Week 125: Multiband Sidechaining This is a fairly complex setup, but listen to the demo (see last section) and you’ll hear why I think it’s worth checking out…the effect is almost like using a vocoder to modulate one instrument with another, although in the context of this kind of modulation, the following approach gives you almost infinite possibilities. This technique is ideal for EDM (particularly Electro), but it’s something I’ve used in rock and pop as well.
The block diagram shows the basic concept.
Let’s say you want to modulate a guitar power chord with drums. The overview is you split the guitar into three frequency bands (Lo, Mid, and Hi), each followed by a Sonitus gate. Then you split the drums into three bands, and use each band to drive the sidechains on the gates that control the associated bands on the guitar. So when the kick hits, you hear the power chord’s low frequencies, a snare opens the midrange, the high-hats open the highs, etc.
CROSSING OVER Three Sonitus Multiband compressors (set for no compression, i.e., a ratio of 1:1) act as crossovers to split the guitar into low, mid, and high frequency bands.
The easiest way to do this is to send the guitar output to a Patch Point, and then insert three audio tracks whose inputs connect to the Patch Point. Insert a Multiband into one track’s FX Rack, and tune it to cover the guitar’s low frequencies. Solo that band, and bypass the rest.
Now Ctrl+Drag the low frequency multiband into the next track’s FX Rack. Leave the low band as is, but adjust the band splitters and tune it to the guitar’s midrange. Solo the midrange band and bypass the the others.
Next, Ctrl+Drag the midrange multiband into the next track’s FX Rack. Leave the low and midrange bands, and tune the high band to the guitar’s high frequencies. Solo the high band and bypass the rest. Finally, insert a Sonitus Gate after each multiband stage for the guitar.
We’ve now split the guitar into three bands. Send the drums to a new patch that goes to the input of its associated tracks. Because the Multiband compressors are already tuned, we can just Ctrl+Drag them into the drum’s Lo, Mid, and Hi band FX Racks. You may need to tune the multiband frequencies a little differently later on, but you’ll be close. Here's what all of this looks like in the Console.
TWEAKING TIME I find it easiest to tweak one band at a time. For example, mute all tracks except the drum audio track, the guitar audio track, and their low bands. Start playback, and adjust the guitar’s low band Gate to respond to the drums. Now here’s the “but wait, there’s more” part: you can tweak the Gate’s attack, hold, and release time to make the gating more percussive, softer (increase the attack a bit), or even try ducking and other tricks. Similarly, adjust the mid and high frequencies, and you’ll have a heckuva rhythmic guitar chord.
Also note that sometimes you might want to compress using the multiband compressors. I've been known to get lost in this kind of thing for hours...
THE DEMO To hear the demo, go to
craiganderton.com (and while you're there, check out the "Neo-" video album

), click on the
Demos tab, then click on
Week 125 Multiband Sidechaining in the playlist. The demo plays four measures of the guitar and drum audio by themselves, four measures of the gated guitar and the drum audio, and finally, just the gated guitar by itself while it fades out.
When you have an effect you like, save it as a Track Template for the next time you want to get seriously rhythmic—thanks to multiband sidechaining.
Happy holidays, everyone!