Originally Posted by
alphaGT
But it is easy to see on a scope that the signal coming out does not match the signal going in. Harmonic distortions, crossover distortions, etc., etc., and then there is Digital. You take the waveform and chop it into tens of thousands of pieces, and assign a number to it. Then taking those numbers, try to put it back together. And like dragging a rock around in a groove, it really is amazing that it works at all! And doesn’t sound like a squealing siren. So, you stitch the square waves back together and it looks like stair cases going up and down, so a filter smooths the edges off until it resembles an analog waveform. You’ve got a nice smooth waveform that sounds great! But, it is not an exact match of the signal that went in. Due to averaging, it’s a very close approximation, but not exact.
l