amplitude modulation

noun

: 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

Word History

First Known Use

1921, in the meaning defined above

Kids Definition

amplitude modulation

noun

1

: changes in the amplitude of a radio carrier wave according to the strength of the signal

2

: a broadcasting system using amplitude modulation