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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 ...
A broadcast signal intrusion is the hijacking of broadcast signals of radio, television stations, cable television broadcast feeds or satellite signals without permission or licence. Hijacking incidents have involved local TV and radio stations as well as cable and national networks. Although television, cable, and satellite broadcast signal ...
A breakdown is impossible due to a) the number of platforms, b) duplication of services, c) regional services, d) part time operations, and e) audio. For the Sky platform alone, there were 485 TV stations, additionally 57 "timeshifted versions", 36 HDTV versions, 42 regional TV options, 81 audio channels, and 5 promotion channels as of mid-2010 ...
The television licence is the instrument used to raise revenue to fund the BBC and S4C . Businesses, hospitals, schools and a range of other organisations are also required by law to hold television licences to watch and record live TV broadcasts. [1] The licence, originally a radio licence, was introduced in November 1923 using powers under ...
BBC Radio 5 Live: News, current affairs, discussion and sport. Yes BBC Radio 5 Sports Extra: Additional sports coverage. No Yes BBC Radio 6 Music: Alternative music, rock, reggae and other minor genres. BBC Asian Network: Station for the British Asian community. In some areas BBC World Service: International radio station for current affairs. No
UHF television broadcasting is the use of ultra high frequency (UHF) radio for over-the-air transmission of television signals. UHF frequencies are used for both analog and digital television broadcasts. UHF channels are typically given higher channel numbers, like the US arrangement with VHF channels (initially) 1 to 13, and UHF channels ...
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 ...
Media cross-ownership is the common ownership of multiple media sources by a single person or corporate entity. [1] Media sources include radio, broadcast television, specialty and pay television, cable, satellite, Internet Protocol television (IPTV), newspapers, magazines and periodicals, music, film, book publishing, video games, search engines, social media, internet service providers, and ...
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