Exactly what I said, Raw Depth! Your graphic illustrates it nicely though.
I'd take issue with one thing in your post: calling it a problem. The harmonics and their phase relationship with the fundamental are simply a natural part of sound, not a problem to worry about. Indeed, as I said, I've seen it argued that some of the richest, nicest sounds have very non-symmetrical waveforms because the "richness" is lots of harmonics.
Why are waveforms uneven (from top to bottom)? This is spoken word. A countryman mic -> mixer -> 2 aux sends (L & R) -> CD recorder.
Only the spoken word is uneven. The music that was recorded has even waveforms.
And btw, it sounds fine. I'm just wondering what's going on.
View attachment 72086
Thanks,
Dwayne