Modulálás

Modulation is a technique used in various fields, including music, telecommunications, and mathematics, to vary one signal in response to another. In music, modulation refers to the change of key within a piece, allowing composers to create tension and interest. In telecommunications, modulation is the process of varying one or more properties of a periodic wave, called the carrier signal, with a modulating signal that typically contains information to be transmitted. This can be done in amplitude modulation (AM), frequency modulation (FM), or phase modulation (PM). In mathematics, modulation can refer to the process of multiplying a function by another function to alter its properties, such as frequency or amplitude. Modulation is a fundamental concept in signal processing and communication systems, enabling the transmission of information over various media.