Fourier Transform
Fourier transforms is an algorithm that allows to break a signal into multiple signals of a single frequency. It’s extremely useful because it allows to check how much of a every frequency is present in a certain signal. With FT you loose information about time.
Short-Time Fourier Transform
Short-Time Fourier Transform applies Fourier Transform on small windows taken from the signal, which allows to maintain also some time information.
tags: signal-processing