frequency modulation

noun Electronics, Radio.

Origin:
1920–25

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To frequency modulation
Collins
World English Dictionary
frequency modulation
 
n
Compare amplitude modulation FM 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

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
frequency modulation  
A method of transmitting signals, especially in radio broadcasting, in which the value of the signal is given by the frequency of a high frequency carrier wave. In FM radio transmission, for example, the signal to be carried is a sound wave, and its increasing and decreasing value is reflected in the increasing and decreasing frequency of a radio frequency carrier wave. Compare amplitude modulation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Cultural Dictionary
frequency modulation (FM)

A type of radio signal in which the frequency of the radio wave is varied to carry information from the transmitter to the receiver. (Compare amplitude modulation (AM).)

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
FOLDOC
Computing Dictionary

Frequency Modulation definition

communications
(FM) A method of encoding data by varying the frequency of a constant amplitude carrier signal.
Contrast Amplitude Modulation.
(2001-04-02)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
Cite This Source
Example sentences
FM is short for frequency modulation, which refers to the means of encoding the audio signal on the carrier frequency.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature