Vocoding and auto tune are two different things. I haven't used cool edit in years. When I used it there were no vocoders availible for it. What you are looking for is an auto tune effect.
Vocoding is when you use a carrier signal. (usually a saw wav synth) and a modulator signal.
(vocals) to mix the two signals together. The saw wav controls the vocal and and there you go. Access Virus Ti Vst Cracked.
For what you want. There is a free plugin called Gsnap that you can search for on google. You just use it as an insert effect on the track you want to apply it to. Strain Theory And Serial Killers. Look it up on youtube. But it's also very played. Download Uninstallwinclient Exe Landesk here. Best of luck.
YouTube - How to Get Auto Tune 4 Into Cool Edit Pro 2.0 (T-Pain settings also) (FREE AUTOTUNE).flv - Duration: 3:35. TRUEVLAD1 124,662 views.