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  2. Our tech writer's pick for best budget earbuds are 50% off ...

    www.aol.com/lifestyle/our-tech-writers-pick-for...

    Listen up: Our senior tech writer, Rick Broida, has spent the past two decades testing (and testing, and re-testing) hundreds of earbuds. So, when he's surprised by just how good a $40 pair ...

  3. 8 Headphones You Can Comfortably Wear to Sleep - AOL

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    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 ...

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

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    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 ...

  5. Polysomnography - Wikipedia

    en.wikipedia.org/wiki/Polysomnography

    Polysomnography (PSG) is a multi-parameter type of sleep study [1] and a diagnostic tool in sleep medicine.The test result is called a polysomnogram, also abbreviated PSG.The name is derived from Greek and Latin roots: the Greek πολύς (polus for "many, much", indicating many channels), the Latin somnus ("sleep"), and the Greek γράφειν (graphein, "to write").

  6. Delayed sleep phase disorder - Wikipedia

    en.wikipedia.org/wiki/Delayed_sleep_phase_disorder

    Delayed sleep phase disorder (DSPD), more often known as delayed sleep phase syndrome and also as delayed sleep–wake phase disorder, is the delaying of a person's circadian rhythm (biological clock) compared to those of societal norms. The disorder affects the timing of biological rhythms including sleep, peak period of alertness, core body ...

  7. 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 ...

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