2. Trigger sidechain compression with the kick drum
In many genres of music, the bass guitar and kick drum frequently occur simultaneously throughout a song, especially on downbeats. During those times, you have two instruments occupying the low-frequency area at the same time, though the bass often sustains for longer than the kick. To prevent them from fighting, one approach is to let the kick have the priority over the initial attack, then let the bass take over for the sustain. So, how do you achieve that?
The key for this trick is to have the kick drum make a compressor quickly attenuate the bass, but only when the kick is played. It sounds complicated, but it’s actually pretty straightforward. Refer to the image below and notice the following crucial elements to this configuration.
Now, each time the kick hits, the bass compressor will turn down the bass a little bit. This will allow the kick to peek through before letting the focus go back to the bass. Although the compressor’s parameters are fairly gentle, what you use is up to you!