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2. The best noise-cancelling earbuds in 2022 - AOL

   www.aol.com/best-noise-cancelling-earbuds-2022...

   We've listened to a lot of in-ear headphones to find out which models perform the best — here's our list of the top noise-cancelling earbuds you can buy right now. The best noise-cancelling ...

3. Record numbers of people are flying. So why are airlines ...

   www.aol.com/record-numbers-people-flying...

   Airlines can’t make a buck off of it. A record number of passengers are expected to pass through US airports this holiday travel week. You’d think this would be a great time to run an airline ...

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. 8 Great Headphones Made For Running - AOL

   www.aol.com/8-great-headphones-made-running...

   If you've been scarred by headphones slipping and sliding during a run, these Soundcore by Anker headphones will save the day. They're super lightweight and the over-ear hooks rotate up to 210 ...

6. 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 ...

7. Aircraft marshalling - Wikipedia

   en.wikipedia.org/wiki/Aircraft_marshalling

   Marshalling is one-on-one visual communication and a part of aircraft ground handling. It may be as an alternative to, or additional to, radio communications between the aircraft and air traffic control. The usual equipment of a marshaller is a reflective safety vest, a helmet with acoustic earmuffs, and gloves or marshalling wands – handheld ...