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n. Abbr. FM
The encoding of a carrier wave by variation of its frequency in accordance with an input signal.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Telecommunications) a method of transmitting information using a radio-frequency carrier wave. The frequency of the carrier wave is varied in accordance with the amplitude and polarity of the input signal, the amplitude of the carrier remaining unchanged. Abbreviation: FM Compare amplitude modulation
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
1. frequency modulation: a method of impressing a signal on a radio carrier wave by varying the frequency of the carrier wave.
2. a system of radio broadcasting by means of frequency modulation.Compare AM.
Chem. Symbol. fermium.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
A method of radio broadcasting in which the frequency of the wave that carries the sound signal changes to reflect the various sounds that are to be reproduced, while the amplitude of the wave remains the same. Frequency modulation reduces static in radio transmission. Compare amplitude modulation.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||frequency modulation - modulation of the frequency of the (radio) carrier wave|
modulation - (electronics) the transmission of a signal by using it to vary a carrier wave; changing the carrier's amplitude or frequency or phase
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