How hard would it be to build an envelope follower? - Shruthi - Mutable Instruments' community
MXR Envelope Filter PCB | Effect Pedal Kits
MXR Envelope Filter D.I.Y - YouTube
The FX25 was initially produced by DOD in the early 80s and is an OTA-based envelope filter/auto-wa… | Diy guitar pedal, Guitar distortion pedal, Guitar pedals
No longer available - DIY Envelope Filter and DIY Blend Pedal - BOTH NEED WORK | TalkBass.com
Experimentalists Anonymous DIY Archives
The Technology of Auto-Wahs / Envelope-Controlled Filters
No longer available - DIY Envelope Filter and DIY Blend Pedal - BOTH NEED WORK | TalkBass.com
Music Wrench: DIY Envelope Filter Pedal
The Technology of Auto-Wahs / Envelope-Controlled Filters