Fourier transform is a superbly important concept in signal processing. The mathematics of it as taught in schools can be quite complex. But what it is in practice, is remarkably simple. This video does a great job of showing that:
In a nutshell, the transform tells us what frequency components make up any signal. This allows us for example to see the spectrum of any signal, distortion, etc.
In a nutshell, the transform tells us what frequency components make up any signal. This allows us for example to see the spectrum of any signal, distortion, etc.