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2. List of Bose headphones - Wikipedia

   en.wikipedia.org/wiki/List_of_Bose_headphones

   Development of the company's noise cancelling headphones (and first over-ear headphones) began in 1978 when the chairman, Amar Bose, tried a set of airline-supplied headphones during a flight and found that engine noise from the aircraft prevented the music from being enjoyed. [2]

3. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Simplified graphical depiction of active noise reduction. To cancel the lower-frequency portions of the noise, noise-cancelling headphones use active noise control.A microphone captures the targeted ambient sounds, and a small amplifier generates sound waves that are exactly out of phase with the undesired sounds.

4. 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 ...

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

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

   Sony WF-1000XM4 $278.00 at Walmart. Sony WF-1000XM4 $279.99 at Best Buy. Sony WF-1000XM4 $278.00 at Abt. Over-Ear, Bluetooth, and Budget-Friendly Anker SoundCore Life Q20

6. How noise cancelling headphones work - AOL

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

   Bose Noise Cancelling Wireless Bluetooth Headphones 700, with Alexa Voice Control is on of the best active noise cancelling headphones in 2021. (Amazon / Amazon) Bose Noise Cancelling Wireless ...

7. List of aviation headset connectors - Wikipedia

   en.wikipedia.org/wiki/List_of_aviation_headset...

   XLR 5, used internally on Airbus aircraft [9] [1] REDEL 6-pin connector by LEMO, known as "LEMO plugs". [10] [1] Most Cirrus aircraft use this connector. [9] Fischer 8-pin connector, used in Agusta helicopters [5] Neutrik neutriCON 8-pin connector [11] [12] [13] The XLR, LEMO and Fischer plugs are able to supply power for active noise ...