Under Fourier Series Approximation:
(a) Which signal is easier to approximate, the "Rectangular Pulse" or "Triangle"? That is, if 10 coefficients are used, which signal is better approximated? Please explain why this is the case by observing the shape of the magnitude spectrum at the higher frequencies.
(b) How is the magnitude spectrum of "Noise" different from the other signals? Specifically, what do you notice about the "strength" of the higher frequencies in the magnitude spectrum?
Try the demo that is titled "Listen to Fourier Series". Did you learn anything interesting from this demo?
Some hints about how to proceed with this problem: PDF file or HTML file (both files have identical content).