This vocoder is fantastic! I CAN'T BELIEVE THIS TECHNOLOGY IS free.
Story: Music is just a hobby for me, and for some time now, I've been researching how to emulate Imogen Heap's "Hide and Seek" sound--that synchronized, harmonized sound that's popping up in LOTS of interesting tunes these days--namely Amber Run's "Haze", Jacob Collier's "Danny Boy" and "Hide and Seek" (from the Maida Vale session) and other improvisations. I kept searching for "harmonizers", and it seemed like I was going to have to drop a few hundred bucks in order to get that sound I was looking for, but then I found this! It's more than adequate for my purposes. I used the TAL-vocoder for a while--also free, also very good, but not quite what I was looking for. Now I'm spending all of my free time with June Lee's transcription of Collier's "Danny Boy" learning to play and sing it at the same time. Very fun.
This tool is impressive indeed, clear and very pleasant to the ears! :) I only have a problem with it, I don't know if it's my computer or the effect: it only works as a master effect, which seriously limits its use and makes working with it very complicated. Is it my set-up or is that a choice by the developer? It would be fantastic if it could be made to work as an insert effect, too...
The plugin really just provides the inputs and outputs, the rest is a matter of the routing capabilities of your DAW. I use Reaper, and it is really easy to set up, but it should not be a problem for most other DAWs. The routing is similar to compressor sidechaining.