Meaning of MODULATION in English

MODULATION

n.

In electronics, a technique for impressing information (voice, music, picture, or data) on a radio-frequency carrier wave by varying one or more characteristics of the wave in accordance with the signal.

There are various forms of modulation, each designed to alter a particular characteristic of the carrier wave. The most commonly altered characteristics include amplitude (see AM ), frequency (see FM ), phase , pulse sequence, and pulse duration.

Britannica Concise Encyclopedia.      Краткая энциклопедия Британика.