I'm looking for how to replicate the vocal effect on Earth, Wind and Fire's "Let's Groove" track; also used by Roger and ZAPP. Sounds robotic... Listen to the attached sound clip.

you need a basic filter or efx

 You need an effect unit (or software plugin) called a vocoder. A demonstration by Dr. Presson:

Hey thats cool how you put the video in your message. How do you do that? I dont see how to do that.

bump

If you use the Quick Reply box at the bottom of each thread, you can only enter text. If you want to add videos or photos or attach files, use the standard form. There's link "... or use the standard form" next to the Submit button, as well as a "Post New Reply With Standard Form" link at the bottom of each thread.

Clicking that will load a text editor, with buttons for adding a YouTube video.

Hey Chris, did you get a vocoder?

Nah. The vintage stuff is *really* expensive. There's lots of vocoder modeling in software though. It's just something I've always wanted to mess with.