Designing a simple ADSR(-ish) envelope generator from scratch

Support the channel:   / moritzklein   Build your own as a DIY kit: https://www.ericasynths.lv/edu-diy-eg... Working simulation on falstad: https://tinyurl.com/yz5z97jg In this video, I'll walk you through the process of designing a super simple ADSR(-ish) envelope generator from scratch. After VCO and VCF, this is one of the fundamental building blocks for any modular synthesizer. If you are a complete beginner and need help understanding some of the basic concepts, here's a list of links: Using a breadboard:    • Complete beginner's guide to using a bread...   Op amp fundamentals:    • DIY SYNTH VCF Part 2: Active Filters & Res...   Comparator close-up:    • Adding voltage controlled PWM to my VCO   Analog filtering basics:    • DIY SYNTH VCF Part 1: Analog Filtering Basics   And if you want to build along, here are the parts you'll need: 1x TL074 3x 100k resistor 1x 47k resistor 1x 10k resistor 1x 1k resistor 1x 100k linear mono potentiometer 2x 1M log mono potentiometer (linear works too, i'm using them in the video, log is better though cause it allows for finer control) 2x 1uF foil/film capacitor 5x 1N4148 diode Optional: 1x LED 1x 2k resistor Chapters: 00:00 Intro 02:44 Passive A/R Envelope 10:45 Active A/R Envelope 18:19 Faking an ADSR Envelope 26:50 Final Sound Demo & Outro