A key algorithm that quietly empowers and simplifies our electronics is the Fourier transform, which turns the graph of a signal varying in time into a graph that describes it in terms of its ...

Amid the chaos of revolutionary France, one man’s mathematical obsession gave way to a calculation that now underpins much of mathematics and physics. The calculation, called the Fourier transform, ...

This website by John Hopkins University covers many informative topics in the area of signal and systems. Each topic usually has some written tutorial as well as an interactive web applet. Some of the ...