With its combination of electric drive and a comfortable, sophisticated interior, the Audi e-tron creates a new sense of mobility. Especially when driving in the city, it radiates an almost perfect sense of calm. The only sounds are from its tires and the gentle hum of the electric motors. The acoustic comfort is one of the strengths of all Audi models – the Audi e-tron raises this level even further and, as such, offers outstanding long-distance comfort.
Relaxed atmosphere: aeroacoustics and soundproofing
The body, which was specifically optimized in terms of vibration and noise comfort, provides the necessary foundation for the tranquil cabin. Those areas where forces are channeled into the body, particularly the connection of the axles, play an important role: Due to their high local rigidity they are resistant to excitations from the assemblies and the road.
To reduce structure-borne and air-borne noise effectively, the engineers in the Audi e-tron employ a mixture of absorbent and insulating materials. Design-related openings and cavities within the body are sealed and filled systematically. For instance, the wheel arches were lined with sound-absorbing material in the direct vicinity of the wheel. Relevant areas are also coated with a special material, thus reducing the vibration of the metal sheets. On the firewall, a complex multilayer structure dampens the sound penetration from the front-end to the interior. In the rear-end too, this kind of design of the new vehicle architecture with additional rear-axle drive is also taken into account. In the interior, specifically configured components, such as foam-backed carpets, ensure minimal noise in the Audi e-tron.
The second important factor for the relaxed atmosphere in the Audi e-tron is the highly developed aeroacoustics. As a rule, the wind noise becomes the overriding component in any car from a speed of 85 km/h (52.8 mph). With the Audi e-tron, however, intensive finishing touches on door seals, exterior mirrors and water-catching strips mean that the noise remains very low and barely reaches the occupants. The passengers can talk to each other comfortably even at high speeds. The windshield comes standard with double glazing. Audi also offers acoustic glazing for the side windows as an option.
3D sound like in a concert hall: Bang & Olufsen Sound System
The optional Bang & Olufsen 3D Premium Sound System lends the Audi e-tron additional acoustic quality. A small loudspeaker in each A-pillar reproduces the spatial dimension of height. The music unfolds exactly how it was recorded – without any artificial effects. Behind this technology is an algorithm that Audi developed in collaboration with the Fraunhofer Institute in Erlangen. It takes stereo or 5.1 recordings, computes the information for the third dimension and conditions it for the 3D loudspeakers.
At the heart of the Bang & Olufsen Premium Sound System is a highly efficient amplifier. It drives 16 loudspeakers with 705 watts. Some of them, for instance the 3D loudspeakers in the A-pillars and the surround loudspeakers in the D-pillars, feature neodymium magnets, which are very light and consequently produce minimal distortion. All of which creates an airy, highly resolved sound. The bass loudspeakers in the front doors are located in a separate housing; the surrounding paneling is thus excited less which, in turn, reduces resonance. That improves the sound quality and reduces the sound propagation outside the vehicle. The decoupling of the loudspeaker also provides a precise, voluminous bass.
Improving perception: technologically futuristic sound
In certain countries in North America and Asia, an artificial driving sound is superimposed on electric cars at low speed to satisfy legal requirements. Depending on the country, it must be clearly audible up to 32 or 20 km/h (19.9/12.4 mph) and gradually fades as speed increases. A small control unit generates the technologically futuristic sound, which a loudspeaker in the right wheel arch of the Audi e-tron emits, thus improving perception. When the car reverses, the sound level increases so it is clearly perceptible at the rear.
The equipment, data and prices specified in this document refer to the model range offered in Germany. Subject to change without notice; errors and omissions excepted.