Deleted member 46664
The article you cite is 23 years old. A lot of progress has happened since 1999.What?? The dead time distortion of class D amplifiers is a direct equivalent of class B and AB crossover distortion. Why do you think you measured all of that high order distortion mess in the spectrum? And that horrible HF linearity?
For one thing the clock speeds on the outputs has more than doubled, now typically running 400khz. Another major change is post-filter feedback to correct output errors and not a little work on the "dead time" issue bringing it down to just a few nanoseconds.
Some of the best specifying amplifiers currently available are Class D.