Snap the filter
Pluck · Lesson 1 of 3 · PK1
The 1st step of the pluck track in PatchPond's subtractive synthesis curriculum. The snap is the filter envelope — and this lesson is where you meet filter envelope (env → cutoff) for the first time.
▸What you'll learn
A second robot — separate from the volume one — pushing the filter knob up and down for every note you play.
The filter envelope is a second ADSR — separate from the amplitude envelope — that moves the filter cutoff over time. With positive envelope amount, the cutoff opens up at attack and closes down through decay, sustain, release; with negative amount, it opens down and back up. Read more →
▸Built on
A dimmer switch for treble, with a side knob that lets the dimmer ring like a struck wine glass.
A low-pass filter lets low frequencies through and gradually cuts everything above a chosen cutoff frequency. Full definition →
First taught in BS3 Open the filter
Build this lesson live in the PatchPond studio. Web MIDI in, on-screen keyboard otherwise. The patch you make here loads back into iOS later on — same patch format.
Open in studio →▸In this track
Next PK2 Tune the decay →