I'd like to make sure that everyone understands that any harmonic distortion, ringing and overshoot at the switching part of the amp is going to be far above the switching speed.
Problems with the slew rate, switching speed,etc. here are not going to directly translate to audible issues the same way they might in a linear amp.
The shape of the square wave in a linear amp is totally audible. Class D is not going to translate the same way.
That's nice Eric, but all measurements preformed on all class d amplifiers say something that is sort of the opposite of what you are saying.
The theory is one thing, the reality says something completely different.
Explaining why what I mention is is important, is an act of teaching too may people who (currently) have no clue, how to fix things they have no idea are broken.