Using the properties of the Fourier transform, we can simplify the solution:

where T is the duration of the pulse and sinc is the sinc function.

X(f) = ∫∞ -∞ x(t)e^{-j2πft}dt

Problem: Design a low-pass filter to remove high-frequency noise from a signal.

To illustrate the importance of mathematical methods and algorithms in signal processing, let's consider a few examples from a solution manual.

Problem: Find the Fourier transform of a rectangular pulse signal.