PAM Waveform Generator
Standard: Pulse Amplitude Modulation (PAM)
50Hz
500Hz
Step 1: messagePlot
$m(t) = A_m\cos(2\pi f_m t)$
$m(t) = A_m\cos(2\pi f_m t)$
Step 2: Square Wave carrierPlot
$c(t) = A_c\frac{1+\operatorname{sgn}\left(\cos(2\pi f_c t)\right)}{2}$
$c(t) = A_c\frac{1+\operatorname{sgn}\left(\cos(2\pi f_c t)\right)}{2}$
Step 3: superimposed
$x(t) = [c(t) + m(t)]$
$x(t) = [c(t) + m(t)]$
Step 4: modulatedPlot
$s_{PAM}(t) = m(t)\,c(t)$
$s_{PAM}(t) = m(t)\,c(t)$