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  2. Active noise control - Wikipedia

    en.wikipedia.org/wiki/Active_noise_control

    The wavelength in air of sinusoidal noise at approximately 800 Hz is double the distance of the average person's left ear to the right ear; [1] such a noise coming directly from the front will be easily reduced by an active system but coming from the side will tend to cancel at one ear while being reinforced at the other, making the noise ...

  3. 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 ...

  4. Category:Noise reduction - Wikipedia

    en.wikipedia.org/wiki/Category:Noise_reduction

    Pages in category "Noise reduction" The following 21 pages are in this category, out of 21 total. ... Noise-cancelling headphones; P. Power attenuator (guitar) S.

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

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  6. Noise cancelling technology - Wikipedia

    en.wikipedia.org/?title=Noise_cancelling...

    move to sidebar hide. From Wikipedia, the free encyclopedia

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    The Bell & Howell Rechargeable Scrubber Pro Deluxe, now on sale for $40, comes with nine brush heads for cleaning your shower, floorboards, windows, ceiling fans, tight corners, car and pretty ...

  8. Acoustic quieting - Wikipedia

    en.wikipedia.org/wiki/Acoustic_quieting

    This is strictly for electronic noise or noise which has been detected and put into electronic form. Noise canceling: If both the noise and the signal are received by an electronic or digital medium, noise can be filtered from the signal electronically and retransmitted without the noise. See noise-canceling microphone.

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