How can http://youtube.com/watch?v=PVA48I2n-qQ, a tutorial to make an Inkling voice effect in the Mac version of Logic Pro X, be adapted to work with Audacity? I can’t completely figure out how to do so.
For pitch&formant shift you’ll need a plugin
e.g. Grallion2, or KeroVee (both are free).
The oscillating-resonance* can be done with another free plugin Tritik Krush.
The rest can be done with Audcaity’s native effects.
[* you could try Audcaity’s wah-wah effect, but I don’t think it oscillates fast enough for your purposes]