amplitude modulation


Definition of amplitude modulation

: modulation of the amplitude of a radio carrier wave in accordance with the strength of the audio or other signal also : a broadcasting system using such modulation — compare frequency modulation

Examples of amplitude modulation in a Sentence

Recent Examples on the Web Early experiments with radio communication developed amplitude modulation around 1900. Kiona N. Smith, Forbes, 31 May 2021 The current electric motors generate radio frequency interference (RFI) in the same wavelengths as amplitude modulation (AM) signals, creating static. Motormouth Bob Weber, Star Tribune, 21 May 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'amplitude modulation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of amplitude modulation

1921, in the meaning defined above

Keep scrolling for more

Learn More About amplitude modulation

Time Traveler for amplitude modulation

Time Traveler

The first known use of amplitude modulation was in 1921

See more words from the same year

Dictionary Entries Near amplitude modulation


amplitude modulation


See More Nearby Entries 

Statistics for amplitude modulation

Cite this Entry

“Amplitude modulation.” Dictionary, Merriam-Webster, Accessed 26 Sep. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon


Test Your Vocabulary

Dog Words Quiz

  • shiba puppy more or less demanding cuddles
  • Which of the following animals has a dog in its etymology?
True or False

Test your knowledge - and maybe learn something along the way.

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!