Pitch/Detune Warble Pedal

[mountainsforclouds]

I was wondering if anyone knows of a pedal that I could build that sounds like you are subtly detuning your guitar with your whammy bar but you can adjust the amount and rate at which it does. A lot like the detune on the Zvex Lo-Fi Loop Junky. I've looked at most phasers, flangers, and choruses but they don't seem to fully "detune" with the warble. I don't know how possible it is, but would be cool to do.

[Canucker]

I have no clue on this but I agree that it would be cool. I'm totally gonna follow this thread!

[Scruffie]

Phasers/Chorus/Flanger... lift the dry signal and leave only the wet, vibrato!

With phaser you'll get all-pass phase modulation and chorus & flanger delay based modulation, delay based might be better for a sound like the Lo-Fi.

Then comes the LFO type used to produce the vibrato, sinusoidal being the preferred.

http://www.runoffgroove.com/tri-vibe.html

Try sticking that LFO on a Small Clone Chorus with the dry signal lifted.

[artifus]

^

also: http://snazzyfx.com/wow.html

pt2399 methinks... tim e wobbletron and idiot wah lfo'd may do a rough approximation...

[Strategy]

Search this forum for Clari(Not) Cubed, should be a tape-warbling party for you.

What makes the SnazzyFX Wow & Flutter special is its use of envelope follower to trigger the warble events. Basically, EF wired to delay time I suspect.

Strategy

[Jazznoise]

Not to be mean, but the best way to do that is to just move your whammy bar a smidgen. Like literaly press on it slightly, or grab the bridge and physically pull on it. Jazzmasters are great for this, but I did it for years on my Strat. It's just practice!

[merlinb]

This?

http://circuitworkshop.com/forum/index.php?topic=1136.msg8939#msg8939

[mountainsforclouds]

Perfect. I really like both of those options. The way that the Clari(Not) is modded seems to great thanks Strategy!

Also that Jenny Greenteeth looks amazing as well! Merlinb that looks awesome thanks. I am going to have to whip these guys up and try them out.

Jazznoise definitely good to do that too! But I like the idea of having other applications for it like for keyboards. Plus I'm kind of Tele guy.

[Jazznoise]

Jazznoise definitely good to do that too! But I like the idea of having other applications for it like for keyboards. Plus I'm kind of Tele guy.

I would be too if they had whammy bars. I've always liked the tone from a Tele. Nothing wrong with chorus or vibrato pedals, I use em. Sometimes with my whammy bar. And distortion. Chuck a ring modulator in there. Now I'll talkbox it! 

As for warble on keyboards - nothing beats the LFO assigned to the OSC pitch and the depth assigned to the mod wheel.

[Soup39]

Merlin what ever happened to the Jenny?  Anyone ever put together a pub layout?

[pinkjimiphoton]

magnavibe is easy and works well...google nocentelli's layout.

if you want pitch bend and warble, also check out the real clone theory, the one i built off cathexis's layout.

silky smooth analog bliss. kind of a bitch on vero, but nice..

[Strategy]

there are some envelope follower circuits floating around the forum, so you could easily glom one into any of these circuits, I think!

[mountainsforclouds]

Yeah the weird chorus that Jenny Greenteeth put together looks awesome. Does anyone know if there is a layout out there of it? I might try a crack at it but am still pretty fresh to making layouts from schematics.

[Paul Marossy]

Not to be mean, but the best way to do that is to just move your whammy bar a smidgen. Like literaly press on it slightly, or grab the bridge and physically pull on it. Jazzmasters are great for this, but I did it for years on my Strat. It's just practice!

Yeah, that's exactly what I do. Works nice when you have some delay and chorus going on too.

[merlinb]

Merlin what ever happened to the Jenny?  Anyone ever put together a pub layout?

I haven't built my own final version yet, but here is the PCB, layout, BOM etc:
https://dl.dropboxusercontent.com/u/57831278/JennyGreenteethBuildDoc.pdf
https://dl.dropboxusercontent.com/u/57831278/jennygreenteethpcb.bmp

[Soup39]

Thanks for making the doco available Merlin!

[mountainsforclouds]

Yeah thank you Merlin! I can't wait to try this guy out!

[Mark Hammer]

One of the things that made the original Boss CE-1 so desirable was the fact that it used a different LFO waveform for vibrato and chorus.  Vibrato would appear to sound more musical when modulated by something closer to sinusoidal, where chorus works just fine with triangle.

I know that I like the vibrato option on a Phase 90 (i.e., when the clean signal is lifted), but I gather the LFO there is triangular.  Note that one can get vibrato out of a phaser, and that the depth or degree of "pitch wobble" depends on how many phase-shift stages are employed, prior to the point where you tap the signal.  Two stages seems a little weak to my ears but it may suit some applications.  Six stages is a little too "boingy" for my tastes

I also wonder whether waveform shape makes a difference in the pleasingness of vibrato when there is ramp-up/down involved, as opposed to a static rate.

[artifus]

either side of the centre r/c frequency the sinusoidal wave would appear more triangular, would it not? or am i thinking of just phase shift oscillators?

[Mark Hammer]

I'm not sure what you mean.  What I'm referring to is how the sweep makes "the turnaround" at each extreme end of the sweep.  I'll also add that "ideal" modulation waveforms depend somewhat on the actual or intended modulation speed.  Vibrato is one of those things that isn't particularly perceptible at slow speeds (unless we're talking VERY severe pitch change), so the ideal modulation waveform is one that essentially "softens" the movement/shift at fast speeds.  A sinusoidal LFO decellerates as it approaches the extremes of sweep.  I think that qualifies as "softening".