The example I was thinking of is Western tuning. A440 (vs. A415) makes music sound washed-out, oversaturated. Vibrato is masking bad intonation with worse intonation. Equal temperament is detuning sweet intervals to make wolf intervals more palatable. Perhaps these things were a necessary evil before, but with computers, there is no excuse. At the Ellen Brooke baroque music project, we use just intonation. For a lay-friendly demo, see examples by University of Würzburg: https://justintonation.tp3.app/audio