Yes the smooth function, of course. The smooth function, unlike a normal lowpass filter, will most probabyl keep phase intact, allowing you to mix/substract without phasing side effects.
This means, you can smooth the crap out of a sample, until you have it very dull. Then you can crossfade with the unsmoothened without side effects. This will allow you to have the effect in realtime, not having to go through the tedious process of filtering each single hit, you will be able to tune the rolls until they are perfect for you just by adjusting the volumes of each sample.
The renoise smoothing function seems to work just like this. Set a vel tracker to control gain of each sample in xfade manner, and you just need to sequence a row of notes with interpolated volume/velocity to get such rolls.
Note you should not eq/filter the samples individually before they are mixed together, or you get weird phasing issues. You can do of course eq them once both are mixed together. (edit) you can also eq the base sample before you split it into the dull/bright versions, the eqing will keep intact aside from the top freqs dampened by the process.
To brighten a sample (boost) with the smooth function have 3 copies. The first, spam click smooth to taste, then invert phase (the +/- button), copy, and mix paste (add) onto the second. You will only have highs then, you can copy and mix paste onto the third, making it brighter, and you can repeat the mix paste to make the effect stronger each time.
Cannot remember - did fast tracker 2 have a smoothing/average effect in sample editor? I remember doing the crossfade with smoothened samples in the 90s, but not on snare rolls, I did it with basses etc to "fake" modulations.
Edited by OopsIFly, 01 August 2017 - 20:33.