Amplitude Modulation. Amplitude modulation (am) is a technique used in electronics most commonly for transmitting information via radio carrier wave. (simon haykin, 2003) it is.
Y = ammod(x,fc,fs) returns an amplitude modulated (am) signal y, given the input message signal x, where the carrier signal has frequency fc. The following techniques—amplitude modulation, frequency modulation, and phase modulation—are analog modulation techniques.