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Computing (FOLDOC) dictionary (also found in English - English (Wordnet), English - Vietnamese)
demodulation
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communications To recover the signal from the carrier.
For example, in a radio broadcast using amplitude modulation
the audio signal is transmitted as the mean amplitude of a
radio-frequency carrier so demodulation requires a circuit
which measures the amplitude and filters out the carrier.
There are many other kinds of modulation and corresponding
demodulation.