Rectangular Pulse Fourier Transform Visualization - Signal Processing Explained #3387472 (License: Personal Use)

The image displays two blue rectangular pulses in the time domain (left) and their respective Fourier transforms (right), plotted as real (purple) and imaginary (teal) parts. The top pair shows a centered pulse yielding a purely real, even-symmetric sinc function; the bottom pair shows a right-shifted pulse resulting in a complex transform with both real and imaginary components due to phase shift. This demonstrates how time-domain translation affects frequency-domain phase.

Used in educational or technical web pages on signal processing, Fourier analysis, or communications engineering to illustrate how time-domain features map to frequency-domain properties-especially symmetry, shift, and phase.