how can Midi make a guitar bigger?

[uglijimus]

I was reading this article:

http://www.ultimate-guitar.com/colum...tar_sound.html

and came to this part:

"One technique is to add a midi synth that plays along to the guitar part, either a square wave or sawtooth type, just to increase the size of the sound and fill up any frequencies that haven't been saturated. You've probably heard this technique a great many more times than you realise, as the aim here is usually to make the synth unnoticeable, but it's a common trick in industrial music, as well as in R&B/urban music, where it's usually added to the bass guitar to make it sound fatter (listen to Jamiroquai's Deeper Underground for a really unsubtle example). The key pointer here is not to overdo it; use the faders and EQ carefully to ensure that whilst it adds to the sound, it's not noticeable in itself unless you're using it as an effect."

I have no idea how to do this or what it means and my interest is piqued.

[Fergler]

You can use ReaTune to do this, it can send MIDI messages. Then place a synth after it. May result in some errors where playing is sloppy (or.. just normal. Various things can throw it off). If possible do this before distortion.

The effect is nice but imo it's far easier to just record a better tone.

[uglijimus]

Originally Posted by Fergler

You can use ReaTune to do this, it can send MIDI messages. Then place a synth after it. May result in some errors where playing is sloppy (or.. just normal. Various things can throw it off). If possible do this before distortion.

The effect is nice but imo it's far easier to just record a better tone.

are you talking about this:

https://www.youtube.com/watch?v=nK_Ui1phORg ??