Amplitude modulation

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Amplitude modulation (AM) is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. AM works by varying the strength of the transmitted signal in relation to the information being sent. For example, changes in the signal strength can be used to reflect the sounds to be reproduced by a speaker





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*This article is licensed under the Free Documentation License. It uses material from the Wikipedia article http://en.wikipedia.org/wiki/Amplitude_modulation