Drum Track Processing Tips, Part 4: Ambience by Thai Long Ly

Drum Track Processing Tips, Part 4: Ambience by Thai Long Ly

You’ve now just downloaded your WAV’s from an online recording studio, imported the tracks into your session and pulled up the faders to zero. “Holy chasmic echo, Batman… that’s a lot of room!” Well, yes and no. Yes, that’s a lot of room if you solo the drums by themselves. Now start adding guitars, bass, keys, vocals, etc…

Too much room now? Or do you simply notice that the drums are sitting in a nice “space” in the mix without the need for artificial reverb? I generally like to record my room mics on the hot side, with plenty of level. Maybe more than you’ll actually use in the final mix… but it’s there if you need it. This gives you the most latitude when it comes time to create your atmosphere and space. Trust me, you’ll thank me in the end.

So, if you want more of a Beach Boys type thing or a 70’s dry drum sound, then back those faders down. If you want a modern R&B thing where the drum kit sounds more like samples, then simply mute the room mics altogether. Rock? Crank those room mics up from the beginning! How about this for a creative, fun use of room mics: sneak the room mics in during choruses only, or during big drum fills. This will add more presence and excitement without resorting to EQ or level changes. Again, suit to taste and don’t be afraid to experiment with processing.

Bear in mind that a healthy use of compression on room mics is pretty much standard practice for most rock productions. The aim is to get the compressor pumping in time with the track so that the drums start to sound exciting – like they’re about to explode out of the speakers.

But dig this: once you realize that a good drum track isn’t merely about punch and impact, that it should have depth and a real sense space as well, your productions will take on a whole new life. The quickest, most natural way to a cool sonic landscape is through the creative use of room mics in your mix.

Check out my other articles on drum processing on this site, covering topics such as use of compression and gating. In Part 5 equalization will be the focus. Until then, enjoy the process of applying what you have read.

Drum Track Processing, Part 1: Gating

Drum Track Processing Tips, Part 1: Gating -by Thai Long Ly


Now that you’ve received your raw drum tracks as WAV files from a session drummer, how should you proceed when it’s time to mix? In this series of tutorials, I will outline several processing concepts. Bear in mind that if you ask 100 Engineers how to mix a drum track, you’ll definitely receive 100 differing opinions on what’s right and what’s wrong. The bottom line is that if it sounds good, it is good. Whatever you have to do to convey the emotion of a performance is the right thing to do. I will also assume most of you will be using a DAW (Pro Tools, Logic, DP, Reaper, etc…) of some sort. With that said, lets get started with some tips on gating drum tracks.

Gating is essentially silencing sections of audio that have no pertinent information (aka bleed) so as to present a more cleanly defined track. For example, you may want to gate the tom tracks so that they are heard only when they are hit, as opposed to howling sympathetically whenever the snare is hit. If this annoys you, simply gate the toms. By silencing audio on the track when the toms aren’t being struck, you’ll produce a cleaner and tighter drum track overall. You can do this by using a noise gate as an insert (hardware or software plug-in) or by drawing down the volume via automation in a DAW or even muting whole sections in between actual hits. Each technique produces a different effect on the overall sound, so experiment with your drum tracks and see what works for you. Some guys will gate all drum tracks but the overheads, hi-hats and room mics. This can be great for R&B, Funk and Progressive Rock. Experimentation is key.

Conversely, some engineers feel that drums should ring freely and by gating you run the risk of killing the “vibe” of a drum kit being played by a real drummer in a real room. I won’t argue this point as it’s a valid one and the decision to gate drum tracks or not depends entirely on the type of material being performed and what you’re going for aesthetically. With that said, I generally wouldn’t gate anything for a traditional Jazz number or anything requiring a Bonham-esque vibe. Here, the ringing and overtones produced by having all the microphones wide open contribute to the overall presence of the kit and the air that surrounds each element can make for a huge sounding drum track. Although no approach is ideal for all circumstances, this is the certainly the most “natural” sounding approach. Think of gating as tight and dry while not gating as big and airy. Again… experiment and have fun.

Look for more of my drum track processing tutorials on this site. These tutorials will help you with compression, parallel compression, ambiance, and equalization.