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  2. Sonic weapon - Wikipedia

    en.wikipedia.org/wiki/Sonic_weapon

    Noise-induced neurologic disturbances in scuba divers exposed to continuous low-frequency tones for durations longer than 15 minutes has involved in some cases the development of immediate and long-term problems affecting brain tissue. The symptoms resembled those of individuals who had suffered minor head injuries.

  3. White noise - Wikipedia

    en.wikipedia.org/wiki/White_noise

    White noise draws its name from white light, [2] although light that appears white generally does not have a flat power spectral density over the visible band. An image of salt-and-pepper noise In discrete time , white noise is a discrete signal whose samples are regarded as a sequence of serially uncorrelated random variables with zero mean ...

  4. 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 ...

  5. iPhones Have A Built-In White Noise Feature That No One ... - AOL

    www.aol.com/iphones-built-white-noise-feature...

    There's no need to buy a white noise machine if you have a recent iPhone. Maskot via Getty Images. While many folks shop online to find a white noise machine, which can range from $20 to more than ...

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

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

    Brown noise, also called red noise, is more intense at lower frequencies, which produces a deep, rumbling sound, says Harris — think more bass and less static than white noise.

  8. White Noise (2005 film) - Wikipedia

    en.wikipedia.org/wiki/White_Noise_(2005_film)

    White Noise is a 2005 supernatural horror film directed by Geoffrey Sax and starring Michael Keaton and Deborah Kara Unger.The title refers to electronic voice phenomena (EVP), where anomalous voice-like sounds, which some believe to be from the "other side" — interpreted as spirit voices, are found on electronic audio recordings.

  9. Canon V-20 - Wikipedia

    en.wikipedia.org/wiki/Canon_V-20

    The Canon V-20 was a MSX microcomputer made by the Japanese corporation ... General Instrument AY-3-8910 (PSG), 3 voices, white noise: Ports: 2 joystick connectors ...

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