Yes, you can definitely use the Vocoder in realtime.
You will need to either have a MIDI region with recorded MIDI note events triggering the Vocoder and Logic's transport playing or play the keyboard notes in realtime (no need for the transport to be running).
so are my steps, set up vocoder midi track, set up and activate audio for vocals, sidechain vocoder for audio track, mute audio, play midi keyboard and sing at same time??? I think these were the steps i tried before to no avail unless it was prerecorded audio?
i think i figured it out! Im not as dumb as i look! i need to sidechain input of audio, not audio channel, for that is for prerecorded audio right? sorry for your time, any tips or tricks li appreciate them
You should be able to listen to a record enabled track/channel strip and side chain that... is Logic's transport in playback mode? If so make sure that when the track is record enabled that from the
Options > Audio menu
both Punch on the fly and Auto-Input monitoring are not ticked.
Otherwise, sounds like you've got it all working well!
Do you have access to the TNT 2 tut? Vocoding is covered in:
Section 5: August
13. Evoc20 Synth Section
14. Evoc Analysis
15. Evoc Audio Preparation
16. Let's Vocode!
17. Note Just For Voice
Hope that helps!