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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. Electromagnetic interference - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_interference

   Electromagnetic interference ( EMI ), also called radio-frequency interference ( RFI) when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction. [1] The disturbance may degrade the performance of the circuit or ...

4. 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 ...

5. Adaptive noise cancelling - Wikipedia

   en.wikipedia.org/wiki/Adaptive_noise_cancelling

   Adaptive noise cancelling. Adaptive noise cancelling is a signal processing technique that is highly effective in suppressing additive interference or noise corrupting a received target signal at the main or primary sensor in certain common situations where the interference is known and is accessible but unavoidable and where the target signal ...

6. Wireless device radiation and health - Wikipedia

   en.wikipedia.org/wiki/Wireless_device_radiation...

   Since at least the 1990s, scientists have researched whether the now-ubiquitous radiation associated with mobile phone antennas or cell phone towers is affecting human health. [1] Mobile phone networks use various bands of RF radiation, some of which overlap with the microwave range. Other digital wireless systems, such as data communication ...

7. Radio network - Wikipedia

   en.wikipedia.org/wiki/Radio_network

   The broadcast type of radio network is a network system which distributes programming to multiple stations simultaneously, or slightly delayed, for the purpose of extending total coverage beyond the limits of a single broadcast signal. The resulting expanded audience for radio programming or information essentially applies the benefits of mass ...

8. Racetrack Television Network - Wikipedia

   en.wikipedia.org/wiki/Racetrack_television_network

   Racetrack Television Network (RTN) is a multi-channel television network dedicated to providing live simulcasting of Thoroughbred, harness, American Quarter Horse, and greyhound racing throughout the world, along with jai alai, using multiple broadcast feeds. RTN's full schedule is available on Dish Network [ 1] in the channel 9701–9780 range ...

9. Category:Television networks in the United States - Wikipedia

   en.wikipedia.org/wiki/Category:Television...

   Cable network groups in the United States ‎ (9 C, 31 P) Cartoon Network ‎ (15 C, 59 P) CBS ‎ (7 C, 38 P) CNN ‎ (4 C, 53 P) Comedy Central ‎ (6 C, 30 P) Commercial-free television networks in the United States ‎ (1 C, 10 P) The CW ‎ (6 C, 18 P)