This gives you the iconic, hard-tuned "T-Pain" or "Cher" effect, as well as transparent correction.
Audition has a built-in effect that functions as a basic autotune: Navigate to Effects > Time and Pitch > Automatic Pitch Correction Subtle Correction : Set "Attack" to ~2 and "Sensitivity" between 110–120. Robotic Effect : Increase "Attack" to 10 and "Sensitivity" to 200. for any of these plugins? How to Install Plugins in Adobe Audition | Tutorial Autotune Vst For Adobe Audition 1.5