FM Modulation

This visualization demonstrates Frequency Modulation (FM) with the following specifications:

Signal bandwidth: 4 kHz
Carrier frequency: 107.5 MHz (scaled down for visualization)

Generate a random signal and observe how FM modulation works! You can also listen to the signals.

About FM Modulation

In Frequency Modulation (FM), the frequency of the carrier wave is varied in accordance with the amplitude of the input signal. The equation for FM modulation is:

s(t) = A cos(2πf_ct + β sin(2πf_mt))

Where:

f_c is the carrier frequency (107.5 MHz, scaled down for visualization)
f_m is the message/modulating frequency
β is the modulation index

Note: For visualization and audio purposes, we've scaled down the carrier frequency. In a real FM system, the carrier would be much higher frequency compared to the message signal.