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

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

   According to Anker, the headphones have a generous 40-hour battery life when Bluetooth and noise canceling are both turned on. Anker SoundCore Life Q20 Portability for Bargain Hunters

3. Today only, these Anker noise-cancelling headphones are just ...

   www.aol.com/lifestyle/fans-noise-cancelling...

   "The battery life is top of class. 40 hours is not an exaggeration, slightly less with noise cancelling turned on. Not surprising since the headphones come from Soundcore, an Anker brand, known ...

4. Anker makes wireless noise cancelling headphones and ... - AOL

   www.aol.com/news/anker-makes-wireless-noise...

   The Anker Soundcore Life 2 Active Noise Cancelling Over-Ear Wireless Headphones launched at $80 and were an impressive value at that price, but today they're on sale for just $49.99.

5. Anker Innovations - Wikipedia

   en.wikipedia.org/wiki/Anker_Innovations

   Anker makes power banks, charging cables, wall adapters, power strips, USB hubs, and torches under the Bolder sub-brand. Soundcore makes Bluetooth earbuds, headphones, and speakers. Eufy produces smart home appliances and security devices. Nebula makes portable video projectors. Roav makes car accessories. Zolo was a precursor to the Soundcore ...

6. 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.

7. Headphones - Wikipedia

   en.wikipedia.org/wiki/Headphones

   Active noise-cancelling headphones use a microphone, amplifier, and speaker to pick up, amplify, and play ambient noise in phase-reversed form; this to some extent cancels out unwanted noise from the environment without affecting the desired sound source, which is not picked up and reversed by the microphone. They require a power source ...