Problems with emulating a ducking/pumping effect

Hi guys,

I am having a hard time emulating sidechain compression with the Rytm, it would be great if somebody gave me some advice.

I want to get some chords/hihats/etc “pumping”, so that their volume decreases on every beat and increases towards the off beats. First, I tried to p-lock the amp volume, which is a very tedious process and didn’t sound that great.

The probably better way is to assign a lfo to the amp volume parameter. I set the speed to 32, the Multiplier to 16 and used the saw waveform. The start phase is set to 63, the trig mode to “free”. Besides some popping noises, it sounds allright. Though, if the same procedure is applied on some hihats, the lfo seems to start differently every time I press play. Does anybody know why the lfo does not restart after the pattern has been stopped and play is pressed again?

free mode maintains no links to the sequencer - check out the manual for the other lfo triggering modes (not as exhaustive as the OT choices) - but Trig, or p-locking the first in a pattern to Trig will help get the LFO phase back to a known state - one cycle of a periodic lfo takes 128 iirc so -64 / 2x or 16 / 8x etc - keeping the lfo broadly in line with the seq involves halving and quartering these numbers - adjust phase to taste, but the magic numbers are 32 64 etc

A cool trick I learned is that modulating the Overdrive with an LFO set to Ramp will give you a great simulation of pumping because overdrive adds tons of gain really quick so you can get a lot of variety.

So instead of trying to attenuate the signal to get pump, you actually add gain and then the LFO is ramping down the overdrive levels

:slight_smile: