It’s all in the sound – this is especially true for cars from Audi. So-called “sound design” has become one more important component in vehicle development at Audi. You could call it the acoustic calling card of the brand with the four-ring logo. How an Audi should sound depends on the individual model and the customer's expectations. The latest examples of Audi’s active sound design are the Audi S4, Audi S5, Audi A8 V8 FSI, the new Audi TT TDI and TTRS, and the Audi R8 supercar.