1) Smearing of transients
2) Disproportionate favoring of the highest frequencies (assuming a sample rate of 44100hz, half of the FFT bins will be dedicated to the highest audible octave)
Just those two things alone are usually enough to make FFT-based processings have a sonic character that will be all over the processed sounds. Which could be just fine if one happens to want that kind of sound, but then, there’s no obvious way to get rid of that character…
I dunno, would looking into multiresolution-FFT be some solution to this? Or haven’t I just bumped into really good apps or plugins that do FFT-based processings?
This was just a random rant.