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

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

   Sleep PROxs. Bonamour's sleep buds are upping the ante when it comes to incorporating the latest in sleep science. These teeny tiny buds connect to the Bonamour app, which has a library of ...

3. A sleep psychologist recommends the 3-2-1 rule to help you ...

   www.aol.com/news/3-2-1-rule-expert-020757765.html

   The 3-2-1 rule. There are three things you should cut out before bed in order to achieve a better night’s sleep. Breus broke down what they are and when to quit them with these simple guidelines ...

4. All the best earbuds for every style and situation - AOL

   www.aol.com/10-best-earbuds-every-situation...

   Finding a good pair of buds is seriously tricky. If you're anything like us, you’ve probably gone through many pairs of earbuds over the years. More than we can count, in fact.

5. Delayed auditory feedback - Wikipedia

   en.wikipedia.org/wiki/Delayed_Auditory_Feedback

   Delayed auditory feedback. Delayed Auditory Feedback (DAF), also called delayed sidetone, is a type of altered auditory feedback that consists of extending the time between speech and auditory perception. [1] It can consist of a device that enables a user to speak into a microphone and then hear their voice in headphones a fraction of a second ...

6. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Noise-cancelling headphones are headphones that suppress unwanted ambient sounds using active noise control (ANC). Active noise cancellation makes it possible to listen to audio content without raising the volume excessively. In an aviation environment, noise-cancelling headphones increase the signal-to-noise ratio significantly more than ...

7. Sleep cycle - Wikipedia

   en.wikipedia.org/wiki/Sleep_cycle

   The sleep cycle is an oscillation between the slow-wave and REM (paradoxical) phases of sleep. It is sometimes called the ultradian sleep cycle, sleep–dream cycle, or REM-NREM cycle, to distinguish it from the circadian alternation between sleep and wakefulness. In humans, this cycle takes 70 to 110 minutes (90 ± 20 minutes). [1]