The ST Modular DUCK Eurorack Module is the perfect solution if you ever encounter issues with a crowded mix or want to achieve that highly sought-after 'sidechaining-sound' without using signal compression. This module features four potentiometers labeled AMOUNT, HOLD, RISE, and FALL, which control the way the audio signal is 'ducked'.
The AMOUNT potentiometer controls the overall effect of level reduction. You can smoothly fade out the ducking effect with this knob, which is useful in live performances. It also gives you control over how much of the inserted signal should be reduced in level.
The HOLD potentiometer determines the length of level reduction when the gate signal at the GATE input jack is high. Turning it to the left gives a 'plucky' type of level reduction.
The RISE potentiometer sets the amount of fade-in that is applied to level reduction. The more you turn the RISE to the right, the slower ducking is introduced when the gate is high. It's highly sensitive, so leaving it fully counter-clockwise gives you short duckings.
The FALL potentiometer sets the amount of time the signal needs to recover fully from level reduction. Along with RISE, you can create some slow fade-ins and fade-outs.
This module comes with two LEDs that indicate the signal level (left LED) and the level of signal reduction (right LED). It can also be controlled with a CV input. Any positive signal introduced into the CV input will reduce the level of a signal applied to the IN jack. If you use the CV jack, HOLD, RISE, and FALL will have no further effect.
The module comes in three PCB boards, including the front PCB panel, control PCB, and main PCB. It also features polarity protection to prevent any accidental damage.
Overall, the ST Modular DUCK Eurorack Module is an excellent option for those who want to achieve the 'sidechaining-sound', especially during live performances. The various parameters, sensitive knobs, LEDs, and CV input allow for complete control over how much and when audio signals are 'ducked' without any added compression.
Example Usage
If you're new to using sidechaining and want to achieve that classic 'ducking' sound, the ST Modular DUCK Eurorack module is a great place to start. You can simply plug in your trigger CV and adjust the amount control to decide how much your audio signal should be reduced in level. Try experimenting with the HOLD, RISE, and FALL controls to adjust the length of the ducking effect and create slow fade-outs or quick, responsive level reductions. If you want even more control, you can patch in a CV signal to the input jack for more precise adjustments.
An intermediate-level usage example of the ST Modular DUCK Eurorack module would be to use it to create a pumping effect on a synth bassline in a techno track. With the DUCK module in the sidechain, the kick drum's trigger CV could be patched into the GATE input jack and the synth bassline could be patched into the IN jack. Adjusting the AMOUNT potentiometer to the desired level of level reduction and setting the HOLD, RISE, and FALL potentiometers for the desired length and speed of the ducking effect. By doing so, the synth bassline will be reduced in volume whenever the kick drum hits, creating a pumping effect that is a hallmark of techno music. With the added flexibility of control over the length and speed of the effect, the ST Modular DUCK Eurorack module is a great tool for achieving the perfect sidechaining-sound for your productions.
Further Thoughts
One great way to use the ST Modular DUCK module is for achieving the classic sidechain effect on a synth pad or chord progression. By patching the gate input to a kick drum or other rhythmic element and adjusting the HOLD, RISE, and FALL controls to create a smooth ducking curve, you can add a pulse and groove to your track without compromising the integrity of the original sounds. The AMOUNT control is key here for dialing in the perfect amount of ducking, and if you want to get really creative, try modulating the CV input to create dynamic variations in the amount of ducking. With the ST Modular DUCK, the possibilities for sidechain sound sculpting are endless.