Envelope follower?

[bifurcation]

I was thinking it'd be cool to have an envelope follower module pcb. It'd be a super cool option to add to any of the phasers, flangers, choruses, filters, etc...

Looking around the internet, I found these:

A simple Piaa one and a disturbingly simple-looking one from here:



A pretty complicated-looking one by Harry Bissell: muffwiggler.com/forum/viewtopic.php?p=1511975

Now that I think about it, I wonder if you could cut out the filter section of the Waddle Box or that DOD 440 Envelope Filter to adapt it to work as an envelope follower?

440 Schematics:

 

[Feral Feline]

BUMP
I vote for the Waddle Box (FX25), or CDXL Reissue (newer 440) as they only require a 13700 instead of an expensive vactrol as found in the CDXL Classic (old 440).

Or something else entirely...

 

[spi]

What's the difference between an envelope filter and an envelope follower?

 

[Bricksnbeatles]

What's the difference between an envelope filter and an envelope follower?

An envelope filter is a filter that is modulated by an envelope follower. An envelope follower can be used to modulate other effect types and other parameters though— for example you could have a tremolo pedal with an envelope follower controlling the depth, or maybe the rate. I think the op is asking for an envelope follower PCB that could be used either in its own box to be plugged into an expression pedal input, or put in a pedal build to replace one of the pots (such as the depth pot on a Caesar chorus!)

 

[giovanni]

I second this! I wanted to get a CopilotFX Autodialer for that purpose but I’d rather build one (or 10)!

 

[bifurcation]

I think the op is asking for an envelope follower PCB that could be used either in its own box to be plugged into an expression pedal input, or put in a pedal build to replace one of the pots (such as the depth pot on a Caesar chorus!)