Animal Crossing has an interesting style (see video here) of creating these meaningless phonemes to simulate conversation. They even have different sounds for different characters, thus giving them personality.
I would like to create these programmatically (at first in Max/MSP and then later port it to the browser in some way). I'm not entirely clear however on my options, how to do this, etc.
So far I have a list of tones, and with a simple envelope, every character is assigned a different tone based on its value, that tone then plays in one of the voices via a square wave.
How would I improve this method?