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

Example Sentences

Recent Examples on the Web Wi-Fi 7 will also increase throughput by up to 20 percent by moving from Wi-Fi 6/6E's 1,024 quadrature amplitude modulation (QAM) to 4,096 QAM while adding multi-link operation (MLO) and multi-resource unit puncturing. Scharon Harding, Ars Technica, 4 Aug. 2022 To start with the first point, one way to view Joseph’s counsel to Pharaoh is as a counsel of smoothing – of what engineers will call amplitude modulation and financiers call ‘collaring’ or ‘volatility’-buffering. Robert Hockett, Forbes, 5 June 2022 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.

Word History

First Known Use

1921, in the meaning defined above

Time Traveler
The first known use of amplitude modulation was in 1921

Dictionary Entries Near amplitude modulation

Cite this Entry

“Amplitude modulation.” Dictionary, Merriam-Webster, Accessed 28 Mar. 2023.

Kids Definition

amplitude modulation

: changes in the amplitude of a radio carrier wave according to the strength of the signal
: a broadcasting system using amplitude modulation
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