Electro-Harmonix Talking Pedal (or any formant wah)

[bifurcation]

I could only find a partial circuit on DIYstompboxes:

..but there's a few other projects that seem similar:

Anderton's AntiWah



It's a bummer that all the circuits I find only use two filters. From what I've read, you get a better vocal sound with three filters.

I've been trying to find a datasheet on all the explicit ranges for each vowel sound, but so far no luck.

 

[Feral Feline]

Roland Funny Cat, I'd be all over that. Missed out on 3PDT.com's run. Would be great if it had all Moosapotamus' mods.

I thought I had more formant stuff, but can't find any of it. Not even the Funny Cat came up when I searched my HD.

Fuzzy memories of formant stuff possibly from Craig Anderton, MFOS, PAiA...


It might be easier to find a Eurorack Formant project to stompify.

 

[fig]

Could you use an auto-wah circuit, and control tone with an expression pedal?

I just finished an auto-wah (funkadelic man)...

 

[Betty Wont]

I've built both the EHX Bass Balls and Colorsound Dipthonizer and can heartily endorse them for this kind of sound.

 

[bifurcation]

Could you use an auto-wah circuit, and control tone with an expression pedal?

Not sure I totally understand.

I'm more used to playing with formant filters in the VST world or in Eurorack (as @Feral Feline mentioned,) so I'm used to the three peak visualization, with the middle filter sweeping, like here:

Although it looks like all these guitar pedal versions only use two filters, usually controlled by a ganged pot.