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TV DX and FM DX is the active search for distant radio or television stations received during unusual ... London 405-line BBC channel B1 TV service was introduced in ...
DXing, taken from DX, the telegraphic shorthand for "distance" or "distant", [1] is the hobby of receiving and identifying distant radio or television signals, or making two-way radio contact with distant stations in amateur radio, citizens band radio or other two-way radio communications.
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A prototype for five-channel surround sound, then dubbed "quintaphonic sound", was used in the 1975 film Tommy. [6]5.1 dates back to 1976, [7] when Dolby Labs modified the track usage of the six analogue magnetic soundtracks on Todd-AO 70 mm film prints.
[2] Channel 5 retunes the UK's video recorders to avoid interference with video recorders which use the same frequencies as those allocated to Channel 5. Engineering transmission tests are carried out at some sites. [8] Logo used from 30 March 1997 to 15 September 2002. 1997. 2 January – Test transmissions begin for Channel 5 in some areas.
Matrix decoding is an audio technology where a small number of discrete audio channels (e.g., 2) are decoded into a larger number of channels on play back (e.g., 5). The channels are generally, but not always, arranged for transmission or recording by an encoder, and decoded for playback by a decoder.
Twofour's headquarters in Plymouth. Twofour Broadcast Limited, [1] trading as Twofour, is a British television and digital media group founded in 1989 by Charles Wace, a former BBC news producer, and Christopher Slade, a BBC presenter.
SQ is compatible with two-channel stereo, but there are some problems. The front channels are totally compatible, the rear channels have a smaller width. But the great problems are the sounds between front and rear. They will turn to the left and the middle point of the room goes only to the left speaker in 2-channel stereo.