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2. 8 white noise machines for better sleep - AOL

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

   Hatch Restore 2. The Hatch Restore 2 is a cross between a sunrise alarm clock and a sound machine that enables you to play consistent white noise. Sunrise alarm clocks gradually emit light to ...

3. 7 Types of Anti-Snoring Devices You Don’t Want To Snooze On

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   The nostrils, nasal passages, and tongue can contribute to this noise production. Dr. Lee-Chiong adds that the narrowing of the upper airways during sleep is a common cause behind new or worsened ...

4. Do anti-snoring devices actually work? - AOL

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   The best anti-snoring devices are Snore Rx mouthguards, Breathe Right nasal strips, Amazon wedge pillows and the Smart Nora. ... The pillow’s microfiber, machine-washable cover is treated with a ...

5. 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 ...

6. Noise reduction - Wikipedia

   en.wikipedia.org/wiki/Noise_reduction

   Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode rejection ratio .

7. Snoring - Wikipedia

   en.wikipedia.org/wiki/Snoring

   Snoring is the vibration of respiratory structures and the resulting sound due to obstructed air movement during breathing while sleeping. The sound may be soft or loud and unpleasant. Snoring during sleep may be a sign, or first alarm, of obstructive sleep apnea (OSA). Research suggests that snoring is one of the factors of sleep deprivation.