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amplitude modulation

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amplitude modulation

 
Use amplitude modulation in a Sentence
–noun Electronics, Radio.
AM.
Origin:
1920–25
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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amplitude modulation  
n.   Abbr. AM

  1. The encoding of a carrier wave by variation of its amplitude in accordance with an input signal.

  2. A broadcast system that uses amplitude modulation.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Science Dictionary
amplitude modulation  
A method of transmitting signals, such as sound or digital information, in which the value of the signal is given by the amplitude of a high frequency carrier wave. In AM 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 amplitude of the radio frequency carrier wave. In fiber optics, the carrier wave is a beam of light. Compare frequency modulation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

Amplitude Modulation communications
(AM) A method of encoding data by varying the amplitude of a constant frequency carrier.
Contrast Frequency Modulation.
(2001-04-30)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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