Digital filters to match DI piezo acoustic sounds to mic'd sounds

[Processaurus]

I was looking up Logic's Match EQ plugin, which is very interesting, it analyzes a sound with a spectrum analyzer, remembers it, and analyzes a second sound, and then creates a complex EQ curve to give the second sound the same spectrum as the first.  Suppose this is a similar idea to how Fishman's pedals that claim to make your piezo acoustic DI sound like it is being mic'd up?

http://www.soundonsound.com/sos/jun05/articles/logictech.htm

[GFR]

Check this project:

http://www.sidus.eng.br/vh/violaohibridoi.php