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Network packet
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=== NICAM === In order to provide [[Monaural|mono]] ''compatibility'', the [[NICAM]] signal is transmitted on a [[subcarrier]] alongside the sound carrier. This means that the [[Frequency modulation|FM]] or [[Amplitude modulation|AM]] regular mono sound carrier is left alone for reception by monaural receivers. The NICAM packet (except for the header) is scrambled with a nine-bit pseudo-random bit-generator before transmission. Making the NICAM bitstream look more like [[white noise]] is important because this reduces signal patterning on adjacent TV channels.
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