How do I make speech sound to go all funny..

[theplanb]

Hi all
I'm trying to find a software (well I suppose it will be some kind of sound editing software) that will enable to distort speech sound so that you can't really identify the exact words the speak is saying but you can still hear the tone, pitch, accent, intonation and so on.

What I mean by this is.. say.. I have a sound file of someone speaking..
"My name is gumbo and I like eating honey".
A software can make the sound as
"m mm z mb nnn i mmk mmtng niii" or something like that..you know in rather funny way..

Is there a software (preferrably freeware or shareware?) that can do this?

BTW, I need this for language develpment..

 

[igowerf]

There's a freeware audio editing program called Audacity that supports different kinds of effects. You can probably create that effect by playing around with the different options.