Most of us may have the idea of disguising our voice once in a while for some purpose, especially small kids. Today, a wide range of voice changing tools are developed, both for kids and business purposes. Simple ones are masks for kids that can change voice to some other voices, and a small box used for mobile phones which can switch among 4-6 voices or so.

Digital voice changers make a great step further. Any voice or sound that goes through a computer can be changed dramatically thanks to the voice changing software, i.e. voice chat, IP phoning, computer recording, music playing, internet streaming,