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2. White noise machine - Wikipedia

   en.wikipedia.org/wiki/White_noise_machine

   A LectroFan white noise machine A clock radio that includes a 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 ...

3. White, brown and pink noise machines are going viral for ...

   www.aol.com/news/white-brown-pink-noise-machines...

   In a 2021 review of 38 studies on the relationship between white noise and sleep, researchers concluded that the quality of the evidence to support white noise as a sleep aid was poor and more ...

4. Sound masking - Wikipedia

   en.wikipedia.org/wiki/Sound_masking

   Sound masking is the inclusion of generated sound (commonly, though inaccurately, referred to as "white noise" or "pink noise") into an environment to mask unwanted sound. It relies on auditory masking. Sound masking is not a form of active noise control (noise cancellation technique); however, it can reduce or eliminate the perception of sound ...

5. Health effects from noise - Wikipedia

   en.wikipedia.org/wiki/Health_effects_from_noise

   Annoyance effects of noise are minimally affected by demographics, but fear of the noise source and sensitivity to noise both strongly affect the 'annoyance' of a noise. [42] Sound levels as low as 40 dB(A) can generate noise complaints [ 43 ] and the lower threshold for noise producing sleep disturbance is 45 dB(A) or lower.

6. 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 ...

7. Drown Out the Noise and Sleep Soundly With These Sound Machines

   www.aol.com/drown-noise-sleep-soundly-sound...

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