What should electric cars sound like | Renzo Vitale

Electric cars are extremely quiet, offering some welcome silence in our cities. But they also bring new dangers, since they can easily sneak up on unsuspecting pedestrians. What kind of sounds should they make to keep people safe? Get a preview of what the future may sound like as acoustic engineer and musician Renzo Vitale shows how he's composing a voice for electric cars. Check out more TED Talks: The TED Talks channel features the best talks and performances from the TED Conference,