The usage of electronic communications increases by the day. In the past, most electronic communication systems transmitted analogue signals. On an analogue telephone system the voltage level from the phone varies with the voice signal. Unwanted signals from external sources easily corrupt these signals. In a digital communication system a series of digital codes represents the analogue signal. These are then transmitted as 1’s and 0’s. Digital information is less likely to be affected by noise and has thus become the most predominent form of communications.
KeywordsAmplitude Modulation Impulse Noise Radio Station Signal Bandwidth Carrier Wave
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