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2. Noise-canceling microphone - Wikipedia

   en.wikipedia.org/wiki/Noise-canceling_microphone

   A second mic receives ambient noise. 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 ...

3. Active noise control - Wikipedia

   en.wikipedia.org/wiki/Active_noise_control

   Active noise control ( ANC ), also known as noise cancellation ( NC ), or active noise reduction ( ANR ), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first. The concept was first developed in the late 1930s; later developmental work that began in the 1950s eventually resulted in ...

4. List of Bose headphones - Wikipedia

   en.wikipedia.org/wiki/List_of_Bose_headphones

   QuietComfort 20. The "QuietComfort 20" (QC20) and QC20i in-ear headphones were released in 2015 and are the company's first in-ear noise cancelling headphones. [ 19] It received a 2014 Red Dot Design Award. [ 20] Also, it received a CNET 's Editors' Choice Award of 4.5/5 points for its active noise-cancelling.

5. 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 ...

6. What 'secret' loudspeaker codes mean at department stores - AOL

   www.aol.com/news/2010-10-13-what-secret...

   Walmart security watches shoppers enter on Black Friday. If you've been shopping in a big box retail store you've probably heard an announcement on the loudspeaker such as, "code yellow toys, code ...

7. The Prime Day fashion deals our editors are adding to their ...

   www.aol.com/lifestyle/what-early-prime-day...

   AOL-reader favorites like the Hanes Jersey Pocket Shorts are down to just $11 right now, while ever-popular Gloria Vanderbilt jeans — which flatter just about every figure — are a rock-bottom $17.

8. The best Walmart deals under $100 to shop right now ... - AOL

   www.aol.com/lifestyle/best-walmart-deals-under...

   Travelhouse Hardside Luggage Set, 3-Pieces. $120 $350 Save $230. If your current bags have seen better travel days, it's time to level up with a truly incredible deal. The bestselling Travelhouse ...

9. Roblox - Wikipedia

   en.wikipedia.org/wiki/Roblox

   Roblox occasionally hosts real-life and virtual events. They have in the past hosted events such as BloxCon, which was a convention for ordinary players on the platform. [36] Roblox operates annual Easter egg hunts [43] and also hosts an annual event called the "Bloxy Awards", an awards ceremony that also functions as a fundraiser. The 2020 ...