Quote: "Why doesn't the DC offset affect the frequency information? Because adding a constant value to all the samples just makes the whole scribble bigger, whi

Quote: "Why doesn't the DC offset affect the frequency information? Because adding a constant value to all the samples just makes the whole scribble bigger, which doesn't affect the midpoint." This is false. The amplitude of the terms above f = 0 are unchanged by the DC component, regardless of its magnitude. And the "midpoint" of the time spectrum is in fact shifted up or down by the DC component. So the DC term shows up in both the time and frequency representations, without affecting the amplitude of the other terms. Demonstration: Time domain, DC = 0: http://i.imgur.com/XFFJAy1.png http://i.imgur.com/XFFJAy1.png Time domain, DC = 1: http://i.imgur.com/WRtCD6q.png http://i.imgur.com/WRtCD6q.png Frequency domain, DC = 0: http://i.imgur.com/dfAxUlc.png http://i.imgur.com/dfAxUlc.png Frequency domain, DC = 1: http://i.imgur.com/73tc9UA.png http://i.imgur.com/73tc9UA.png In the fourth graph above, note the large DC term at the left. I decided not to read beyond the first major error.