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2. 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 or ANC.A microphone captures the targeted ambient sounds, and a small amplifier generates sound waves that are exactly out of phase with the undesired sounds.

3. Bose launches QuietComfort II earbuds: What to know ... - AOL

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   The QuietComfort II headphones have two active noise cancellation modes: Aware Mode and Noise Cancellation Mode. Bose says that the Aware Mode is designed to let in the noise around you so you ...

4. List of Bose headphones - Wikipedia

   en.wikipedia.org/wiki/List_of_Bose_headphones

   The "A20 Aviation Headset" was released in 2010 as the successor to the "Aviation Headset X" (aka A10). [26] [27] It has a claimed battery life of 45 hours (using two AA batteries) or can be powered by the airplane's electrical system. There are two versions, one with Bluetooth and one without.

5. Active noise control - Wikipedia

   en.wikipedia.org/wiki/Active_noise_control

   In the 1950s Lawrence J. Fogel patented systems to cancel the noise in helicopter and airplane cockpits. In 1957 Willard Meeker developed a working model of active noise control applied to a circumaural earmuff. This headset had an active attenuation bandwidth of approximately 50–500 Hz, with a maximum attenuation of approximately 20 dB. [3]

6. These are the best Cyber Monday deals under $100: Walmart ...

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   Baseus Active Noise Cancelling Wireless Earbuds for $20 ($20 off) Amazon Fire HD 10 tablet for $75 ... Duluth Trading Leather Work Belt for $30 ... Top 10 best deals under $100. Crest.

7. Martin Scorsese Shares the Hilarious Reason Why He ... - AOL

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   The Oscar winner talked to PEOPLE ahead of the premiere of his new faith-based anthology series 'Martin Scorsese Presents: The Saints' The boy who’d grow up to direct The Last Temptation of ...