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2. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Learn how noise-cancelling headphones use active noise control (ANC) to suppress unwanted ambient sounds and improve audio quality. Find out the theory, applications, benefits, drawbacks and history of ANC technology.

3. Active noise control - Wikipedia

   en.wikipedia.org/wiki/Active_noise_control

   Active noise control (ANC) is a method for reducing unwanted sound by adding a second sound with the opposite phase. Learn about the history, applications, and principles of ANC, also known as noise cancellation or noise reduction.

4. List of Bose headphones - Wikipedia

   en.wikipedia.org/wiki/List_of_Bose_headphones

   Learn about the history, features and models of Bose headphones, from over-ear to in-ear, wireless to noise cancelling. Compare the specifications, reviews and awards of different Bose products.

5. Category:Noise reduction - Wikipedia

   en.wikipedia.org/wiki/Category:Noise_reduction

   Pages in category "Noise reduction" The following 21 pages are in this category, out of 21 total. ... Noise-cancelling headphones; P. Power attenuator (guitar) S.

6. Noise-canceling microphone - Wikipedia

   en.wikipedia.org/wiki/Noise-canceling_microphone

   The internal electronic circuitry of an active noise-canceling mic attempts to subtract noise signal from the primary microphone. The circuit may employ passive or active noise canceling techniques to filter out the noise, producing an output signal that has a lower noise floor and a higher signal-to-noise ratio .

7. Adaptive feedback cancellation - Wikipedia

   en.wikipedia.org/wiki/Adaptive_feedback_cancellation

   Adaptive feedback cancellation originated during the evolution of the hearing aid. The hearing aid became digital, and as such feedback cancellation was needed. In 1980 a directional microphone was introduced in the digital hearing aid, and adaptive feedback cancellation was created to block external noise that the microphone picked up. Today ...