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  2. Noise-canceling microphone - Wikipedia

    en.wikipedia.org/wiki/Noise-canceling_microphone

    In a noisy environment, both microphones receive noise at a similar level, but the primary mic receives the desired sounds more strongly. Thus if one signal is subtracted from the other (in the simplest sense, by connecting the microphones out of phase) much of the noise is canceled while the desired sound is retained.

  3. Electrolarynx - Wikipedia

    en.wikipedia.org/wiki/Electrolarynx

    U+0418. An electrolarynx, sometimes referred to as a " throat back ", is a medical device about the size of a small electric razor used to produce clearer speech by those people who have lost their voice box, usually due to cancer of the larynx. The most common device is a handheld, battery-operated device pressed against the skin under the ...

  4. 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 ...

  5. The best wireless headphones for seniors - AOL

    www.aol.com/lifestyle/best-wireless-headphones...

    Quick Overview. More options. Sony WH-1000XM5 Noise-Cancelling Headphones. Best headphones overall. $259 at Groupon. Soundcore Q30 Hybrid Active Noise-Cancelling Headphones. Best budget headphones ...

  6. Best noise-canceling headphones, according to Consumer ... - AOL

    www.aol.com/news/best-noise-canceling-headphones...

    The Sennheiser PXC 550-II is one of the highest-scoring headphones in our ratings, with superb sound quality and noise canceling. The PXC 550-II is as much as $300 cheaper than many competitors.

  7. How noise cancelling headphones work - AOL

    www.aol.com/news/noise-cancelling-headphones...

    Shut out the world with the best noise cancelling headphones out there from Apple, Sony and Bose. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: ...

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