JCX, I would say no. But I've seen and posted harmonic structures that sounded harsh to me. There will be some moderate amount of lower order, a gap, then a rise of higher orders. That's probably accompanied by high IM, but I don't remember checking.
Let us remember that small amounts of higher order odd distortion have been noted as audible and annoying, even 75 years ago. Look at the Radiotron Designers Handbook to show this plainly. The reason is that higher order odd harmonics are dissident and as well, do not create IM products that are related to in tune musical notes. This is why 2'nd and 3'rd harmonic is almost impossible to hear in small quantities, and relatively non-offensive in relatively high quantities like 1% or even much more, especially just on musical peaks. This is again why analog recording, both reel to real and cassettes, as well as vinyl worked at all as acceptable musical mediums in the past and even today.
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John I'm still waiting for an example of even moderately competent, nominally linear circuit to toss out a isolated 7th or whatever
"the worst" I know how to do is have a deadband - not a linear circuit design
and even then you get all harmonics in the distortion - a flat profile
you can use too little feedback around a very nonlinear stage to get a weird "harmonic structure"
but all you have to do if the stage is still incrementally linear enough to use at all is to just use more feedback - see Putzeys, the Cordell Feedback thread for the "harmonic multiplication" math done to fine detail
it is empty noise telling no one anything to warn against isolated high order odd harmonics when competent circuits never produce isolated high odd harmonics
and incompetent circuits never produce any in isolation - there is always a hughe spray of other distortion harmonics
"the worst" I know how to do is have a deadband - not a linear circuit design
and even then you get all harmonics in the distortion - a flat profile
you can use too little feedback around a very nonlinear stage to get a weird "harmonic structure"
but all you have to do if the stage is still incrementally linear enough to use at all is to just use more feedback - see Putzeys, the Cordell Feedback thread for the "harmonic multiplication" math done to fine detail
it is empty noise telling no one anything to warn against isolated high order odd harmonics when competent circuits never produce isolated high odd harmonics
and incompetent circuits never produce any in isolation - there is always a hughe spray of other distortion harmonics
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