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  2. Noise-cancelling headphones - Wikipedia

    en.wikipedia.org/wiki/Noise-cancelling_headphones

    Noise -cancelling headphones alongside a carry case. Noise-cancelling headphones are headphones which suppress unwanted ambient sounds using active noise control. This is distinct from passive headphones which, if they reduce ambient sounds at all, use techniques such as soundproofing . Noise cancellation makes it possible to listen to audio ...

  3. Active noise control - Wikipedia

    en.wikipedia.org/wiki/Active_noise_control

    Noise control is an active or passive means of reducing sound emissions, often for personal comfort, environmental considerations, or legal compliance. Active noise control is sound reduction using a power source. Passive noise control is sound reduction by noise-isolating materials such as insulation, sound-absorbing tiles, or a muffler rather ...

  4. Noise-canceling microphone - Wikipedia

    en.wikipedia.org/wiki/Noise-canceling_microphone

    The internal electronic circuitry of an active noise-canceling mic attempts to subtract noise signal from the primary microphone. The circuit may employ passive or active noise canceling techniques to filter out the noise, producing an output signal that has a lower noise floor and a higher signal-to-noise ratio.

  5. Meet the engineer, doctors and other clock punchers ... - AOL

    www.aol.com/news/meet-engineer-doctors-other...

    Former college basketball star Canyon Barry isn't the only Olympian who has to balance 9-to-5 work with preparation for Paris. Meet the engineer, doctors and other clock punchers competing for ...

  6. Asda is scrapping its ‘physically exhausting’ 4-day ... - AOL

    www.aol.com/finance/asda-scrapping-physically...

    Staff needed to work 11-hour shifts to get their fifth fay off, leading to a host of productivity problems.

  7. Screen burn-in - Wikipedia

    en.wikipedia.org/wiki/Screen_burn-in

    Screen burn-in, image burn-in, ghost image, or shadow image, is a permanent discoloration of areas on an electronic visual display such as a cathode-ray tube (CRT) in an older computer monitor or television set. It is caused by cumulative non-uniform use of the screen. Newer liquid-crystal displays (LCDs) may suffer from a phenomenon called ...

  8. These Sony noise-cancelling earbuds have a 12,000 ... - AOL

    www.aol.com/lifestyle/sony-noise-cancelling...

    If you're looking for great buds that aren't fruit-themed, consider the Sony WF-1000XM4 noise-canceling earbuds, currently on sale at Amazon for $198 (from $279). There are also a lot of other ...

  9. 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 .