Yes except for phase delay which is what was being shown in the video.
http://www.kennethkuhn.com/students/ee351/square_wave_testing.pdf This shows such results.
If you merely reduced low frequency content you get a drooped response between the ends of the square wave. If there is phase delay you get the sloping tops and bottoms. A coupling cap would cause reduced LF response and do so by delaying the lower frequencies. Which gives the sloping result. The initial edge will rise and the trailing edge troop.
But that doesn't mean LF is more prone to clipping. The higher leading edge is due to higher frequencies present, not lower ones. The lower ones that somewhat cancel some higher harmonics are delayed and you see that in the trailing edge where the same higher harmonics are more suppressed.
Ahh - you're right. I'd forgotten the impact of the phase shift. Sorry about that one (clearly, I need to go in search of more caffeine this morning).
Edited by cjl - 8/18/14 at 1:10pm