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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. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Noise -cancelling headphones alongside a carry case. Noise-cancelling headphones are headphones which suppress unwanted ambient sounds using active noise control. This is distinct from passive headphones which, if they reduce ambient sounds at all, use techniques such as soundproofing . Noise cancellation makes it possible to listen to audio ...

4. 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.

5. Hyundai's upgraded Active Noise Control tech to debut on ...

   www.autoblog.com/2019/11/11/hyundai-genesis...

   The concept of active noise control or cancelation is nothing new. In the quest to reach the seemingly impossible goal of a perfectly quiet automobile cabin, Toyota, BMW, Lotus and many others ...

6. Bose noise cancelling now available for cars without Bose ...

   www.autoblog.com/2013/12/22/bose-noise...

   Bose® Active Sound Management Software for Noise Cancellation in Cars Now Available on Chip from NXP Semiconductors FRAMINGHAM, Mass., December 17, 2013 --(BUSINESS WIRE)--Today, Bose announced ...

7. Lotus and Harman partner on noise-cancelling, noise-creating ...

   www.autoblog.com/2009/04/16/lotus-and-harman...

   The agreement includes all of Lotus' Active Noise Control technologies comprising Road Noise Cancellation, Engine Order Cancellation, and Electronic Sound Synthesis.