The Fourier transform is the primary tool for analyzing signals and signal-processing systems in the frequency domain, especially when signals are sampled or converted from discrete time to continuous time. In this lesson you will learn the definition of the Fourier transform and how to evaluate the corresponding integrals for several common signals. You will also build your intuition for the relationships between time- and frequency-domain descriptions of signals. Developing time- and frequency-domain intuition is an essential skill for the signal-processing practitioner.
