i use Voice Changer Software Gold VCS its simple and it works well for me cus i just need to make voices for mimic. you can do this with it:baby, girl, boy, old man, old woman, robot... voice). By adjusting the pitch and timbre level to make your voice deeper or thinner, male or female, here the link its super easy there is also a platinum ver. http://www.visual-mp3.com/review/12193.html