frequency modulation
The Oxford Pocket Dictionary of Current English
fre·quen·cy mod·u·la·tion
(abbr.: FM)
•
n.
the modulation of a radio or other wave by variation of its frequency, esp. to carry an audio signal. Often contrasted with amplitude modulation.
∎
the system of radio transmission using such modulation.
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© The Oxford Pocket Dictionary of Current English 2008, originally published by Oxford University Press 2008.
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