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2. 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 ...

3. How Active Noise Canceling (ANC) Headphones Work - AOL

   www.aol.com/active-noise-canceling-anc...

   Headphones combine both passive and active noise cancellation to reduce background noise and lower the volume of the world around you. This technology works best on steady-state low frequency ...

4. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Noise-cancelling headphones are headphones that suppress unwanted ambient sounds using active noise control (ANC). Active noise cancellation makes it possible to listen to audio content without raising the volume excessively. In an aviation environment, noise-cancelling headphones increase the signal-to-noise ratio significantly more than ...

5. Apple AirPods 4 review: Still the top choice for a reason

   www.aol.com/finance/apple-airpods-4-review-still...

   An updated version of Apple’s entry-level and mid-range AirPods, the AirPods 4 come in two flavors: a $129 base model and a $179 version with active noise cancellation. We’ll refer to those as ...

6. List of Bose headphones - Wikipedia

   en.wikipedia.org/wiki/List_of_Bose_headphones

   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. [21]

7. Active noise cancellation - Wikipedia

   en.wikipedia.org/?title=Active_noise...

   This page was last edited on 23 February 2005, at 23:41 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply.