You want a robot voice, a daft-punk-funky-groovy voice effect, you want it you need it.
you need a vocoder ! For quick and dirty vocoderization, you can set up Wavosaur with some cool freeware plugins and get the job done.
voice without vocoder (not funky) :
voice with the vocoder !
To keep it simple, we’ll take free vocoder plugin with a built-in synth for the carrier. The two vocoder plugins listed here : http://www.wavosaur.com/vst/vocoder-plugins.php are freeware and work nice with Wavosaur :
Sonicism Vintage Vocoder DX
more info and download here : http://sourceforge.net/projects/vvocoder/files/Vintage%20Vocoder%20DXi/
note that the plugin is in DirectX format! but no problem, you can use it in Wavosaur, we’ll give all the process in this post.