I made a working prototype to test user experience. It uses a combination of arduino and processing right now. From what I learnt with testing it with users was that the current iteration felt more like an interface and less like talking into a fan.
I am working on a hardware only solution for it.
This is what it sounds/looks like as of now - https://vimeo.com/109340924
I've taken the liberty to "embed" your video :) You can do this as well, by hitting enter after the video. I'm missing a Cher reference here