From the video lecture on noise analysis by Razavi here. Can anyone explain in more detail what Razavi said here? Why is the energy at a single frequency (zero bandwidth) zero?
Lets look at the energy carried by a woman's voice at 20 kHz. Can Isay that this dot represents the energy carried at 20 kHz? Answer:well not really because at a single frequency the energy that wecarry is zero because the bandwidth is zero.
