If so, can you please share back here.

And if you don't but know how I might be able to achieve that, I would Love to hear that too.

Thanks. And Peace.
-svanya

Got this worked out. See below.

Well, the first 4 couplets are octaves apart and the last two are unisons. You could pitch shift the e,a,d,g strings up an octave. You'd probably want to make sure the phases are just slightly apart too. The particulars of implementing that though could be varied.

To do this in real-time, I gotta think you'd need a six-channel pickup to make that happen. On a monophonic input, a granular delay that followed the pitch and then did some pitch-synchronous granular detuning might work somewhat convincingly. But polyphonically on a guitar, there would probably be a need for an extensive library of chord fingerings to analyze along with a good estimation of the likely fingering of monophonic lines given that there are multiple ways of playing the same thing on a guitar using different strings.

That would seriously be a cool effect, though.

@Maelstorm :

I think there may be a way to achieve a close approximation of this effect using a pitch-delay effect I found (originally called psycho-delay): drop/tune the pitch to one octave up and then make the delay time very short.

While not an exact copy of a 12-string it would be very close.

Thanks, for your input and suggestions. I think if I use the pitch-delay it might be able capture the variations going up and down the neck.

Will share here what I find out/make.

Peace.
-svanya

This is one of those times, we all wish we knew how melodyne worked.

pseudo12string.zip

Preface: though not a true 12-string (because I learned from @Monetus the last two strings of a 12-string are in unison not an octave) it does mimic one pretty well.

The abstraction is pretty simple:

It loadbangs all the parameters so the lines are as static as possible, ex. no feedback.

Then it splits the line into the original and a shifted+delayed one (using the abunch pitch-shifter and the DIY2 st-delay effect).

Shifts the original line 12 pitches up, then delays it 0 or one of 4 other possible times.

Mixes them from raw to shifted, recombines them, and then adds gain to compensate for the mix.

May you find some use for it.

Me: probably going to use it in my new stereo-split setup where I run each line (left and right) to their own guitar racks. So right, for instance will be shifted (or even a complete "12-string") and left will be original.

Peace and much merry-making abound.
-svanya

@Monetus: Thanks for all the input. Turned out well I think.

Why wouldn't you just build an octave-up distortion patch?

@ricky

Hi, Ricky: don't know enough (yet ) to know what an octave-up distortion is but I would Love to find out.

Can you please share one here so I can see it?

Thanks.

Ciao for now.
-svanya

If it weren't a learning curve, there would be nothing to ski down afterward.

p.s. I pretty much just took the direct approach. that is: basically what does a 12-string do? plays a higher note x amount of time after another note. (aka. pitch shift then delay. Also, I have serious trouble (besides the clipping part) comprehending what distortions do.

Peace and bliss thru us all,
s

Hello

i made this patch for you, it's still kind of crappy, but its the closest i got by now with the effects of my guitar effects suite, as you see, the 12-string guitar has 4 octaves and 2 unisons, but this unisons still sound, because this strings are tuned by humans, obviously, so it doesn't get a perfect pitch, and it sound like a little chorus effect, try it, i didn't had time to put any GUI, but by the way i know you'll understand what it's up to

Excuse my crappy English too,
Greener

12string.pd

@Greener

Thanks, for the patch. I really appreciate it. Will look into it when I have time and post back here. If I know myself (and I do a little bit ) I'll go ahead and add a gui for it when I do.
Thanks, again. And peace thru each and all of us.
-S
p.s. Your English is right on. So no-sweat on that front. Ciao for now.