Uploaded February 2023 | Updated September 2026, 2 weeks ago

---

I set out to make a tutorial about making a simple sequencer in Reaktor 6 Primary, and got way too long-winded, so this first part is just about making a low-pass gate (LPG).

A low-pass gate is a low-pass filter that is functioning as a VCA. When it isn't triggered, the filter's cutoff frequency is subaudio, not letting any audio pass. When triggered, though, the cutoff frequency goes up, letting all frequencies through. In analog, too, this motion of the cutoff frequency is performed by vactrols, adding a quick attack and release that some compare to the sound of bongo.

In this video, I make a digital LPG, talking through the best numbers for an effective result.

0:00 Let's make a sequencer!
0:54 Making our usual sawtooth synth
1:24 Explaining a low-pass gate (LPG)
2:06 Starting with a low-pass filter
2:35 AR envelope
3:01 Modifying the envelope
4:25 Multiplication
5:14 Subtraction
6:12 Switching to 1-pole filter
7:26 Resonance (not usual for an LPG)
8:21 Talking through the macro

Part 2, where I actually make the sequencer, here: youtu.be/DGbkv7QEy1U
Part 3 here: youtu.be/jFbuWjugNQ0

Reaktor 6 Beginner Tutorials: youtube.com/playlist?list=PL7w4cOVVxL6H9iE7Nuvo0vtQHDfXPzTVE
Reaktor 6 Intermediate Tutorials: youtube.com/playlist?list=PL7w4cOVVxL6HQ6JrYWso_B3gaLAHQheYG

LINKS:
Subscribe: youtube.com/user/SimonHutc/?sub_confirmation=1
Official Website - simonhutchinson.com
bandcamp: simonhutchinson.bandcamp.com/follow_me
Buy me a coffee: ko-fi.com/simonhutchinson
Buy my old gear (affiliate link): reverb.grsm.io/simon
Sign up for my mailing list: eepurl.com/hVs7bT

#SoundSynthesis #SoundDesign #ExperimentalMusic