(2023-06-04, 08:14 AM)wongfeihung Wrote: That's why I was hoping waveforms would be useful in that regard.
Back to the waveforms... the titles that are likely or confirmed downmixes I find have a similar waveform appearance - they have a flat line on either side that they never stray beyond (if that makes any sense).
i have tons of examples of completely different tracks that look near identical in waveform but sound completely different. those differences are almost always visible in a spectrogram though. there's just not much info that can be discerned from only waveforms. if you level match the 4k 2.0 mix i bet it looks a lot more similar.
i'd just spend some time poking around spectrograms and comparing some titles. it's not that hard to understand and shows you more of what's going on than waveforms or frequency plots.
if you send me the tracks you have, i can take a look and maybe track down a few others to compare.