Minor note:
Instrumental voice is a fairly well-researched topic. There are no
known algorithms (at my last literature search 6 months ago) to accomplish
the encoding in real time (there are a number of decoding algos which
operate in real time, and a number of encoding algos that run in near-real
time).
Instrumental voice potentially allows some very interesting effects
such as shifting tone to make a man/woman change gender without sounding
squeaky (Interestingly this can be done by shifting a few parameters in GSM
encodings as well), shifting sample set to take on a different voice (though
it will not be the same voice as the original user, it will be closer than
your own sample set), etceteras.
Note again: you really need an adaptive system, not just a single
sample set... What happens when my dog barks or I want to share the music to
which I'm listening?
Enjoy all,
Mike
