I’m also a complete novice at this stuff, so other folks please correct me on any of this. But after I record from any sampler, there’s some things that tend to crop up for me as I listen back, which I use post-processing to take care of…
Note: Most of these issues would be better taken care of by mixing more carefully “in the box,” but I’m impulsive.
Note, 2: I record everything “digital analog,” i.e. to a digital multitrack mixer with lots of physical routing, because I find remixing fun. But what I consider fun is not remotely the most efficient way to do this. I use a mix of Reaper’s free VSTs and outboard gear like pedals, but you could surely do it all with VSTs and save yourself a ton of time and disk space.
ISSUE 1. When I listen back to what I record from the DT, sometimes the EQ curve will have “humps” or “dips” that I didn’t notice as I was recording—bits of the spectrum that my monitors didn’t portray accurately, or got cancelled out by my study’s low ceiling, or ear fatigue, or whatever.
This is especially the case with too much low-frequency rumble or hats that are too prominent, which I often seem to catch after the fact.
So I often EQ the whole mix against a reference track (ideally multiple reference tracks) by loading the track onto one of the spare channels in my mixer and using Mute to go back and forth between them.
Then I mix this EQ’ed recording back in with the original recording to find a happy medium between them (aka “parallel processing”). That’s Mixdown 1.
ISSUE 2. The DT often sounds “livelier” when I record than when I listen back.
So, I’ve been experimenting with “cheap” compressors like the RNC and RNLA to bring a little of this “bounce” back into the mix, or to “tame” some bits that stand out too much in the mix.
I’ll usually run this signal through an EQ before it hits the compressor, to accentuate the parts of the signal that I want to the compressor to react to (like if there’s a HH that’s too loud, or there’s a hiss in one of the samples that I didn’t notice). And I use a cheap EQ pedal on the comp’s sidechain to do the HPF trick you can read about here.
Then, same as with EQ, I’ll usually mix the compressed signal, at a fairly low level, with the original signal (“parallel compression”) to a new mixdown track. That’s Mixdown 2
Then I listen back to all these, and mix together some combination of them, in parallel or in sequence, to find a sound that “feels right” against the reference track. It’s an iterative process with lots of iterating. But I find all the listening back helps me think through the composition, decide which takes are my favorites, etc.
Finally, all this doubling and tripling up of tracks tends to cause unwanted bass frequencies (“muck”) to pile up, so I EQ it one last time to make sure the mix isn’t too rumbly or muffled.
If needed I process the whole mix one final time through a “mastering chain” I’ve honed over time, which is based on this video by Kenny Gioia. Again, he’s using REAPER plugins, but you can apply the lessons from the video to any free VSTs you have available.
Issue 3: My mix is too quiet!
I tend to record my DT pretty quiet, so this whole process is also a way for me to bring up the levels on everything in a (hopefully!) careful and non-destructive way.