light conditions,” one reviewer noted. ... Noise Cancelling Headphones ...