Modify voice to be like the voice in the "avatar state"

Hey guys,

So for those of you that have seen the show, you might know what im talking about. For those of you that haven’t (though its highly entertaining[maybe if youre a younger kid like myself or a parent] and you should watch it!), Avatar: the last airbender is a Nickolodeon tv show. in the show theres a character, Aang, who is the “avatar” when he goes into a super powered state known as “the avatar state” his voice becomes a reverberation of all his past lives etcetc.

Here is a very short sample of the voice (0:05-0:07ish)
http://youtu.be/vR8zpzreT54?t=4s

If you need another sample of the sound I can try to dig one up, but basically Im trying to figure out if theres a way to recreate that voice for a project we have to do based on the tv show. Does anyone know where to begin? I played with a whole bunch of things in audacity but wasnt able to get the desired effect.

Thanks!!!

Could mix child’s voice with a pitch shifted version then vocode(r) with noise.

I used “autotalent” to pitch shift down …

http://web.mit.edu/tbaran/www/autotalent.html

http://www.kvraudio.com/db/autotalent_by_oli_larkin