[Cocobolo Kid]

Celemony's Melodyne software is the most comprehensive audio to midi software. It is expensive, though, but it can do so much more, like pitch and tempo correction.

The versions of Melodyne that handle polyphonic audio are expensive, and limited to the editor and studio versions. I upgraded my way to the studio version at a significantly discounted price (holiday sales, etc. once you register a version with them).

I have not tried to use Melodyne to convert polyphonic audio to midi and yet, but I can give it a try with a song I want to learn and let you know how it does. As with any other full featured software, there may be a steep learning curve so this may take me some time. I am guessing this will depend heavily on the complexity of the song, the quality of the audio file and the skill level of the guitar player, especially at minimizing other noises and keeping uniform time/tempo. Once you have the midi file, most sheet music software should be able to import them. I use Sibelius which will do this.

Here are some links:
http://www.celemony.com/en/melodyne/what-is-melodyne
http://www.celemony.com/en/melodyne/...hnical-matters

Plugindiscounts.com offers discounts on a lot of recording software including Melodyne. You have to create a free account to see the pricing. I have purchased several times from them in the past.
https://plugindiscounts.com/?s=melod...t_type=product

I also have a Brian Moore midi electric guitar and Blue Chip midi guitar controller. I have tried using these in the past to generate sheet music and was not very successful. I found it much faster to just type the notes directly into Sibelius using the mouse and keyboard to make sheet music with guitar tab.

If you want to create guitar sheet music with tab, you may also want to give the open source (free) Power Tab 2.0 Editor a go (still in development but works fine on my Windows 8 PC):
https://github.com/powertab/powertab...-Here-at-last!

I hope some of this is helpful. Maybe the studio guys who know more will chime in.