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In this series, I'm taking a detailed look at how to build an analog VCF from scratch. To keep it as beginnerfriendly as possible, I'm explaining what all the components do in detail.

This first part deals with passive first and second order high & low pass filters. If you want to follow along, here's a bill of materials:

1x 1M mono potentiometer
1x 1M stereo potentiometer
1x 47k resistor
2x 10 nF capacitor
2x jack socket

Chapters:
00:00 Intro
00:42 What's a filter?
03:50 Oscillation basics
06:16 Low pass analysis
10:57 Low pass build
12:49 Moving the cutoff point
14:33 High pass analysis
17:44 High pass build
18:05 Higher order filters
19:20 Second order low pass build
20:40 Outro