That voice in your GPS navigator, the virtual assistant in your smartphone, and the automated responses you get when you dial a company helpline number are not real voices. In other words, there is no big database of spoken words that the computer picks up and strings them together to create a sentence. They are generated on the fly by the computer, yet they sound so natural, so human, that more often than not they are completely indistinguishable from that of a real person.
Listen beautiful relax classics on our Youtube channel.
Source: amusingplanet.com