These signals can be linearly combined to form virtually any other signal, which is the basis of the Fourier series representation of periodic ... of their frequency contents, called their frequency ...

You’d think that mixing two signals would be adding them together. Turns out, adding in the frequency domain looks like multiplication in the time domain, so we actually want to multiply the two ...

In this chapter we review the basics of signals in the frequency domain. The frequency domain description is called the spectrum. The spectral analysis of signals using Fourier series and Fourier ...