hi everyone,
using kiku you can patch with your voice (english or japanese). it's available only for ubuntu / debian (32bit / 64bit) and it works with pulseaudio.
you can see it in action in this video: http://www.youtube.com/watch?v=pJMm4IUIIrQ
you can download it here: http://www.workinprogress.ca/kiku/download/
btw, i am using libpd to filter the voice (i/o on both audio and message).
cheers!