viable way to build unique voices for those unable to speak is the brain child of speech scientist ruppel id. >> we are going to go back in that booth and have you say some vowels like you did last time like ahh. can you say that now? >> ahh. >> beautiful what we are doing at vocal id is we are taking a tiny sample of someone's voice voice. >> let's do it another time. let's do it another time. >> we are trying to make it sound like the person who the tiny sound was from. that's the scientific challenge. >> with thousands of english speaking donors from around the world, ruppel and jeff, the director of research and technology, are voices. >> can you kind of walk us through how a voice is made? >> yes. this is sarah here this is an example of what she gave us. >> hum. >> sarah's natural voice? >> that's her voice. when we speak, there is air in our lungs. we force it out. it goes through our trachea and hits the larynx and the vocal cords and those vibrate and from that produces a sound. it's shaped by your tongue and knows. she can't properly shape her vocal tract to produce each. we sep

at the same time, i don't know what kind of trip the ruppel can party is on, but the path it is on isnot for the white house. mitt romney tried it. there's not much white vote left in the electric couorate. america is getting browner and that is where they will have to get votes. host: crystal wright is the author of "con job." you can also share any of the videos on our website by clicking the facebook, twitter, or share icons. book tv, since 1998 all the top nonfiction authors and books all available at booktv.org. >> here is a look at some authors recently featured. nancy: discussed the challenges that women face in politics and the potential of a woman president. john you argued presidential power has gone beyond its limits and michael eric dyson explores how race has impacted the obama administration. guiding principles, ellen malcolm will recall her creation of emily's list. also coming up mother of columbine high school shooter don't people will discuss mental health and recall how she dealt with the tragedy. and this weekend professor and former chair mary frances jerry will e