So I learned Audacity had a vocoder in it the other day.
And I learned how to turn myself geth.
It’s pretty simple to set up with the vocoder tool, it turns out:
1. Set distance to 1.
2. Set vocoder bands to 75.
3. Set amplitude to 0 (unless your voice clip is quiet).
4. Set white noise to 15.
5. Set radar needles to 100.
6. Set radar needle frequency to 50.
Source of this data: http://www.youtube.com/watch?v=lqPLPIxRWXU