Krysalis,
There are a few harmonizer plugins out there. Some in vst, some in rtas & tdm, some in mac format....however, the sound quality is generally inferior to manual harmonizing and eventide which has spent years refining their hardware's algorithms. I've heard great results coming out of of TC units, good results from Digitech vocalist units. I believe there was a vst by Akai called
Decabuddy that could create a four part harmony or unison with decent results. There's also
Clone ensemble which can ve very cpu intensive but allows you to create many voices in unison. Arboretum I believe has a harmonizer. Eventide has
the Octavox in a TDM format I believe.
A studio I know uses Avox by Antares which I believe has doubler and choir effects in the package. These are unisons though and will not create chordal harmonies. From what I hear these tools sound great on vocals when used properly.
===Manually===
Sometimes the better way is to do it manually.
You can achieve that lil jon DOUBLED sound manually through the DAW by copying segments of the vocal you want "doubled", pasting it to a new track and detuning it a few cents flat or sharp and setting it back or forward a few milliseconds from perfect alignment with the original vocal. Create more instances of the double and Experiment with different values for placement and pitch to achieve better results. You could also use a randomiser and stereo imager on the doubles to widen the field and really make it sound like you're with a choir full of nothing but the lead vocalist.
manual HARMONIZING is widely employed in the industry and requires a talented vocalist. it's done simply by recording the different harmonic segments onto their own tracks, levelling, imaging then autotuning. They sound great and often more natural than a harmonizer automated on a single vocal track.
Hope this helped!
sincerely,
Owen
